Substation Control Equipment and technical building
Railway natural disaster and Foreign object intrusion monitoring system
Time and frequency synchronization system
Linear referecing inside spatial structure
An enclosed tubular carrier segment through which cables are pulled.
Excavation, the length of which greatly exceeds the width.
Energy steady device properties used in railway. The property set can be used by the predefined type SUSPENSION_ASSEMBLY of IfcElementAssembly.
Mobile network insures wireless communication by providing a secure platform for voice and data communication between infrastructure operators, including drivers, dispatchers, shunting team members and station controllers.
Properties of capacitors. The property set can be used by the predefined type CAPACITOR of IfcElectricFlowStorageDevice.
An L-shaped or similarly shaped accessory attached in a corner between elements to hold them together or to carry a secondary element.
Enumeration describing the relative position of a rail fastening to surrounding sleepers
The IfcAlignmentHorizontalSegmentTypeEnum indicates the type of a segment of a horizontal alignment segment (IfcAlignmentHorizontalSegment). Horizontal segments can be viewed from a geometric perspective and from a kinematic perspective. In recent times the kinematic perspective gained importance. The enumerations are detailed according to this development especially in modern track design. **Kinematic perspective on horizontal alignment segments** The central parameter of the kinematic perspective is lateral acceleration of the vehicle induced by change of direction while driving. In the horizontal layout this is the represented by the curvature of the segment. According to the curvature value the following categorization can be made: | Curvature | Segmenttype | Enumeration Values | |:----|:------------------|:----------| | 0 | straight line | LINE | | constant in the complete segment, <> 0 | Circular arc | CIRCULARARC | | variation along the segment | Transition with linear curvature variation | CLOTHOID, CUBIC | | variation along the segment | Transition with non-linear curvature variation | HELMERTCURVE, BLOSSCURVE, COSINECURVE, SINECURVE, VIENNESEBEND | **Geometric perspective on horizontal alignment segments** The traditional view is denoted by the geometric perspective in the context of the business terminology related IfcAlignment documentation. Before the availability of modern computers alignment design was performed using "traditional" drawing techniques. In the first phase of computerization this origin led to a representation in the x,y space first and a check of safety related properties in a second step. This can still be seen in regulations which have been put into effect 1980 or earlier. Of course designs which have been produced on basis of these regulations reflect the "good enough" attitude in the precision of the documentation. In a later phase an increasing importance of the kinematic perspective can be observed. Here precise control of the lateral acceleration (horizontal and cant layout) and vertical acceleration (vertical layout) became prevalent. Designers started to use high performance transition bends especially in high speed scenarios. In the kinematic perspective precise curvature fitting between consecutive segments needs to be better than in the "good enough" approach of traditional geometric perspective. Central terms are e.g. "jerks", "theoretical cant" or "cant deficiency". **Generic calculation of intrinsic x, y-coordinates for a given curvature** For each horizontal alignment segment with a known curvature formula a generic method to calculate segment intrinsic coordinates exists. !["Double integration"](../../figures/ifcalignmenthorizontalsegmenttypeenum-curvature2coord.png "Figure 1 — Double integration of curvature yielding intrinsic coordinates") >NOTE: While it is possible to apply the generic calculation also for trivial cases like LINE or CIRCULARARC it is much more efficient to use available formulas. **Word of warning** "Good enough" traditional designs have to be carefully checked before being included into a high precision 3D model. Intermediate corrections might be necessary. Fortunately the clothoid works very well with comparable documentation quality both in the classic geometric perspective and in the more recent kinematic perspective. Fortunately the vast majority of horizontal transition bends are designed and implemented as clothoids. **Recommendation** Check the relevant regulations for the network in question. Alignment designs as such are very stable over the lifetime of the road or track. Especially for old designs quality and precision of available documentation has to be checked very carefully. A clear understanding of limitations should be established before implementing automated data flows between high precision BIM environments and legacy documentation systems. This applies both to legacy, central databases and to legacy, individual documents. **Used Symbols and their meaning** | Symbol | meaning | Unit, value range | |:----|:------------------|:----------| | L | full length of segment | positive length L > 0 | | s | current position on segment | 0 < s < L | | ξ | = s / L (Greek "xi") standardised, dimensionless path length along the alignment / track centre line | 0 < ξ < 1 | | κ | (Greek "kappa") Curvature (inverse radius) of the alignment / track centre line in plan view (horizontal layout). | 1/radius | | κ1 | Curvature (inverse radius) at beginning of the alignment / track centre line in plan view (horizontal layout). | 1/radius | | h | height of the gravity center line used for calculation above the track centreline in the ground plan. | length | | ψ | (Greek "psi") Angle of cant (cross slope angle, bank angle) | rad | | φ | (Greek "phi") Directional angle (azimuth, bearing) | rad | | x(s) | variable longitudinal coordinate of the projection of the alignment / track centreline into the ground plan. | length | | y(s) | variable transverse coordinate of the projection of the alignment / track centreline into the ground plan. | length | **Terminology** **Intrinsic coordinate, intrinisc coordinate system of an alignment segment:** The origin of an intrinsic coordinate system is the start of the segment. The direction of the positive x-axis is the start direction of the segments.
Properties for history of controller values. HISTORY: Added in IFC4.
Properties common to an antenna. This property set is applied to a type or occurrence of _IfcCommunicationsAppliance_ with the predefined type ANTENNA.
Properties that are applicable for IfcSensor with predefined type FOREIGNOBJECTDETECTIONSENSOR.
A component that minimizes pump effects of the substructure.
Properties for the definitions of electrical cable segments.
_IfcValue_ is a select type for selecting between more specialised select types _IfcSimpleValue_, _IfcMeasureValue_ and _IfcDerivedMeasureValue_. SELECT * **IfcSimpleValue** A select type for basic defined types of simple data type. * **IfcMeasureValue** A select type for basic measure types of ISO 10303-41. * **IfcDerivedMeasureValue** A select type for derived measure types. > HISTORY&nbsp; New type in IFC2x.
_IfcAccelerationMeasure_ is a measure of acceleration. Usually measured in m/s2. Type: REAL > HISTORY&nbsp; New type in IFC2x.
Represents all wired networks that provide a data transmission channel using optical fiber cables, copper cables or both. It aggregates many technologies that are based on the multiplexing method.
Combination of at least two predefined types of unitary control element.
A device that senses or detects any obstacles. Examples are: detectors sensing objects falling from a bridge, rock-fall detectors, etc.
Properties of the fanout type of cable fitting.
A device that electrically actuates a control element.
Energy Head Span properties used in railway. The property set can be used by the predefined type SUSPENSION_ASSEMBLY of IfcElementAssembly.
A packet control unit performs some of the processing tasks of the base station controller for packet data. It is responsible for data packet, wireless channel management, error sending detection and automatic retransmission.
A cable fitting is a fitting that is placed at a junction, transition or termination in a cable system. > HISTORY&nbsp; New entity in IFC4 { .note} >
Enumeration of the different steady device configurations used in railway energy domain.
Enumeration of optical cable structures.
A device that prevents wearing of the rails throughout the flange of wheel to reduce noise emissions. It is often located at inner side of the outer rail in a curve or near turnouts (depends on function wearing or noise reduction).
Properties common to a transport equipment. This property set is applied to a type or occurrence of _IfcCommunicationsAppliance_ with predefined type TRANSPORTEQUIPMENT.
Properties related to welded connections.
_IfcPlanarForceMeasure_ is a measure of force on an area. Usually measured in N/m2. Type: REAL > HISTORY&nbsp; New type in IFC2x.
Properties of ticket vending machine. The property set can be used by _IfcElectricAppliance_ with PredefinedType VENDINGMACHINE.
Properties common to different types of anchor bolts.
Properties of sound absorption equipment used in railway. The property set can be used by the predefined type SOUNDABSORPTION of IfcDiscreteAccessory.
An impervious layer that could be used for e.g. roof covering (below tiling - that may be known as sarking etc.) or as a damp proof course membrane; also, waterproofing material on a bridge structure (typically on top of bridge slab).
Recess or chamber formed to permit access for inspection of substructure and services (definition modified from BS6100 221 4128).
An overhead contact line system above the upper limit of the train using an overhead contact line and a catenary system to supply current to traction units.
A system that allows communications between operators (e.g. switchtender, traffic regulator, operational agents, etc.) in operational centers and on the infrastructure site (e.g. railway, tunnel or road).
An _IfcText_ is an alphanumeric string of characters which is intended to be read and understood by a human being. It is for information purposes only. Type: STRING > NOTE&nbsp; Type adapted from **text** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC2x. > NOTE&nbsp; The set of characters that may appear in STRINGs exchanged in the exchange structure as defined in ISO 10303.21 is provided in ISO 10646. The encoding of characters in case of file-based exchange is defined in ISO 10303-21 and ISO 10303-28. Among else, these specifications define the encoding of 8-bit characters from ISO 8859-1...-16 and of 2-byte and 4-byte Unicode characters from ISO 10646. > Note that while _IfcText_ is not formally restricted in length, the size of a string in ISO 10303-21 conforming exchange files must not exceed 32767 octets after encoding and escaping.
A pair of conductors contained in a copper cable. The pair is always used together to form a circuit to transmit data by means of electric signals.
An _IfcAlignmentHorizontal_ is a linear reference projected onto the horizontal x/y plane. Points along a horizontal alignment have two coordinate values, x and y in the local Cartesian engineering system. The horizontal alignment is defined by segments that are connected end-to-start. The transition at the segment connection is not enforced to be tangential, if the \X2\201C\X0\tangential continuity\X2\201D\X0\ flag is set to false, otherwise a tangential continuity shall be preserved. Based on the context of the project, they are geo-referenced and convertible into Northing and Easting values. > NOTE&nbsp; Georeferencing is provided by _IfcMapConversion_ through the _IfcGeometricRepresentationContext_ defined at _IfcProject_.
Properties for on-site telecom control unit used for railway.
An electrical conductor is a single linear element with the specific purpose to lead electric current. The core of one lead is normally single wired or multiwired which are intertwined. According to IEC 60050: IEV 195-01-07, a conductor is a conductive part intended to carry a specified electric current.
A device used in circuits or power systems due to their inductance, acting as a component of electric storage device.
Enumeration of transport equipment assembly types.
Properties applicable to a symmetric pair cable, which is is a copper cable with a variable number of copper twisted symmetric pair conductors used to transmit data by means of electrical signals. this property set is applicable to type or occurence of _IfcCableSegment_ with predefined type CABLESEGMENT
A complex assembly made up of several components like blocking device, speed regulator, bias loaded inspector, track scale or controllable retarder.
Properties common to automaton appliances. This property set is applied to a type or occurrence of _IfcCommunicationsAppliance_ with predefined type of AUTOMATON.
A fixed device which, when placed on the rail, derails the wheels of a vehicle, and serves to protect a converging line. Note: definition from IEC 60050-821.
Contains cables, outlets, and/or switches for electrical power.
A blade is a machined rail, often of special section, but fixed and/or joined at the heel end to a rail to provide continuity of wheel support. The two switch rails in a set are the two inside rails. A switch rail is described as right or left hand according to whether it is part of a right hand or left hand half-set of switches. Note: definition from EN 13232-1-2004.
Properties of an overhead contact line system. The property set is associated with the predefined type OVERHEAD_CONTACT_LINE_SYSTEM of _IfcDistributionSystem_.
Properties common to a telecommand. This property set is applied to a type or occurrence of _IfcCommunicationsAppliance_ with predefined type TELECOMMAND.
Properties of tensioning equipment used in railway. The property set can be used by the predefined type TENSIONINGEQUIPMENT of IfcDiscreteAccessory.
An anti-arcing device is an equipment that prevents electric arc.
This enumeration defines the different types of mechanical fasteners. > HISTORY&nbsp; New Enumeration in IFC4.
Linear two-port device designed to transmit spectral components of the input quantity according to a specified law, generally in order to pass the components in certain frequency bands and to attenuate those in other bands
Enumeration describing elasticity of fastenings used in railway track to fix the rail to the sleeper.
Layer composed of broken stones under the sleepers.
Properties of footing. The property set can be used by the predefined type PAD_FOOTING of IfcFooting.
The _IfcCableFittingTypeEnum_ defines the range of different types of cable fitting that can be specified. > HISTORY&nbsp; New type in IFC4.
Properties of anchoring bar. The anchoring bar is used to connect stay from pole to the foundation.
A device that senses or measures the depth of snowfall.
An _IfcPositiveRatioMeasure_ is a ratio measure that is greater than zero. Type: _IfcRatioMeasure_ > NOTE&nbsp; Type adapted from **positive_ratio_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1.
Properties of Welded rail joint used in railway. The property set can be used by the predefined type WELD of IfcFastener.
A device that senses or detects heat. HISTORY: In IFC4, incorporates Fire Sensor. HeatSensorSetPoint changed to SetPointTemperature
A device that senses or detects the seismic wave and measures the seismic intensity in case of earthquake.
A device that prevents a sitting down of birds at electrically critical points and thus birds are protected against electrical shocks and disturbances by short circuit are avoided.
Properties of inductors. The property set can be used by the predefined type INDUCTOR of IfcElectricFlowStorageDevice.
Properties that are applicable for IfcSensor with predefined type RAINSENSOR.
Track panel properties used in railway. The property set can be used by the predefined type TRACK_PANEL of IfcElementAssembly.
Common properties for cable fittings. HISTORY: Added in IFC4.
A transport equipment is a network element responsible for providing functionality of transport, multiplexing, switching, management and supervision of transmission channels between different hosts. The data transport service uses three specific metrics: the bandwidth, the jitter, and the packet loss rate.
The covering is used to insulate an element for thermal or acoustic purposes.
Energy Cross Beam properties used in railway. The property set can be used by the predefined type RIGID_FRAME of IfcElementAssembly.
Properties common to the definition to all occurrences and types of IfcTrackElement with PredefinedType set to DERAILER.
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The main function of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. Combination instrument transformers are metering voltage.
Telecom Tower properties used in railway. The property set can be used by the predefined type MAST of IfcElementAssembly.
The _IfcURIReference_ provides for identifying a Uniform Resource Identifier (URI). A URI can be classified as a locator or a name or both, that is it may comprise a Uniform Resource Locator (URL) and/or a Uniform Resource Name (URN). * A Uniform Resource Locator, URL, is a string conforming to a standardized format, which refers to a resource on the internet (such as a document or an image) by its location. * A Uniform Resource Name, URN, is intended to serve as persistent, location-independent resource identifier and is designed to make it easy to map other namespaces (that share the properties of URNs) into URN-space. > NOTE&nbsp; See [RFC 3986](../../../bibliography.htm#RFC-3986) for definition of Uniform Resource Identifier. > HISTORY&nbsp; New defined datatype in IFC4.
Contains cables, outlets, and/or switches for communications use.
An _IfcTimeMeasure_ is the value of the duration of periods. Measured in seconds (s) or days (d) or other units of time. Type: REAL > NOTE&nbsp; Type adapted from **time_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1.
Properties of rail lubrication equipment. The property set can be used by the predefined type RAIL_LUBRICATION of IfcDiscreteAccessory.
The _IfcControllerTypeEnum_ defines the range of different types of controller that can be specified. > HISTORY&nbsp; New enumeration in IFC2.0. { .change-ifc2x4} > IFC4 CHANGE&nbsp; PROPORTIONALINTEGRAL and PROPORTIONALINTEGRALDERIVATIVE values deleted (property set enumeration now used). MULTIPOSITION added.
Chamber constructed on a drain, sewer or pipeline and with a removable cover, that permits the entry of a person.
Enumeration of data transmission unit usages.
Properties common to a modem. This property set is applied to a type or occurrence of _IfcCommunicationsAppliance_ with predefined type MODEM.
Base quantities that are common to the definition of all occurrences of cable segment.
A device that senses or detects airflow speed and direction.
A Sign type formed of a vertical post (possibly with some lettering or symbols) usually used to delimitate distance or the location of some equipment.
A circuit for delivering electrical power.
Enumeration of the different curved turnouts used in railway.
_IfcElectricVoltageMeasure_ is a measure of electromotive force. Usually measured in Volts (V, W/A). Type: REAL > HISTORY&nbsp; New type in IFC2.0.
Properties of a post. A post is a linear (usually vertical) member used to support something or to mark a point.
Properties of fiber segments. This property set is applicable to a type or occurence of _IfcCableSegment_ with predefined type FIBERSEGMENT.
Properties for indicating performance ratings for ticket processing of entry elements (e.g. turnstile, boom barrier).
Properties common to turnstiles or automatic gates used to control the flow of people or vehicles. This property set is applied to IfcDoor instances of predefined type TURNSTILE.
Properties in this property set are applicable to the transition type of cable fitting. Indicated that such transition is an optical adapter.
The IfcAlignmentVerticalSegmentTypeEnum indicates the type of a segment of a vertical alignment segment (IfcAlignmentVerticalSegment). | Vertical curvature | Segmenttype | Enumeration Values | |:----|:------------------|:----------| | No vertical curvature | constant gradient | CONSTANTGRADIENT | | Derivative of gradient with respect to horizontal projection of alignment is constant | Vertical curve, parabola | PARABOLICARC | | Derivative of vertical angle with respect to 3D arc length along the alignment is constant | Vertical curve, circular | CIRCULARARC | | Variation of vertical curvature is constant | Vertical curve, clothoid | CLOTHOID | >NOTE A vertical curve in track that starts or ends in canted switches and crossings can be of a higher order polynomial than a parabola. >NOTE chainage is longitudinal distance along the horizontal projection of the alignment (e.g. track centre line). >NOTE Definitions according to EN 13803/2017 (except CLOTHOID) **Used Symbols and their meaning** | Symbol | meaning | Unit, value range | |:----|:------------------|:----------| | L | full length of segment | positive length L > 0 | | s | current position on segment | 0 < s < L | | θ | (Greek "theta") Longitudinal slope angle (incline or decline) | rad | | g | gradient (math); g=tan(θ) | | | x(s) | variable longitudinal coordinate of the projection of the alignment / track centreline into the ground plan. | length | | y(s) | variable transverse coordinate of the projection of the alignment / track centreline into the ground plan. | length | | z(s) | Variable vertical coordinate of the projection of the track centreline in plan in a Cartesian coordinate system in the vertical direction. | length | | zc(s) | Ordinate of the vertical circular arc of measured away from the tangent line at position s. | length | | LV | length of vertical radius radius (inverse curvature) | length | | RV | radius (inverse curvature) of the track centreline at a point in the elevation diagram (longitudinal section) | length | | κV | (Greek "kappa") Vertical curvature | 1/radiusV | | ZG | Distance of the tangent intersection from the chord of the vertical circular arc | length | | ZM | Distance of the centre of the vertical circular arc to the tangent intersection point (stitch height) | length | | lT | Length of the tangents of the vertical circular arc | length | >NOTE Symbols according to EN 13803/2017 >NOTE gradient has a slightly different definition in civil engineering. "Gradient (Civ.Eng.) is the degree of slope, e.g. of a highway or a railway. US grade". >NOTE most railway track designs use the **small angle assumption**. That means θ=tan(θ)=gradient. **References to EN 13803/2017** EN 13803/2017 covers "Track alignment design parameters". As such it is not fully compatible with definitions for IFC Alignment. Therefore rail specific terms like track have been replaced with more general terms also applicable to road design. Referenced content of EN 13803/2017 "Table 2 - Elements for vertical alignment" has been modified as follows: **Vertical curve, parabola:** Derivative of gradient with respect to chainage is constant **Generalized:** Derivative of gradient with respect to horizontal projection of alignment is constant **Vertical curve, circular:** Derivative of vertical angle with respect to sloping length along the track is constant **Generalized:** Derivative of vertical angle with respect to 3D arc length along the alignment is constant EN13803 clause 3.5: **Chainage**: longitudinal distance along the horizontal projection of the track centre line.
A part connecting two rod or bars, such as reinforcement bars.
A structure built up of beams, columns, etc. with moment-resisting joints, such as gantry
Properties common to the definition of all occurrences of _IfcMobileTelecommunicationsAppliance_ and types of _IfcMobileTelecommunicationsApplianceType_ with the predefined type set to MASTERUNIT.
An _IfcRatioMeasure_ is the value of the relation between two physical quantities that are of the same kind. > NOTE&nbsp; Input given in percent is to be divided by 100% when stored as an _IfcRatioMeasure_. For example, 25% becomes 0.25. Type: REAL > NOTE&nbsp; Type adapted from **ratio_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1.
The value for the movement of electrically charged particles. Usually measured in Ampere (A). Type: REAL > NOTE&nbsp; Type adapted from **electric_current_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1.
A switch for alternatively closing and opening one or more electric circuits.
Trackwork ensuring the support and guidance of a vehicle along any given route among various diverging or intersecting tracks. Note: definition from NF EN 13232-1-2004.
Enumeration of input or output signal types.
Properties that are applicable to _IfcUnitaryControlElement_ with the predefined type set to CONTROLPANEL.
Enumeration of lubrication system types.
A sleeper is a track element that supports running rails, guard rails and check rails usually at right angles to its axis.
A device composed of pneumatic, mechanic or electric components causing the breaking of a train in case of emergency.
It is a database in charge of the management of mobile subscribers. It can be an authentication center (AuC) or a home location register (HLR).
An assembly of components which secures a rail to the supporting structure and retains it in the required position whilst permitting any necessary vertical, lateral and longitudinal movement. Note: definition from EN 13481-1.
A device used to remove snow from railways. E.g. electric heating device, gas heater
Properties of spring tensioner used in railway. The property set can be used by the predefined type TENSIONINGEQUIPMENT of IfcDiscreteAccessory.
Properties common to a rail joint of a railway track system. The property set can be used by the predefined type RAILJOINT of IfcMechanicalFastener.
An _IfcMassMeasure_ is the value of the amount of matter that a body contains. Usually measured in kilograms (kg) or grams (g). Type: REAL > NOTE&nbsp; Type adapted from **mass_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1.
A layer within a pavement structure that forms a paved area or road.
Log of electrical activity attached to an instance of IfcPerformanceHistory having an assigned IfcDistributionPort of type CABLE.
Enumeration of controller interface types.
Enumeration of transport equipment types.
An area measure is the value of the extent of a surface. Usually measured in square metre (m2). Type: REAL > NOTE&nbsp; Type adapted from **area_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1.
A linear bar element used to secure or stabilise a structure by resisting lateral and longitudinal loading through tension and or compression. usually formed by a solid bar.
An outlet used for connecting electrical devices requiring power.
Excavated chamber, the length of which typically exceeds the width.
An electrical contact placed between the rails (in the four-foot way) to provide warnings in the locomotive cab.
A fiber tube is semi-rigid hollow plastic tube with a very small radius that houses and protects a certain number of optical fiber segments. An optical cable segment may contain many fiber tubes.
A remote unit is a device used to amplify a base station signal.
A rooflike shelter of canvas or other material extending over a doorway, from the top of a window, over a deck, or similar, in order to provide protection, as from the sun.
An _IfcAlignmentCantSegment_ is an individual segment along _IfcAlignmentCant_. The cant alignment is defined by ordered segments that connect end-to-start. The points defined in a cant alignment segment are defined in a plane with x = distance along horizontal alignment and y = height relative to projected points in vertical alignment. The following cant segment types are defined: * Bloss transition - _IfcAlignmentCantSegmentTypeEnum_ .BLOSSCURVE. * Constant cant - _IfcAlignmentCantSegmentTypeEnum_ .CONSTANTCANT. * Cosine transition - _IfcAlignmentCantSegmentTypeEnum_ .COSINECURVE. * Helmert transition - _IfcAlignmentCantSegmentTypeEnum_ .HELMERTCURVE. * Linear transition - _IfcAlignmentCantSegmentTypeEnum_ .LINEARTRANSITION. * Sine transition - _IfcAlignmentCantSegmentTypeEnum_ SINECURVE * Viennese Bend (R) transition - _IfcAlignmentCantSegmentTypeEnum_ .VIENNESEBEND. For each cant segment, the following information is provided: * the start point, defined by distance along the horizontal alignment * the length (as horizontal length along the distance along (not the curve segment length)) * the start cant, given by the values of left cant and right cant, measured relatively to vertical alignment * the end cant, given by the values of left cant and right cant, measured from vertical alignment * the information of tangential continuity that can be used to check continuity of segments (e.g. invalid sudden change of cant or missing cant information if end point and starting point differ over a threshold).
_IfcThermalConductivityMeasure_ is a measure of thermal conductivity. Usually measured in Watt / m Kelvin. Type: REAL > HISTORY&nbsp; New type in IFC2x.
An assembly intends to support Overhead Contact Line System. It includes foundation, supporting elements and suspension assembly.
Properties common to the definition of all occurrences of _IfcMobileTelecommunicationsAppliance_ and types of _IfcMobileTelecommunicationsApplianceType_ with the predefined type set to E_UTRAN_NODE_B.
_IfcMaterialDefinition_ is a general supertype for all material related information items in IFC that have common material related properties that may include association of material with some shape parameters or assignments to identified parts of a component. There are three ways of assigning materials to a single component or multiple components; they are characterized as: * by layer - assigning a material to a layer with constant thickness * by profile - assigning a material to a profile with a constant of varying shape along an extrusion * by constituents - assigning a material to an identified part of a component shape; the identification is by a keyword rather than by a shape parameter Each instantiable subtype of _IfcMaterialDefinition_ may have material properties assigned, or have an external classification of its definition. It can be assigned to either a subtype of _IfcElement_, or a subtype of _IfcElementType_ by using the objectified relationship _IfcRelAssociatesMaterial_. > HISTORY\S\ New entity in IFC4
A device that manually actuates a control element.
A master unit is a component of a repeater for coupling base station signals.
Properties common to the definition of all occurrences of _IfcMobileTelecommunicationsAppliance_ and types of _IfcMobileTelecommunicationsApplianceType_ with the predefined type set to REMOTERADIOUNIT.
System of components and elements responsible for keeping or holding an element (a vessel, platform or set of catenary lines) in a desired position.
A signal type formed of an active device conveying information in a visual manner such as a light, cluster of lights, or mechanical moving shapes.
Chamber constructed on a drain, sewer or pipeline and with a removable cover, that permits visible inspection.
A frog is an arrangement ensuring the intersection of two opposite running edges of turnouts or diamond crossings and having one crossing vee and two wing rails. Note: definition from EN 13232-1-2004.
A fitting that ends a cable segment at a non-electrical element such as a grounding clamp attached to a pipe or to the ground.
A count measure is the value of a count of items. Type: NUMBER > NOTE&nbsp; Type adapted from **count_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1.
Properties in this property set are applicable for _IfcSwitchingDevice_ with PredefinedType _RELAY_.
A device that senses or detects wind speed and direction. HISTORY: Added in IFC4.
Properties common to IfcRail types and occurrences with PredefinedType set to STOCKRAIL.
A device that senses or collects rainfall related information.
A fixed installation at the end of the track which stops any vehicle movement (e.g., buffer stop, sand hump, etc.).
A framework of spaced cables or bars that are parallel to or cross each other.
Properties of fiber segment occurrences. This property set is applicable to occurences of _IfcCableSegment_ with predefined type FIBERSEGMENT.
The lineside electronic unit (LEU) is the interface between the balise and interlocking in railway. The LEU acquires the information from the interlocking, and sends the appropriate information to the balises in concordance with the lineside signalling (if available).
Properties in this property set are applicable for IfcSlab with PredefinedType TRACKSLAB, indicated that the slab is a cess or covering between rails.
Indicates the type of battery, disposable or rechargeable.
Automatically generated by IFC-ModelSearch.TranslatePredefinedType 2022-03-09
A sound power level measure is a measure of total radiated noise with units of decibels with a reference value of picowatts. Type: REAL > HISTORY&nbsp; Renamed in IFC4 (was IfcSoundPowerMeasure).
Fastening used in Overhead Contact System.
A longitudinal distribution system that supports contact wires, including catenary wire droppers and stich wires.
Enumeration of possible relative position values. The position of something is the place where it is in relation to other things.
Properties of point machine used in railway. The property set can be used by IfcActuator with predefined type set to ELECTRICACTUATOR, HYDRAULICACTUATOR, HANDOPERATEDACTUATOR, or PNEUMATICACTUATOR, indicated that such actuator is a point machine that can switch and lock the track turnout.
An element that transfers the load of a single column (possibly two) to the ground.
Common energy suspension properties used in railway. The property set can be used by the predefined type SUSPENSION_ASSEMBLY of IfcElementAssembly.
Energy supporting assembly properties used in railway. The property set can be used by the predefined type SUPPORTING_ASSEMBLY of IfcElementAssembly.
_IfcPowerMeasure_ is a measure of power required or used. Usually measured in Watts (W, J/s). Type: REAL > HISTORY&nbsp; New type in IFC2.0.
The _IfcCableCarrierFittingTypeEnum_ defines the range of different types of cable carrier fitting that can be specified. > HISTORY&nbsp; New type in IFC2x2.
Properties of battery rechargers. The property set can be used by the predefined type RECHARGER of IfcElectricFlowStorageDevice.
Properties of conductors used as feeder line. This property set is applicable to a type or occurence of _IfcCableSegment_ with predefined type CONDUCTORSEGMENT.
A device for storing energy in chemical form so that it can be released as electrical energy.
A telephony exchange is a device that ensures the routing of telephone calls and communications.
A cable segment is a flow segment used to carry electrical power, data, or telecommunications signals. A cable segment is used to typically join two sections of an electrical network or a network of components carrying the electrical service. > HISTORY&nbsp; New entity in IFC4 { .note} >
Properties of an insulator. The property set can be used by the predefined type INSULATOR of IfcDiscreteAccessory.
A device that senses or detects the passage of a wheel.
A rail is a special section bar (usually of steel) ensuring the guidance of the wheel of a rolling stock or other heavy machineries. In railway, two rails are combined to form a track.
Electrical cable with a specific purpose to lead electric current within a circuit or any other electric construction. Includes all types of electric cables, mainly several electrical segments wrapped together, e.g. cable, tube, busbar. Note that the number of conductors within a cable is determined by an aggregation mechanism that aggregates the conductors within the cable. A single-core cable is defined in IEV 461-06-02 as being ''a cable having only one core''; a multiconductor cable is defined in IEV 461-06-03 as b eing ''a cable having more than one conductor, some of which may be uninsulated''; a mulicore cable is defined in IEV 461-06-04 as being ''a cable having more than one core''.
Properties about cable connectors. This property set is applicable to a type or occurence of _IfcCableSegment_, indicated that the cable segment has one or two connectors affiliated.
This enumeration defines the different types of alignments.
A track elastic cushion is a kind of layer set on grooved sides of a concrete base, which is used for mitigating the impact of longitudinal and lateral load on track structures. A track elastic cushion shall only appear in ballastless track structures.
Space formed in the ground for the passage of pipes, cables, ducts.
Indicates derailer information over time for operation management.
The properties defined by this _IfcPropertyTemplate_ are of type _IfcQuantityLength_.
The mobile switching centre (MSC) constitutes the interface between the radio system and the fixed networks. It is an exchange which performs all the switching and signalling functions for mobile station located in a geographical area designated as the MSC area. It consists of a MSC server and a media gateway.
_IfcMassPerLengthMeasure_ is a measure for mass per length. For example for rolled steel profiles the weight of an imaginary beam is usually expressed by kg/m length for cost calculation and structural analysis purposes. Type: REAL > HISTORY&nbsp; New type in IFC2x2.
An _IfcPositiveLengthMeasure_ is a length measure that is greater than zero. Type: _IfcLengthMeasure_ > NOTE&nbsp; Type adapted from **positive_length_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1.
A weld seam between parts of metallic material or other suitable materials.
A rail mechanical equipment is a mechnical equipment installed at railside, like blocking device, speed regulator, bias loaded inspector, track scale or controllable retarder. .
Properties that are applicable for IfcSensor with predefined type SNOWDEPTHSENSOR.
Enumeration of the different expansion directions used in railway track.
Properties of a bracket. The property set can be used by the predefined type BRACKET of IfcDiscreteAccessory.
Properties in this property set are applicable for IfcSlab with PredefinedType BASESLAB, indicated that the base slab is a track base slab.
A system sending command to control and monitor the switches and circuit breakers or systems directly or not connected (e.g. via wires) within the traction power system remotely.
A track circuit is an electric circuit of which the rails of a track section form a part, with usually a source of current connected at one end and a detection device at the other end for detecting whether this track section is clear or occupied by a vehicle. In a continuous signalling system, the track circuit can be used to transmit information between the ground and the train. Note: definition from IEC 60050-82.
NOTE Definition from ISO6707-1: non-load bearing vertical construction, usually lightweight, which bounds or subdivides an external area.
Properties of subrack used in railway telecom. The property set can be used by the predefined type SUBRACK of IfcSystemFurnitureElement
A (typically) open carrier segment onto which cables are laid.
A distribution frame is used to interconnect and manage wiring between active equipment and subscriber. It might be composed of multiple distribution boards and other components.
List the different mechanical Stress. In continuum mechanics, stress is a physical quantity that expresses the internal forces that neighbouring particles of a continuous material exert on each other
_IfcPressureMeasure_ is a measure of the quantity of a medium acting on a unit area. Usually measured in Pascals (Pa, N/m2). Type: REAL > HISTORY&nbsp; New type in IFC2.0.
An electric conductor of an overhead contact line with which the current collectors make contact. Note: definition from IEC60050 811-33-15.
A light fixture that is considered to have negligible area and that emit light with approximately equal intensity in all directions. A light fixture containing a tungsten, halogen or similar bulb is an example of a point source.
Enumeration of antenna radiation patterns.
A non-negative length measure is a length measure that is greater than or equal to zero. Type: _IfcLengthMeasure_ > HISTORY&nbsp; New type in IFC4.
A mechanical assembly with e.g. fishplates to join two rail ends with optional functions (insulation or expansion capacity).
Individual segment along the _IfcAlignmentHorizontal_, being defined in the x/y coordinate space. Each single horizontal alignment segment has an optional associated segment definition. The placement of _IfcAlignmentHorizontalSegment_ and the _IfcCurveSegment_ _StartPlacement_ correspond to each other. The following information can be calculated (and is therefore not exchanged explicitly to avoid redundancy and inconsistencies) * the end point (from start point, direction, segment length and curve parameter) * the start distance along (from the end distance along of the previous segment, or the start distance along of the horizontal alignment (if it is the first segment) * the end distance along (from the start distance and the segment length) * the end direction (from the curve parameter, the start direction and the segment length) * the point of intersection (from the start direction and the end direction) The following checks can be done to validate the correct exchange: * continuity \X2\2013\X0\ does the calculated end point of the previous segment matches with the provided start point of this segment * tangential continuity \X2\2013\X0\ does the calculated end direction of the previous segment matches with the provided start direction of this segment
Common properties for cable carrier fittings. HISTORY: Added in IFC4.
Enumeration of the different cantilever assemblies used in railway energy domain.
Properties for history and operating schedules of thermostats. HISTORY: Added in IFC4.
Wireless connection to communication appliances for distribution of data or communication.
A control element at which devices that control or monitor the operation of a site, building or part of a building are located
A self-acting artificial device, the behaviour of which is governed either in a stepwise manner by given decision rules or continuously in time by defined relationships, while the output variables of which are created from its input and state variables. Note: definition from IEC 60050-351-42-32.
Properties common to the definition of all occurrences of _IfcMobileTelecommunicationsAppliance_ and types of _IfcMobileTelecommunicationsApplianceType_ with the predefined type set to BASEBANDUNIT.
Properties of stitch wires. This property set is applicable to a type or occurence of _IfcCableSegment_ with predefined type STICHWIRE.
An optical network unit is a kind of optical transmission network connection equipment which is installed at user side.
A device that reads and displays the value of multiple properties of a system at a point, or displays the difference in the value of a property between two points.
The properties defined by this _IfcPropertyTemplate_ are of type _IfcQuantityWeight_.
A base transceiver station (BTS) is a network component which serves one cell. It completes the conversion between base station controller and wireless channel, and realizes the wireless transmission and related control functions between base station controller and mobile switching through the air interface.
Enumeration describing the vending machine user interface.
Enumeration of the different functions a cable is used for.
Common properties of clamps and fittings used in railway overhead contact system (OCS).
Anti arcing device properties used in energy domain. The property set can be used by the predefined type ANTI_ARCING_DEVICE of IfcProtectiveDevice.
_IfcInteger_ is a defined type of simple data type Integer. It is required since a select type (_IfcSimpleValue_) cannot include directly simple types in its select list. In principle, the domain of _IfcInteger_ (being an Integer) is all integer numbers. Here the number of bits used for the _IfcInteger_ representation is unconstrained, but in practice it is implementation specific. Type: INTEGER > HISTORY&nbsp; New type in IFC1.5.1.
A mechanical fasteners connecting building elements or parts mechanically. A single instance of this class may represent one or many of actual mechanical fasteners, for example an array of bolts or a row of nails. > HISTORY&nbsp; New entity in IFC2x2 { .change-ifc2x4} > IFC4 CHANGE&nbsp; Supertype changed from _IfcFastener_ to _IfcElementComponent_. Attribute _PredefinedType_ added. Attributes _NominalDiameter_ and _NominalLength_ deprecated.
A guard rail is a rail that limits risk of train derailment, normally not loaded.
A special bolt which is anchored into conrete, stone, or brickwork.
The gateway GPRS support node is a component of the GPRS core network that extends the GSM to allow packet switching functionalities. This component is responsible for the internetworking between the GPRS network and external packet switched networks (e.g. the internet).
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The main function of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. Combination instrument transformers are metering current.
An (typically) open carrier segment onto which cables are laid. HISTORY: IFC4 - NominalLength deleted. To be handled as a quantity measure
A device that is used to fix or adjust the parameter of electric energy, such as voltage loss, power factor and so on.
_IfcFrequencyMeasure_ is a measure of the number of times that an item vibrates in unit time. Usually measured in cycles/s or Hertz (Hz). Type: REAL > HISTORY&nbsp; New type in IFC2.0.
A check rail is a rail laid close to the gauge face of a running rail which takes part in lateral guidance of the wheel and prevents derailment in small radius curved track and switches and crossings. Note: definition from EN 13481-1.
Properties of earthing conductors used in overhead contact line systems. This property set is applicable to a type or occurence of _IfcCableSegment_ with predefined type CONDUCTORSEGMENT.
Properties common to the definition to all occurrences of IfcTrackElement with PredefinedType set to SLEEPER.
An optical cable segment is a cable segment that contains a variable number of optical fiber segments.
Properties common to IfcRail types and occurrences with PredefinedType set to BLADE.
A transformer that changes different quantities between circuits.
An assembly comprising a conductor with its own insulation (and screens if any)
This property set has properties that are applicable to cable segment and optical cable segment, indicated that the cable is a patch cord cable, which is fitted with connectors at both ends, allowing it to be rapidly and conveniently connected to other cables or to distribution panels.
Properties of the exit type of cable fitting which ends a cable segment at a non-electric element.
Properties that are applicable for IfcSensor with predefined type WHEELSENSOR, indicated that the wheel sensor is a axle counting equipment.
A device that senses or detects the position of a blade of a turnout.
An enclosed tubular carrier segment through which cables are pulled. HISTORY: IFC4 - NominalLength deleted. To be handled as a quantity measure.
A stock rail is a fixed machined rail, ensuring the continuity on the main or diverging track with the switch in the open position. The machined part of the stock rail supports its switch rail in the closed position, giving continuity of line through this switch rail. The two stock rails in a set of switches are the two outside rails. A stock rail is described as right or left hand according to whether it is part of a right hand or left hand half-set of switches. Note: definition from EN 13232-1-2004.
Properties used for wired communication port.
A transition component is a minor active device that converts electric signals to optical signals at the sender, and converts optical signals to electric signals at the receiver.
A catenary wire is a longitudinal wire supporting the grooved contact wires either directly or indirectly. Note: definition from UIC 719-1.
An E-utran nodel B is a logical network component which serves one or more E-utran cells. It is the hardware connected to the evolved packet core (EPC), more specifically to the mobility management entity (MME) , which communicates directly with user equipment in wireless way.
Properties of contact wires used in overhead contact line systems. This property set is applicable to a type or occurence of _IfcCableSegment_ with predefined type CONTACTWIRESEGMENT.
Enumeration describing the types of turnstiles
Enumeration of the different blades orientations used in railway domain.
_IfcAngularVelocityMeasure_ is a measure of the velocity of a body measured in terms of angle subtended per unit time. Usually measured in radians/s. Type: REAL > HISTORY&nbsp; New type in IFC2.0.
An appliance that stores and vends goods including food, drink, tickets, and goods of various types.
Properties that are applicable to _IfcUnitaryControlElement_ with the predefined type set to BASESTATIONCONTROLLER.
A modem (from modulator-demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information.
A lock is a mechanical or electronic fastening device that is released either by a physical object (e.g., key, fingerprint, RFID card, security token etc.), by supplying secret information (e.g., number permutation, password), or by a combination thereof.
A boom barrier (also known as a boom gate) is a bar, or pole pivoted to allow the boom to block vehicular or pedestrian access through a controlled point.
The property set can be used by the predefined type DATA of IfcJunctionBox.
Properties common to a data transmission unit. This property set is applied to a type or occurrence of _IfcCommunicationsAppliance_ with predefined type MODEM.
A transducer designed to transmit or receive electromagnetic waves.
Properties of a sliding chair. The property set can be used by the predefined type SLIDINGCHAIR of IfcDiscreteAccessory.
Adjustment switch panel properties used in railway. The property set can be used by the predefined type DILATATION_PANEL of IfcElementAssembly.
For the purposes of IFC the English term "alignment" defines three essentially separate but closely interconnected concepts. 1. defintion of a reference system for linear positioning 2. safeguarding and optimization of the movement of vehicles - kinematic perspective 3. geometric construction of roads, railway tracks or other linear infrastructure **Reference system for linear positioning** An alignment is used to define a reference system to position elements mainly for linear construction works, such as roads, rails, bridges, and others. The relative positioning along the alignment is defined by the linear referencing methodology. > NOTE&nbsp; See ISO 19148 Geographic information &ndash; Linear referencing for general definitions about linear referencing. **Kinematic perspective** In the kinematic perspective focus is on the safe and optimized movement of a vehicle under the constraints induced by changes in the direction of the horizontal and the vertical layout. **Geometric perspective** In the geometric perspective the focus is on the proper placement of horizontal and vertical segments to connect certain points along a proposed path. A huge body of knowledge has been developed over a long period of time, in many aspects predating the availability of modern computers and their software. **State of the art in contemporary engineering** 1. Contemporary engineering usually establishes first a horizontal layout in a properly projected plane. 2. In a second step the vertical profile (i.e. sequence of segments with constant gradients together with smoothing segments showing a variation in gradient) is added. 3. In the rail domain in most cases a cant layout is added to the horizontal layout to compensate a part of the unwanted lateral acceleration. 4. In a final step the proposed layout is checked against a defined set of rules, formulas and thresholds to guarantee the conformance against the regulation. The sequence of steps might change from case to case and might be repeated one or more times to achieve the economic objectives and fulfill regulatory safety requirements. Contemporary alignment design almost always implements a 2.5 dimension approach. The resulting and documented geometry might be very precise or just good enough to meet safety thresholds. This depends on factors like priorities of the management, date of the design - existing alignments might have been designed more then 50 years ago - or software tools used. Working with legacy data in a high precision BIM model requires a good understanding of these factors. **Distinction between business modeling and IFC core geometry** According to IFC modeling principles alignment entities are organised in two large parts. The two parts work together, but they can also be used independently from each other 1. Business aspects of alignment 2. Representation with the IFC geometry resources **Business aspects of alignment:** Here the focus is a on a schema structure as close to business terminology as possible. It is possible to have a very detailed segment structure with many domain specific properties attached. Examples for domain specific properties are design speed or cant deficiency. **Representation with IFC geometry resources:** Here the focus is on using as much of the established IFC geometry entities as possible. A mapping between Business aspects and IFC geometry is proposed. **IFC modelling** In IFC a single alignment must have: * a horizontal alignment defined in the x/y plane of the engineering coordinate system A single alignment may have: * an accompanying vertical alignment, defined along the horizontal alignment in the distance along / z coordinate space * a relative alignment, defined as a span within another alignment and/or at constant or variable offsets * a 3D alignment, either computed from the horizontal and vertical alignment, or extracted from geospatial data. Alignments may be aggregated into referents (_IfcReferent_) or derivative alignments. Derivative alignments may be used to indicate dependent alignments, such as an alignment for a bridge that is relative to a parent alignment for a road, where the child _IfcAlignment_ may have its shape representation set to _IfcOffsetCurveByDistances_ that starts and ends at a span within the extent of the shape representation of the parent _IfcAlignment_. Alignments may be assigned to groups using _IfcRelAssignsToGroup_, where _IfcGroup_ or subtypes may capture information common to multiple alignments. Supported shape representations of IfcAlignment are: * _IfcGradientCurve_ as a 3D horizontal and vertical alignment (represented by their alignment segments) * _IfcCompositeCurve_ as a 2D horizontal alignment (represented by its horizontal alignment segments) without a vertical alignment * _IfcOffsetCurveByDistances_ as a 2D or 3D curve defined relative to an _IfcAlignmentCurve_ or another _IfcOffsetCurveByDistances_ * _IfcSegmentedReferenceCurve_ as a 3D curve defined relative to an _IfcGradientCurve_ to incorporate the application of cant * _IfcPolyline_ as a 3D alignment by a 3D polyline representation (such as coming from a survey) * _IfcPolyline_ as a 2D horizontal alignment by a 2D polyline representation (such as in very early planning phases or as a map representation) The _RepresentationIdentifier_ shall always be set to ''Axis'' and the _RepresentationType_ shall be set to either ''Curve2D'' or ''Curve3D'' depending on if the referenced curve is 2- or 3-dimensional > NOTE&nbsp; Derivative specifications (Model View Definitions) may expand the above set to include additional supported curve types.
_IfcLinearVelocityMeasure_ is a measure of the velocity of a body measured in terms of distance moved per unit time. Usually measured in m/s. Type: REAL > HISTORY&nbsp; New type in IFC2.0.
A transponder is a communication, monitoring, or control device that, upon receiving a signal, emits a different signal in response. Transponders can be either passive or active (e.g., electronic beacon, balise).
A radio block center is a specialised computing device in railway with specification for generating Movement Authorities (MA) and transmitting it to trains. It gets information from signalling control and from the trains in its section.
Properties used for a cable arranger. The property set can be used by the predefined type CABLEARRANGER of IfcDiscreteAccessory.
A single linear element within a cable or an exposed wire (such as for grounding) with the specific purpose to lead electric current, data, or a telecommunications signal.
A communication terminal is an audio communication device that is usually installed along transportation infrastructure (railways, roads, tunnels etc.) in order to be used by the general public or operation agents for communication. It may specifically be used to make calls to emergency services in tunnels.
Enumeration of the different point machines used in railway.
A distribution point at which connections are made for distribution of electrical circuits usually through protective devices.
A fitting that joins two cable segments of different connector types.
_IfcNormalisedRatioMeasure_ is a dimensionless measure to express ratio values ranging from 0.0 to 1.0. Type: REAL > HISTORY&nbsp; New type in IFC2x.
Properties used for railway communication terminals.
Sensor-based system for building and infastructure environmental monitoring and control.
Properties for track slab that have embedded tracks recessed into road surface.
A distribution system which forms the intended path for the traction return current and the current under fault conditions.
Enumeration of modem traffic interface types.
Properties common to IfcRail types and occurrences with PredefinedType set to CHECKRAIL.
_IfcReal_ is a defined type of simple data type REAL. It is required since a select type (_IfcSimpleValue_), cannot directly include simple types in its select list. In principle, the domain of _IfcReal_ (being a Real) is all rational, irrational and scientific real numbers. Here the precision is unconstrained, but in practice it is implementation specific. Type: REAL > HISTORY&nbsp; New type in IFC1.5.1.
The slab is used to represent a floor slab against the ground (and thereby being a part of the foundation). Another name is mat foundation.
Unitary control element type common attributes. HISTORY: Added in IFC4.
A device composed of pneumatic, mechanic or electric components causing the braking of a train in case of emergency.
A remote radio unit is a component of a distributed base transceiver station that converts digital baseband signals into high-frequency (rf) signals and sends high-frequency (rf) signals to the antenna for radiation.
A signal type formed of an active device conveying information by emitting an audio signal such as a beep, ring, horn or explosive sound.
Properties of a traction power system. The property is associated to the predefined type ELECTRICAL of _IfcDistributionSystem_, and is used to characterise systems such as railway electrical distribution networks used to provide energy for rolling stock.
A label is the term by which something may be referred to. It is a string which represents the human-interpretable name of something and shall have a natural-language meaning. Type: STRING of up to 255 characters > NOTE&nbsp; Type adapted from **label** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC2x. { .change-ifc2x4} > IFC4 CHANGE&nbsp; Previously recommended size restriction of 255 characters is now mandatory. { .use-head} Value restrictions As a human-readable string for naming purposes, a label is usually human-specified and locale-dependent (in contrast to purely machine-readable identifiers, _IfcIdentifier_). > NOTE&nbsp; The set of characters that may appear in STRINGs exchanged in the exchange structure as defined in ISO 10303.21 is provided in ISO 10646. The encoding of characters in case of file-based exchange is defined in ISO 10303-21 and ISO 10303-28. Among else, these specifications define the encoding of 8-bit characters from ISO 8859-1...-16 and of 2-byte and 4-byte Unicode characters from ISO 10646. > NOTE&nbsp; While _IfcIdentifier_ is restricted to 255 characters, the size in exchange files after encoding may be considerably larger than 255 octets, depending on the particular encoding and on the contents of the identifier.
A non-metallic pad placed between rail and baseplate or rail and sleeper, bearer or slab. Note: definition from EN 13481-1.
The _IfcUnitaryControlElementTypeEnum_ defines the range of different types and/or functions of unitary control elements possible. > HISTORY&nbsp; New enumeration in IFC4.
A cable carrier fitting is a fitting that is placed at junction or transition in a cable carrier system. > HISTORY&nbsp; New entity in IFC4 { .note} >
Cable port occurrence attributes attached to an instance of IfcDistributionPort.
A subrack is a part of technical cabinet which is used to store and mount pluggable electric subunits.
A complex assembly of components used to suspend elements or cable segments.
Properties common to occurrences and types of IfcCableSegment and IfcCableFitting applied in telecommunication domain.
A path for equipotential bonding, conducting current to the ground.
**Definition from ISO/CD 10303-41:1992**: A thermodynamic temperature measure is the value for the degree of heat of a body. Usually measured in degrees Kelvin (K). Type: REAL > NOTE&nbsp; Corresponding ISO 10303 name: thermodynamic_temperature_measure, please refer to ISO/IS 10303-41 for the final definition of the formal standard. > HISTORY&nbsp; New type in IFC1.5.1.
A fan out is a special cable fitting that provides a safe transition from multi-fiber cable units to individual fibers.
A baseband unit is a component of a distributed base transceiver station for implementing baseband processing functions.
Properties common to a computer. This property set is applied to a type or occurrence of _IfcCommunicationsAppliance_ with predefined type of COMPUTER.
Properties that are applicable to a type or an occurence of dropper.
Connection to cable segment or fitting for distribution of electricity.
Base quantities that are common to the definition of all occurrences of controller.
Enumeration describing the payment method.
Properties applicable to a coaxial cable, which is a copper cable with a variable number of copper coaxial pair conductors used to transmit data by means of electrical signals, especially at radio frequency. This property set is applicable to a type or occurence of _IfcCableSegment_ with predefined type CABLESEGMENT.
Properties of rail fastening used in railway track system. The property set can be used by the predefined type RAILFASTENING of IfcMechanicalFastener.
A dropper is a cable carrier used to suspend cable from another cable. It could also conduct electricity.
_IfcModulusOfElasticityMeasure_ is a measure of modulus of elasticity. Usually measured in N/m2. Type: REAL > HISTORY&nbsp; New type in IFC2x.
An identifier is an alphanumeric string which allows an individual thing to be identified. It may not provide natural-language meaning. Type: STRING of up to 255 characters > NOTE&nbsp; Type adapted from **identifier** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC2x. { .change-ifc2x4} > IFC 2x4 CHANGE&nbsp; Previously recommended size restriction of 255 characters is now mandatory. { .use-head} Value restrictions As a merely machine-readable string for identification purposes, an identifier is usually machine-generated and locale-independent (in contrast to human-readable labels, _IfcLabel_). > NOTE&nbsp; The set of characters that may appear in STRINGs exchanged in the exchange structure as defined in ISO 10303.21 is provided in ISO 10646. The encoding of characters in case of file-based exchange is defined in ISO 10303-21 and ISO 10303-28. Among else, these specifications define the encoding of 8-bit characters from ISO 8859-1...-16 and of 2-byte and 4-byte Unicode characters from ISO 10646. > NOTE&nbsp; While _IfcIdentifier_ is restricted to 255 characters, the size in exchange files after encoding may be considerably larger than 255 octets, depending on the particular encoding and on the contents of the identifier.
Properties for the occurrence of an electrical cable, core or conductor that conforms to a type as specified by an appropriate type definition within IFC. NOTE: Maximum allowed voltage drop should be derived from the property within Pset_ElectricalCircuit.
The temperature rate of change measures the difference of a temperature per time (positive: rise, negative: fall), as for instance used with heat sensors. It is for example measured in K/s (Kelvin per second). Type: REAL > HISTORY&nbsp; New type in IFC4.
A light fixture having specific purpose of directing occupants in an emergency, such as an illuminated exit sign or emergency flood light.
Base quantities that are common to the definition of all occurrences of flow cable fitting.
An _IfcPlaneAngleMeasure_ is the value of an angle in a plane. Usually measured in radian (rad, m/m = 1), but also grads may be used. The grad unit has to be declared as a conversion based unit based on radian unit. > NOTE&nbsp; _IfcPlaneAngleMeasure_ is used where angles need to be described to an accuracy of less than one degree and expressed as decimal parts of an angle. It is widely used for angular measurement except for situations where accuracy needs to be defined using arc measurement; for which purpose the _IfcCompoundPlaneAngleMeasure_ is provided. Type: REAL > NOTE&nbsp; Type adapted from **plane_angle_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1.
An emergency stop device acts to remove as quickly as possible any danger that may have arisen unexpectedly.
Properties common to IfcRail types and occurrences with PredefinedType set to RAIL.
Enumeration of the different fiber types.
Properties common to a telephony exchange. This property set is applied to a type or occurrence of _IfcCommunicationsAppliance_ with predefined type TELEPHONYEXCHANGE.
Properties of locking equipment. The property set can be used by the predefined type LOCK of IfcDiscreteAccessory.
A linear (usually vertical) member used to support something or to mark a point.
_IfcElectricResistanceMeasure_ is a measure of the electric resistance. Usually measured in Ohm (V/A). Type: REAL > HISTORY&nbsp; New type in IFC2x.
Properties of power control system. The property set can be used by the predefined type ELECTRICAL of IfcDistributionSystem. The property set can be used to characterize the system that controls the railway energy network.
Base quantities that are common to the definition of all occurrences of unitary control element.
Properties of a catenary wire, which is a longtitudinal wire supporting the grooved contact wires. Properties in this property set are applicable to a type or an occurence _ifcCableCarrierSegment_ with predefined type of CATENARYWIRE.
The properties defined by this _IfcPropertyTemplate_ are of type _IfcQuantityArea_.
An _IfcExternalReference_ is the identification of information that is not explicitly represented in the current model or in the project database (as an implementation of the current model). Such information may be contained in classifications, documents or libraries. The _IfcExternalReference_ identifies a particular item, such as a dictionary entry, a classification notation, or a document reference within the external source. Only the _Location_ (as a URL) is given to describe the place where the information can be found. Also an optional _Identification_ as a key to allow more specific references (as to sections or tables) is provided. The _Identification_ defines a system interpretable method to identify the relevant part of information at the source. In addition a human interpretable _Name_ can be assigned to identify the information subject, such as a classification code. _IfcExternalReference_ is an abstract supertype of all external reference entities. > HISTORY&nbsp; New entity in IFC2x. { .change-ifc2x4} > IFC 2x4 CHANGE&nbsp; Attribute _Identification_ renamed from ItemReference, attribute _Location_ datatype changed, and inverse attribute _ExternalReferenceForResources_ added.
Enumeration describing the ticket vending machine type.
A sign type formed of a flat plate with some written or symbolic images on it.
_IfcInductanceMeasure_ is a measure of the inductance. Usually measure in Henry (H, Weber/A = V s/A). Type: REAL > HISTORY&nbsp; New type in IFC2x.
_IfcVolumetricFlowRateMeasure_ is a measure of the volume of a medium flowing per unit time. Usually measured in m3/s. Type: REAL > HISTORY&nbsp; New type in IFC2.0.
Energy switching assembly properties used in railway. The property set can be used by the predefined type TRACTION_SWITCHING_ASSEMBLY of IfcElementAssembly.
Properties that are applicable for IfcSensor with predefined type EARTHQUAKESENSOR.
A device, usually attached to the rear end of the last vehicle of a train, acting on a fixed equipment to give an indication that the train is complete.
The IfcAlignmentCantSegmentTypeEnum indicates the type of a segment of a cant alignment segment (IfcAlignmentCantSegment). Cant is defined as the amount by which one running rail is raised above the other running rail, in a track cross section. >NOTE Definition according to EN 13803/2017 For 3D modeling both the cant value and the cant angle (bank angle, lateral angle, cross slope angle) are relevant. The relation between cant value **D**, Railhead distance **b** and cant angle **ψ** is shown below. !["Cant angle ψ"](../../../../../../figures/ifcalignmentcantsegmenttypeenum-CantAngle.png "Figure 1 — Cant angle, Cant, Railhead distance") >NOTE in contempory track engineering ψ is approximated by sinus of ψ or tangens of ψ very often. | Variation of Cant | Segmenttype | Enumeration Values | |:----|:------------------|:----------| | 0 | both rails without relative elevation | CONSTANTCANT | | constant in the complete segment, <> 0 | elevated rail | CONSTANTCANT | | variation along the segment | Transition with linear cant variation | LINEARTRANSITION | | variation along the segment | Transition with non-linear cant variation | HELMERTCURVE, BLOSSCURVE, COSINECURVE, SINECURVE, VIENNESEBEND | **Cant variation in high performance transition bends** While for combinations of horizontal clothoids and linear cant transitions the extension along the base line differs in some cases, curvature transition and cant transition for high performance horizontal transition bends are expected to have the same start position and end position. In some regulations the same linear extension requirement is mandatory for high performance transition bends. Whether the cant variation is defined by the same base formula as the curvature of the corresponding horizontal high performance transition bend or by a linear ramp also might differ between regulations. **Used Symbols and their meaning** | Symbol | meaning | Unit, value range | |:----|:------------------|:----------| | L | full length of segment | positive length L > 0 | | s | current position on segment | 0 < s < L | | ξ | = s / L (Greek "xi") standardised, dimensionless path length along the alignment / track centre line | 0 < ξ < 1 | | D | cant .... amount by which one running rail is raised above the other running rail, in a track cross section | length | | D1 | cant at beginning of the alignment segment | length | | D(s) | variable cant at station "s" along the alignment cant segment. | length | | b | Railhead distance; distance between the nominal centre points of the two contact patches of a wheelset (e.g. about 1500 mm for nominal track gauge 1435 mm) | length | | ψ | (Greek "psi") Angle of cant (cross slope angle, bank angle) | rad | | φ | (Greek "phi") Directional angle (azimuth, bearing) | rad | >NOTE Symbols according to EN 13803/2017
Properties in this property set are generally applicable slabs used in railway tracks, modelled as IfcSlab with PredefinedType TRACKSLAB.
Properties of wire pair segments. This property set is applicable to a type or occurence of _IfcCableSegment_ with predefined type WIREPAIRSEGMENT.
Enumeration of the different armours used for cable.
A component which supports and retains the stock rail and a flat surface upon which the foot of the switch rail slides.
Properties common to the definition of all occurrences of _IfcMobileTelecommunicationsAppliance_ and types of _IfcMobileTelecommunicationsApplianceType_ with the predefined type set to REMOTEUNIT.
Properties of tie bar. A tie bar is a linear bar element used to secure or stabilise a structure by resisting lateral and longitudinal loading through tension and or compression. usually formed by a solid bar.
An _IfcLengthMeasure_ is the value of a distance. Type: REAL > NOTE&nbsp; Type adapted from **length_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1.
Properties applicable to a railway balise. This property set is applied to a type or occurrence of _IfcCommunicationsAppliance_ with predefined type TRANSPONDER.
Properties common to the definition of all occurrences of _IfcMobileTelecommunicationsAppliance_ and types of _IfcMobileTelecommunicationsApplianceType_ with the predefined type set to MOBILESWITCHINGCENTER.
Properties of optical splitter used in the telecommunication domain. This property set can be used by the predefined type DATA of IfcJunctionBox.
Enumeration of the position where or how the arranger is positioned relative to place (usually a cabinet) where it is affiiated.
A cable arranger is a flexible accessory or a part of a component placed around cables to arrange and minimize flexing of them at the point where it is placed.
Properties of batteries. The property set can be used by the predefined type BATTERY of IfcElectricFlowStorageDevice.
A component in the track for sound absorption and may also absorb vibrations. It is often used in combination with slab tracks.
Enumeration of the different junctions used in railway track.
A mechanical gate consisting of revolving arms, allowing only one person at a time to pass through.
Properties common to IfcRail types and occurrences with PredefinedType set to GUARDRAIL.
Trackwork ensuring the support and guidance of a vehicle along a route. It consists of assembly of rail, sleepers and fastenings.
Property set for optical pigtail. This property set is applicable to a type or occurence of _IfcCableSegment_ with predefined type OPTICALCABLESEGMENT.
A supporting wall used to protect against soil layers behind. Special types of a retaining wall may be e.g. Gabion wall and Grib wall. Examples of retaining walls are wing wall, headwall, stem wall, pierwall and protecting wall.
Turnout panel properties used in railway. The property set can be used by the predefined type TURNOUT_PANEL of IfcElementAssembly.
Properties in this property set are applied to transport equipment that act in optical transport network (OTN) system.
An _IfcAlignmentCant_ is a lateral inclination profile defined along the horizontal alignment. All points defined in this profile have two coordinate values. The first value is the distance along the horizontal alignment, and the second value is the height relative to the projection of the point along vertical alignment. **Cant as a railway specificity** !["Why cant is applied"](../../figures/ifcalignmentcant_wojtczak_2018.png "Figure 1 &mdash; Cant - compensation for lateral acceleration.") &gt;NOTE figure was first published in (Basics of) Railway Curve Kinematics Presentation, (Wojtczak 2018) The diagram in the figure above shows the principle of compensating part of the lateral acceleration by elevating the outer rail relative to the inner rail of a track. Almost always the following principles for the placement of horizontal segments and cant segments are implemented: * Straight horizontal line: no applied cant * Horizontal circular arc: constant applied cant * Horizontal transition bend: variation of applied cant according to a defined formula In specific difficult topographic environments like mountain lines the extension of a cant transition may differ from the horizontal transition. So far this has only been found for clothoids and is either a so called shortened ramp (can transition is shorter than the corresponding horizontal curvature transition) or a so called \X2\201C\X0\scissor\X2\201D\X0\ ramp (overlapping variations of cant on both rails with opposite direction). Application of high-performance horizontal transition bends is always combined with a cant transition with identical start and end location. In real world designs, such as slow speed sections in railway stations, exceptions to the above principles can be found. It might even happen that the inner rail is elevated relative to the outer rail. Detailed geometric modelling of the superelevation has a low priority in the existing processes in most rail companies. This will very probably change with the introduction of 3D modelling in rail design. The following list shows some use cases: * Correct 3D placement of certain assets (e.g. sleepers) * Relevant input for calculation of structural gauge space * Correct calculation of horizontal coordinate values for the Viennese Bend\S\. (high performance transition bend) !["Cant and structural gauge space"](../../figures/ifcalignmentcant_structural_gauge_and_cant.png "Figure 2 &mdash; Cant and structural gauge space")
Enumeration of stiffness levels of the rail pad.
A type of railing designed to guard human or vehicle occupants from falling off a stair, ramp or landing where there is a vertical drop at the edge of such floors/landings, or to provide restraint to an errant road vehicle, installed on the central reserve of or alongside a road.
Properties common to the definition of all occurrences of _IfcMobileTelecommunicationsAppliance_ and types of _IfcMobileTelecommunicationsApplianceType_ with the predefined type set to BASETRANSCEIVERSTATION.
_IfcForceMeasure_ is a measure of the force. Usually measured in Newton (N, kg m/s2). Type: REAL > HISTORY&nbsp; New type in IFC2x.
_IfcThermalExpansionCoeffientMeasure_ is a measure of the thermal expansion coefficient of a material, which expresses its elongation (as a ratio) per temperature difference. It is usually measured in 1/K. A positive elongation per (positive) rise of temperature is expressed by a positive value. Type: REAL > HISTORY&nbsp; New type in IFC2x2.
_IfcIntegerCountRateMeasure_ is a measure of the integer number of units flowing per unit time. > EXAMPLE: This measure may be used for measuring integer units per second or per hour. For example, it may be used to measure the number of books per hour passing along a part of a mechanical book handling system, the number of people per hour travelling along a moving walkway or the number of vehicles per hour travelling along a section of road. Type: INTEGER > HISTORY&nbsp; New type in IFC2.0.
A recharger or battery charger is a device used to put energy into a secondary cell or rechargeable battery by forcing an electric current through it.
A desktop, laptop, tablet, or other type of computer that can be moved from one place to another and connected to an electrical supply via a plugged outlet.
Properties of a rail brace. The property set can be used by the predefined type RAILBRACE of IfcDiscreteAccessory.
An outlet used for connecting communications equipment.
A device that will electrically open the circuit after a period of prolonged, abnormal current flow.
Properties applicable to the insulator type of discrete accessory, indicated that the insulator is a section insulator used in the overhead contact line system.
Chamber constructed on a drain, sewer or pipeline with a removable cover that permits visble inspection.
Properties common to the definition to all occurrences and types of IfcTrackElement with PredefinedType set to SLEEPER.
Properties specific to busbar cable segments.
A selector switch is a switch that adjusts electrical power through a multi-position action. HISTORY: Added in IFC4.
Energy cantilever properties used in railway. The property set can be used by the predefined type SUSPENSION_ASSEMBLY of IfcElementAssembly.
Properties of sectioning device used in railway. The property set can be used by the predefined type INSULATOR of IfcDiscreteAccessory.
Base quantities that are common to the definition of all occurrences of cable carrier fitting.
A gate is a point of entry into a space usually within an opening in a fence. Or as a "free standing" gate.
Properties for _IfcDistributionBoard_ with PredefinedType DISTRIBUTIONFRAME.
A device that hydraulically actuates a control element.
A stitch wire consists of auxiliary wires and different components (clamp) used in stitched suspension.
The reference marker is a notation referent, typically located in the right of way of the road, rail or other transportation system. Usually reference markers are initially spaced at a uniform distance along the linear element being measured, though subsequent re-alignments can result in uneven spacing between the markers. >NOTE&nbsp;definition from ISO 19148:2021 >NOTE&nbsp;The physical manifestation of the IfcReferent.REFERENCEMARKER can be an IfcSign.MARKER (e.g., a bolt fixed on a post)
A device designed to support and insulate a conductive element. Note: definition from IEC 151-15-39.
The MSC server mainly comprises the call control (CC) and mobility control parts of a mobile switching center (MSC). An MSC server and a media gateway make up the full functionality of an MSC.
A cable bracket is a horizontal cable support fixed at one end only, spaced at intervals, on which cables rest.
Properties of optical cables segments. This property set is applicable to a type or occurence of _IfcCableSegment_ with predefined type OPTICALCABLESEGMENT.
A selector switch has multiple positions, and may change the source or level of power or other setting (according to the switched port type).
A unitary control element combines a number of control components into a single product, such as a thermostat or humidistat. A unitary control element provides a housing for an aggregation of control or electrical distribution elements that, in combination, perform a singular (unitary) purpose. Each item in the aggregation may have its own geometric representation and location. > HISTORY&nbsp; New entity in IFC4 { .note} >
An _IfcAlignmentVertical_ is a height profile along the horizontal alignment. Points along a vertical alignment have two coordinate values. The first value is the distance along the horizontal alignment, the second value is the height according to the project engineering coordinate system. Based on the context of the project, they are georeferenced and the height value is convertible into orthogonal height above/below the vertical datum. > NOTE&nbsp; Georeferencing is provided by _IfcCoordinateOperation_ through the _IfcGeometricRepresentationContext_ defined at _IfcProject_.
Cable with a specific purpose to lead electric current within a circuit or any other electric construction. Includes all types of electric cables, mainly several core segments or conductor segments wrapped together.
A track end of alignment is a special functional installation such as axle-gauge changeover point or transporter wagon loading point.
A device that measures and displays the voltage in a circuit.
Properties common to the definition of all occurrences of _IfcMobileTelecommunicationsAppliance_ and types of _IfcMobileTelecommunicationsApplianceType_ with the predefined type set to MSCSERVER.
Properties associated to electronic filter. An electronic filter is a device designed to transmit spectral components of signals according to a specified law, generally in order to pass the components in certain frequency bands and to attenuate those in other bands (IEC702-09-17)
Enumeration of the different turnout panel orientations used in railway.
The _IfcCableSegmentTypeEnum_ defines the range of different types of cable segment that can be specified. > HISTORY&nbsp; New type in IFC2x2. Core and busbar segment added in IFC4.
Recess or chamber formed to permit access for inspection of substructure and services.
hamber constructed on a drain, sewer or pipeline with a removable cover that permits the entry of a person.
Enumeration of computer user interface types.
Enumeration of the different turnout heaters used in railway.
Properties common to the definition of all occurrences of _IfcMobileTelecommunicationsAppliance_ and types of _IfcMobileTelecommunicationsApplianceType_ with the predefined type set to ACCESSPOINT.
_IfcBoolean_ is a defined data type of simple data type Boolean. It is required since a select type (_IfcSimpleValue_) cannot directly include simple types in its select list. A Boolean type can have value TRUE or FALSE. Type: BOOLEAN > HISTORY&nbsp; New type in IFC1.5.1.
A self contained element of a cable that comprises one or more conductors and sheathing.The core of one lead is normally single wired or multiwired which are intertwined.
A linear element (usually sloped) often used for bracing of a girder or truss.
A device that reads and displays the current flow in a circuit.
A half set of blades consists of one stock rail and its switch rail complete with small fittings. It is right or left hand as seen by an observer in the centre of the track facing the switch heel from the switch toe. Note: definition from EN 13232-1-2004.
A coherent set of attributes representing the breaking capacity of a fuse, defined in accordance with IEC 60269. Note - A protective device may be associated with different instances of this pSet providing information related to different basic characteristics.
Electrical conductor that makes a common connection between several electrical circuits. Properties of a busbar are the same as those of a cable segment and are captured by the cable segment property set.
_IfcLogical_IfcSimpleValue_) cannot directly include simple types in its select list). Logical datatype can have values TRUE, FALSE or UNKNOWN._ Type: LOGICAL > HISTORY&nbsp; New type in IFC2x.
An access point is a device that allows wireless devices to connect to a wired network.
Properties that characterize security lighting.
A fiber segment is an individual optical fiber used in telecommunication systems to transmit data by means of optical signals.
A coin-sized device that is used as a loud warning signal to train drivers. It is usually placed on the top of the rail, usually secured with two lead straps, one on each side.
A common assembly used to insure the switching function. It is composed of switches, control instruments and other components.
A device that stores electric charge when an external power supply is present using the electrical property of capacitance. Two-terminal device characterized essentially by its capacitance. Note: definition from IEC 60050 151-13-28.
Properties of rail pads. The property set can be used by the predefined type RAILPAD of IfcDiscreteAccessory.
A structure, fairly quick to setup, move or dismantle, used to give protection, especially from the weather or intrusion.
Properties of a weight tensioner. The property set can be used by the predefined type TENSIONINGEQUIPMENT of IfcDiscreteAccessory.
An equipment used to maintain the tension of conductors or cables.
A device that senses or detects foreign objects that shock or break the power network. It may alarm when such accidents happen.
A base station controller (BSC) is a network component with the functions for controlling one or more base transceiver stations. BSC is responsible for the management of various interfaces, wireless resources and parameters, the signalling processing of call establishment and the channel allocation in the cell.
A rail component that prevents rails from tipping and twisting.
An assembly of plates, members, cables or fasteners that form a vertical structure for the support or mounting of other equipment such as lights, sonar or wireless transmitters.
A track slab is a reinforced concrete slab or prestressed reinforced concrete slab, which is a main element of slab track. It can be prefabricated or cast on site and may have sleepers embedded.
Enumeration of the different turnouts used in railway track.
A controller is a device that monitors inputs and controls outputs within a building automation system. A controller may be physical (having placement within a spatial structure) or logical (a software interface or aggregated within a programmable physical controller). > HISTORY&nbsp; New entity in IFC4 { .note} >
Enumeration of the different supporting systems used in railway energy domain.
A rack rail is a building module for enhancing traction and break performance.
An open container for environmental protection and storage of chemical products.
Device which permits longitudinal relative rail movement of two adjacent rails, while maintaining correct guidance and support. Note: definition from NF EN 13232-1-2004.
A device designed to produce sudden predetermined changes in one or more electric output circuits, when certain conditions are fulfilled in the electric input circuits controlling the device. Note: definition from IEC 60050 151-13-31.
Describes the manner in which measurements are made along (and optionally offset from) a linear element. > NOTE Definition according to ISO 19148:2021
A technical cabinet is a piece of furniture for holding, displaying and protecting technical appliances, usually organized in shelves, drawers or racks.
Properties that are applicable for IfcSensor with predefined type TURNOUTCLOSURESENSOR.
Enumeration of different types of electronic filter.
The service GPRS support node (SGSN) is a component of the GPRS core network. It is the GPRS support node of mobile station service, and it can achieve mobility management and packet routing and transfer.
Individual segment along the _IfcAlignmentVertical_, being defined in the distance-along/z coordinate space. The vertical alignment is defined by segments that connects end-to-start. The vertical alignment curve geometry is defined in a plane with x = distance along horizontal, the y = height (or elevation). The transition at the segment connection is not enforced to be tangential, The _IfcSegment_ _Transition_ enumeration specifies the type of transition explicitly. The following vertical segment types are defined: * line segment - _IfcAlignmentVerticalSegmentTypeEnum_ .LINE. * circular arc segment - _IfcAlignmentVerticalSegmentTypeEnum_ .ARC. * parabolic arc segment - _IfcAlignmentVerticalSegmentTypeEnum_ .PARABOLICARC. which can describe symmetric and unsymmetric parabolas * transition segment with linear curvature variation - _IfcAlignmentVerticalSegmentTypeEnum_ .CLOTHOID. For each vertical segment, the following non-redundant information is provided: * the start point (in distance along/ height coordinates) * the start gradient (as a ratio measure with horizontal being 0, uphill positive, and downhill negative) usually between 1 < n < -1 (equal to a percentage of 100% < n < -100%, or to a degree of 45° < n < -45° but higher values are possible) * the length (as horizontal length along the distance along (not the curve segment length)) * the curve parameter needed for circular and parabolic arc segments The following information can be calculated (and is therefore not exchanged explicitly to avoid redundancy and inconsistencies) * the end distance along (from the distance along and segment length) * the end height (from start distance along, gradient, length and curve parameter) * the end direction (from start direction, segment length and curve parameter) * the point of vertical intersection (from start direction and end direction) The following checks can be done to validate the correct exchange: * continuity \X2\2013\X0\ does the calculated end distance along of the previous segment matches with the provided start distance along of this segment * tangential continuity \X2\2013\X0\ does the calculated end gradient of the previous segment matches with the provided start gradient of this segment > NOTE Specific subtypes of the IfcAlignmentVerticalSegment add specific geometric curve parameters. Connectivity between vertical segments is not necessarily tangential, but this can be enforced as a requirement through the attribute _TangentialContinuity_. !["Alignment vertical segment"](../../../../../../figures/ifcalignment2dverticalsegment.png "Figure 1 — Alignment vertical segment")
Switch for alternatively closing and opening one or more electric circuits (IEC 60050-151-12-23)
The cabinet is used for placing simulation training server
Real elevation standard deviation / [m]"
Indicates the maximum stress that a material or element can withstand before breaking while being stretched or pulled."
Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as "New" - element designed as new addition, "Existing" - element exists and remains, "Demolish" - element existed but is to be demolished, "Temporary" - element will exists only temporary (like a temporary support structure)."
Non-conducting barrier to protect persons from coming into direct contact with the live conductor rail.
Mass per length, i.e. mass of a beam with a unit length of extrusion. For example measured in kg/m."
Indicates the relative position of the joint, which lies in the left or right rail or in the middle, or in combination. The left rail is to the left as facing in the direction of increasing stationing values, and the right rail is to the right."
Indicates the margin of error of the measurement."
Device for detecting an overheated bearing by measuring the level of infrared radiation emitted by the axle box of a vehicle.
Width, in the event of the shape being non circular in plan."
A device designed to carry, through insulators(or no), a set of conductors of overhead line.
Tangential Continuity for the end point. Possible values are: Not connected according national regulation Connect with directional bend Connected "
Indicates the transverse sensitivity ratio of the sensor."
Date on which the object was (or will be) manufactured."
Indicates the type of serial interface used by the device."
The maximum temperature at which a cable or bus is certified to operate."
Type of connection, material, type of screw, adhesion"
Indicates fan operation where True is on, False is off, and Unknown is automatic."
Indicates whether the installation (in the construction stage) is permanent (TRUE) or temporary (FALSE)"
referenced contracts Are there any contractual agreements, e.g. cost-sharing factor, snow removal, etc."
Indicates the ability to withstand breakage apart under applied force."
Component for increasing the positional stability and functionality of a sleeper Use often depends on topology and line routing Main function: Increasing the lateral stability (Often used in low radius curves in the case of continuous welded rail.) Dovetails with ballast Improves the transmission of longitudinal forces from the running rail into the sleeper (e.g. anti creep device) Assigned to a sleeper Changed to abstract class, GoToMeeting / 22.7.2019
The range of allowed voltage that a device is certified to handle. The upper bound of this value is the maximum."
Origin point of the turnout panel to link the internal reference system with the track node"
Indicates the maximum number of base station controller (BSC) that can be managed simultaneously by the mobile switching center (MSC)."
Date on which the object was (or will be) removed."
Date on which the object was (or will be) installed. "
A control element at which devices that control or monitor the operation of a site, building or part of a building are located"
An electric line whose conductors are supported above ground, generally by means of insulators and appropriate supports Note &#8211; Certain overhead lines may also be constructed with insulated conductors.(IEC 60050-466-01-02)
Distance of object start/end to track edge origin / [m]"
Enumeration that Identifies the types of wind sensors that can be specified."
The material from which the access cover to the chamber is constructed. NOTE: It is assumed that chamber walls will be constructed of a single material."
It is a cabinet for storing LEU equipment of train control center.
Indicates whether the element is accessible by a vehicle or not."
Contact line above the upper limit of the train using an overhead contact line to supply current for use by traction units.
A static piece of apparatus with two or more windings which, by electromagnetic induction, transforms a system of alternating voltage and current into another system of voltage and current usually of different values and at the same frequency for the purpose of transmitting electrical power (IEC 60050-811-26-01)
An engine that raises or lowers the barrier at a crossing
A base station controller (BSC) is a network component with the functions for controlling one or more base transceiver stations. BSC is responsible for the management of various interfaces, wireless resources and parameters, the signalling processing of call establishment and the channel allocation in the cell."
Indication of whether the sleeper was new/used when it was installed"
Designator for whether the element is constructed/welded on site or prefabricated. Example of allowed values : ''On-site'' vs ''Prefabricated''."
A control element that senses and regulates the humidity of a system or space so that the humidity is maintained near a desired setpoint."
Type of power supply method used by the rail lubrication."
A conventional value of apparent power determining a value of the rated current that may be carried with rated voltage applied, under specified conditions. ( IEV ref 421-04-04)"
The depth of the formed space in the duct."
Signalling Outdoor Equipment placeholder (trackside)
This is the trackside zone (non-strictly reserved space) where any signalling equipment can be installed. It has shape, and this shape is flexible (may change)
Nominal value of mechanical force applied to a flow segment."
A designation assigned to an instrument transformer the current (or voltage) error and phase displacement of which remain within specified limits under prescribed conditions of use (IEC 321-01-24)."
The current that has been transformed and is running out of the transformer on the secondary side."
The technical standard which the element should comply with."
Value of the cant right at the beginning of the segment in [mm] "
A fitting that ends a cable segment at a non-electrical element such as a grounding clamp attached to a pipe or to the ground."
Distance of object's start/end to track edge origin / [m]"
Indicates the stiffness of the under-sleeper pad as design reference for the sleeper."
Electrical conduit used to protect and route electrical wiring in a building or structure.
Indicates the power of radio waves emitted by each antenna of the base transceiver station."
Generally bolts which are firmly fixed to permanent components such as foundations, platform edges or civil engineering structures. Their position and elevation are known to the nearest mm (planar, x/y/z coordinates). Serve as a reference for inspecting or ensuring (e.g. by mechanical tamper) the ideal location and elevation of the track panel and other installation elements. Serve to hold technical measuring elements (e.g. prism mirrors)
In curvature context, bounded value of the expansion distance that can be added to rail gauge."
Indicates the user capacity of the device, defined as the maximum number of users that can be active at the same time."
Inherent bumper dimensions/design property / [kJ]"
It is a cabinet for storing station coding composite equipment.
Date on which the object was (or will be) manufactured. "
Part of the Earth which is in electric contact with an earth electrode and the electric potential of which is not necessarily equal to zero.(IEC 60050-195-01-03)
Date on which the check rail was (or will be) manufactured."
Linear two-port device designed to transmit spectral components of the input quantity according to a specified law, generally in order to pass the components in certain frequency bands and to attenuate those in other bands (IEC - 151-13-55)
Very precise traveling of the contact line during span, based on the contact line LRS and mast positions.
An _IfcLengthMeasure_ is the value of a distance. Usually measured in millimeters (mm). Type: REAL > NOTE&nbsp; Type adapted from **length_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1. bSI Documentation
A list of the available types of selector switch from which that required may be selected."
A ring connector that is accepted by ring keyways in the connected pieces; or a toothed circular or square connector that is pressed into the connected pieces."
Electrical connection intended to connect in parallel the conductors of the return circuit.
The recommended air clearances between earth and the live parts of the overhead contactline system."
A device that is used to reguate electric energy.
It is a cabinet for storing the interlocking system host.
Indicates the equipment capacity of the appliance. The value is defined in bits/s."
Indicates whether the derailer is on or not."
A simple switch mechanism for controlling some aspect of a device or a process
Frequency at which an AC electric power system reaches its optimum operating condition."
Type of guard rail design List with certain combination types, e.g. guard rail and/or spot sleeper"
Date on which the object was (or will be) put into operation. "
Diameter of the circle and usable length on top / [m]"
Produces small amount of smoke and irritating deaerator/gas."
YES/NO &#8211; security equipement that check mecanical functionality (RFI)"
Left, Right or in the middle or a combination"
(PR EN_16843) Mechanical rail joint that connects two rails of the same profile, with the additional function to separate both rail ends electrically, without expansion capacity which can resist the forces in CWR.
It is a cabinet for storing station frequency-shift equipment.
Track slab is prefabricated reinforced concrete slab or prestressed reinforced concrete slab, which is a main element of slab track. It transfers the load from rails and fastenings to sub-structures uniformly and longitudinal and lateral load of track structures to displacement-stopping structures. Track Slab shall only appear in ballastless track structures. The line where install track slab provide the place for installing fastening system. No sleeper is needed.
Indicates the frequency range, delimited by a lower frequency and an upper frequency, allocated for uplink transmission."
Indicates the gender of A-end connector."
Cable containing a variable number of optical fibers.
overlap spans where the two conductors are permanently connected together electrically by suitable jumpers
Maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value. Based on IEC60826-11-13. NOTE: The temperature specified value is maximum Design Ambient Temperature."
(EN 13481-1): Assembly of components which secures a rail to the supporting structure and retains it in the required position whilst permitting any necessary vertical, lateral and longitudinal movement.
D: Liste der möglichen Stahl-GÃỳtegrade E: Enumeration of possible Steel grades
Number of phases that the equipment operates on."
It is a cabinet for storing internet safety device of monitoring system
Cabinet for internet safety device of monitoring system
The load rating of the access cover (which may be a value or an alphanumerically defined class rating)."
Abstract class representing any panel for track physical objects.
Connect two tensioning lenght An arrangement of adjacent mechanical sections of the OCL providing continuous contact of the pantograph with the contact wire(s) and continuous current collection. Each length of the contact wire overlaps with the next so that the pantograph slides smoothly from one to the other.(UIC R 791-2006)
Indicates the power range of a single channel of the transport equipment."
Transmission efficiency of the tensioning equipment."
Height of derailment block when derailer in protection state."
a disconnector in which one or more poles have a fuse in series in a composite unit.(IEC 60050-441-14-15)
A quantity defined for a mode of propagation at a given frequency in a specific uniform transmission line or uniform waveguide by one of the three following relations: Z1 = S/ |I|2 Z2 = |U|2 / S Z3 = U / I where Z is the complex characteristic impedance, S the complex power and U and I are the values, usually complex, respectively of a voltage and a current conventionally defined for each type of mode by analogy with transmission line equations."
Building used to contain telecom equipment along trackside / outdoor.
Layered structure : subgrade can be composed of several transition layer with its own properties (such as geotextile and sandâḊ). Various technical solutions and designs. The transition layer has two different functions: 1. it prevents the mixing of the foundation layer and the underlying layer and ensures a pressure-free water flow. 2. it reduces the effects of a rigid substructure (bridges, groundwater tanks, tunnels, etc.) on the ballast bed.
Describe the spatial structure holding all energy domain facilities.
Route for exceptional transport (load, structure gauge, road)"
Conductive part, which may be embedded in a specific conductive medium, e.g. concrete or coke, in electric contact with the Earth.(Grounding rod)(IEC 60050-826-13-05)
Indicates the resolution for length measure of the device."
Coaxial cable, a subtype of copper cable, is a copper cable with a variable number of copper coaxial pair conductors used to transmit data by means of electrical signals, especially at radio frequency.
Number of track centres (edges in accordance with BNT) running over the sleepers (points, diamond switches, three-rail system)"
Indicates the types of interfaces and their number in the device."
Indicates the number of common interfaces on the device."
Distance of start/end of object to track edge origin / [m]"
The maximum voltage to guarantee the drop of the relay node."
Frequency of the AC electric power supply when the device or system reaches its optimum operating condition."
The frequency that is going to be transformed and that runs into the transformer on the primary side."
It is a cabinet for storing data server of monitoring system.
Cabinet for data server of monitoring system
Functional layer that separates the superstructure from the substructure.
Curvature expansion to fit in curves with low radius"
Clamps and fittings provide the mechanical and structural connection of components and provide electrical connections in contact line systems and within cross-span structures.They have to withstand both operating currents and short-circuit current loadsin the energised part of the overhead contact line system.In addition to the mechanical stresses,short-circuit current loads occur in the passive part of the overhead contact line system,at rigid and flexible terminations and also in cross-span equipment.
A control element that senses and regulates the temperature of an element, system or space so that the temperature is maintained near a desired setpoint."
Indicates the radiant frequency of the leaky coaxial cable (radiating cable)."
The Expansion Direction, e.g. single direction, bidirection"
Date on which the ballast bed was (or will be) removed."
Maximum possible impact load retention / [t]"
Cabinet for computer power & environmental monitoring system
The cabinet is used for placing computer power & environmental monitoring system
The optimum voltage for the electrical appliance or system."
Indicates whether the on-site control unit includes earthquake alarm function."
End gradient of the segment. In the case of a PredefinedType=''.CONSTANTGRADIENT.'' the value is the same as _StartGradient_."
Date on which the object was (or will be) installed."
Supertype of all different kinds of sensors, collecting different kinds of information.
The length of the movement bar which indicates the turnout position."
Reference ID for this specified type in this project (e.g. type ''A-1''), provided, if there is no classification reference to a recognized classification system used."
Aspect of weld seam surface, i.e. ''plane'', ''curved'' or ''hollow''. Combined welds are given by two corresponding symbols analogous to Type1 and Type2."
The method / technology used to produce the equipment."
Indicates the maximum number of base transceiver stations (BTSs) that can be handled by the device."
Equipment for detection of the presence of a vehicle where a cable in the form of a loop between the rails, energized by alternating current derived from a local generator, detects the metallic mass of a vehicle, by its influence on the field of the loop, in order to provide an electric signal. [source: IEC 60050-821]
Subtype of stock rail only used in half set of blades
Geometric segments are used to define the horizontal alignment. The segments are ordered. Each horizontal segment is defined with: a starting point known by its cartesian coordinates the starting direction in form of an azimuth [gon] or alternatively [rad](radiant). the segment length in [m] the information on how the segment is connected to the following segment. This information is used to describe possible discontinuities (e.g. if there is a horizontal bend). Additionally: a radius, for arc segments an initial and final radius for transition segments as well as the type of transition curve. Some transition curves require additional parameters.
Non linear cant variation according to Sine curve base formula. **Base formula (Cant)** !["Sine cant transition segment"](../../figures/ifcalignmentcantsegmenttypeenum-sinecurve.png "Figure 1 &mdash; Cant for Sine curve transition segment")"
Retention tray for environnemental protection against oil.
Telecom laying infrastructure connection point
A joiner that connects two laying infrastructures such as ducs, gutters or tubes.
Remote control & display termination of CTC
CTCèṡçẀæ§æẅçṠçḋŸ CTC remote control system provides operator with control and display equipment, generally including display, mouse, keyboard, etc.
Non linear cant variation according to Cosine curve base formula. **Base formula (Cant)** !["Cosine cant transition segment"](../../figures/ifcalignmentcantsegmenttypeenum-cosinecurve.png "Figure 1 &mdash; Cant for Cosine curve transition segment")"
Indication of whether the object lies to the left or right in the track panel direction"
What is the highest permissible load capacity? / [t]"
Distance to start of track edge / [m] "
Indicates the starting wind speed of the wind sensor."
Indicates the maximum number of remote units (RUs) which can be connected to the master unit."
The cabinet is used for placing system software management server
Cabinet of system software management server
Track isolation layer is a structure layer placed on top surface of track bases. It may implement functions of damage repair of track superstructure under special circumstances and coordinate temperature deformation. Track isolation layer shall only appear in ballastless track structures.
A series of devices used to remove snow from railways. E.g. electric heating device, sensor of rail temperature, electric control cabinet, isolating transformer, etc.
A transformer of which one winding is intended to be connected in series with a circuit in order to alter its voltage and the other winding is an energizing winding (IEC 60050-811-26-05, 60050-421-01-12)
Linear Reference System based on the track alignment, used to place some of the trackside objects commonly used within railway.
t.b.d. ask CRBIM@D&#252;sseldorf / [m2]"
Front or back regarding the orientation of the edge"
The frequency that has been transformed and is running out of the transformer on the secondary side."
It is the interface cabinet between interlocking system, train control system and the external control devices ( the cabinet for storing driving and acquisition interface equipment)
Cabinet of driver and acquisition interface equipment
The method of mounting cable segment occurrences on a cable carrier occurrence from which the method required can be selected. This is for the purpose of carrying out ''worst case'' cable sizing calculations and may be a conceptual requirement rather than a statement of the physical occurrences of cable and carrier segments."
The ratio between lay length and the diameter of the single conductor."
These telephone sets are installed along the railway right-of-way in order to be used by the general public or railway agents. They allow hands-free communication that can be established by pressing a button
Indicates the type of the device common interfaces."
Distance to start/end of track edge at front/rear end of running rail"
Indicates the number of manhole covers."
A display device is an output device for presentation of information in visual form. When the input information that is supplied has an electrical signal the display is called an electronic display. Common applications for electronic visual displays are television sets or computer monitors.
D: Liste der Walzwerke E: Enumeration of milling plants
Indicates an error code or identifier, whose meaning is specific to the particular automation system. Example values include: ''ConfigurationError'', ''NotConnected'', ''DeviceFailure'', ''SensorFailure'', ''LastKnown, ''CommunicationsFailure'', ''OutOfService''."
Component fixed to sleeper increasing lateral stability.
Used to connect stay from pole to the foundation.
Number of poles that the equipment affects."
Remote unit is used to amplify a base station signal.
Mechanical connector used to couple two telecom cable endpoints or to connect a telecom cable endpoint to a telecom equipment port. This class is a supertype of optical fiber connector and copper cable connector.
Distance of object start/end to track edge origin / [m] "
Indicates the sequential code of the cable or wire."
propose type "boolean" instead of "enum" or "text" as the values would be "with" and "without" Is the installation permanent or temporary (construction stage)?"
1.Vertical support in solid wood, concrete or steel, or of steel lattice construction, with one end planted in the ground at the side of the track, either directly or through a separate base or foundation(IEC 60050-811-33-20) 2.A main vertical support construction with one end embedded in the ground adjacent to the track,tensioning and registion of the OCL.(UIC R 791-2006)
A fitting at which two branches are taken from the main route of the cable carrier simultaneously."
The active balise is a point device used to transmit variable data packets to the train from the ground.
A general telecom object with some general property groups, which can be inherited by its subclasses.
A space that allows to access to the equipment from the bottom side. It is defined by the minimal distance that must be kept free in the bottom side of the equipment
(PR EN_16843) mechanical rail joint with expansion capacity which can accommodate longitudinal displacement of the jointed rail length, with the additional function to separate both rail ends electrically,
A pair of conductors contained in a copper cable, the pair is always used together to form a circuit to transmit data by means of electric signals.
The maximum duration of the turnout movement before the interlocking turns to out of control status."
nicht gÃỳltig bei Doppelkreuzweiche not applicable for double-slip switches"
Elastic elements are inserted between the superstructure (track and plate on slab track or ballast bed with ballast inserted in) and the tunnel structure (tunnel floor). Some of the elastic elements have a partial decoupling effect between the superstructure and underground due to vibrations. Both helical springs and elastomer blocks or elastomer strips can be used as suspension systems.
Direction in which the bumper is aligned; e.g. same direction as edge or opposite direction"
The ratio of the diameter of the cone bottom surface to the height of the pole."
an instrument transformer consisting of a current and a voltage transformer in the same case (IEC 60050-321-01-03)
Instructions to describe how the system / equipment / facility is assembled."
The thickness of the duct base construction NOTE: It is assumed that duct base will be constructed at a single thickness."
Indicates the transmission rate in bit/s over the wired port."
The resistance through earthing conductor to the ground. Real part of the impedance to earth [SOURCE IEC: 195-01-18]"
Indicates whether the element is equipped with a lightning rod (TRUE) or not (FALSE)."
Indicates the number of antennas integrated in the device."
Indicates the type of ticket vending machine."
A very small radius, semi-rigid hollow plastic tube that houses and protects a certain number of optical fibers. An optical fiber cable may contain many loose fiber tubes.
Indicates if the installation of the element is temporary or not."
An instrument transformer in which the secondary current, in normal conditions of use, is substantially proportional to the primary current and differs in phase from it by an angle which is approximately zero for an appropriate direction of the connections.(IEC 60050-321-02-01)
Specifies the units of measure used by this Linear Referencing Method for measures along the linear element being measured. > NOTE&nbsp;Definition according to ISO 19148:2021."
Rms value of sinusoidal power frequency voltage that the insulation of the given equipment can withstand during tests made under specified conditions and for a specified duration. (IEV ref 614-03-22\X2\FF09\X0\"
Zone that are contening - elements of electrical continuity for the rails, - links to the impedance bond for return current, - return conductor.
Indicates whether the rail is stainless or not."
(NF EN 13232-1-2004) Trackwork ensuring the support and guidance of a vehicle along any given route among various diverging or intersecting tracks.
Indicates the shielded conductor diameter. It is only used for coaxial wire pair."
Indicates whether the element is self lubricated or not."
1-sigma standard deviation [m] of a point in the horizontal plane. The value 0 indicates that the point was calculated and not measured."
The auxiliary wire used in stitched suspension.(IEC 60050-811-33-18/UIC R 791-2006)
A conductor consisting of a single wire.(IEC 60050-466-10-01)
Length of the overhead contact line between two terminating points.(IEC 60050-811-33-61)
Indicates the type of earthquake sensor or accelerometer."
Conductor which provides a conductive path, or part of the conductive path, between a given point in a system or in an installation or in equipment and an earth electrode.
A tall structure using for installing telecom devices such as antennas.
Device checking the position of a blade. [source: IEC 60050-821]
Indicates the colour of the cable or fitting jacket."
A fitting that begins a cable segment at a non-electrical element such as a grounding clamp attached to a pipe."
Indicates if the manufactured rail is drilled at its extremities or not. It can have holes on one, both or none of its extremities."
Distance to start/end of track edge at front/rear end of track panel"
Indicates the number of emergency transceivers in the base band unit."
Longtitudinal wire supporting the grooved contact wires either directly or indirectly.(IEC 60050-811-33-06/UIC R 791-2006)
Subtype of stock rail as a separated manufactured element (i.e. tramways)
Indicates the colour A- end of connector."
A component of a distributed base station that converts digital baseband signals into high-frequency (rf) signals and sends high-frequency (rf) signals to the antenna for radiation.
To be confirmed if it is defined by alignement / [km/h] / t.b.d. ask CRBIM@D&#252;sseldorf"
Indicates the transmitted bandwidth of the master unit."
Maximum load bearing capacity of a supporting structure ( e.g. as applied to the floor structure of a storey, or the supporting capacity of a frame assembly)."
Wind load resistance rating for this object. It is provided according to the national building code."
Allowable operation ambient air temperature range."
Indicates the type of transport equipment."
The ratio, expressed as a numerical value or as a percentage, of the simultaneous maximum demand of a group of electrical appliances or consumers within a specified period, to the sum of their individual maximum demands within the same period. The group of electrical appliances is in this case connected to this circuit. Defenition from IEC 60050, IEV 691-10-04 NOTE1: It is often not desirable to size each conductor in a distribution system to support the total connected load at that point in the network. Diversity is applied on the basis of the anticipated loadings that are likely to result from all loads not being connected at the same time. NOTE2: Diversity is applied to final circuits only, not to sub-main circuits supplying other DBs."
A self-service device with functions of choosing ticket, payment and ticket makingïỳetc. With this device, passengers can buy and collect tickets themselves. Ticket vending machine shall provide a stable, reliable, friendly self-service environment for passengers to purchase or collect tickets conveniently and effectively.
Permissible traffic load for the road design."
Space that allows to access to the equipment. It is defined by the side, top, rear and front access zones.
Is there a topological restriction/object next to the track? Bridge, wall, rock, platform, none"
Indicates whether the locking is inside (TRUE) or outside (FALSE) of the point machine."
Indicates the storage capacity defined by bytes that can be handled by the appliance."
Internal referencing in turnout panel in acc. with installation plan "
Assessment of the condition of the installed running rail (New / Used)"
Railway technical installation to ensure safe operation in the event of human failure (magnet, crocodile etc.).
Opening operation of a switching device intended to remove electric power from an electrical installation to avert or alleviate a hazardous situation. (IEC 60050-826-17-03)
Assembly of one or more capacitor elements assembled in the same housing with lead terminals.
The length of span as a design parameter for the overhead contactline system."
Indicates the frequency range, delimited by a lower frequency and an upper frequency, allocated for downlink transmission."
The nominal current that is designed to be measured."
A lighting device is installed near the level crossing. In the presence of the light signal, it is necessary to moderate the speed and stop.
Indicates whether the blade always returns to the same position as a trailable turnout or not."
In addition to the incoming and outgoing lines, the switchgear is completely enclosed by a grounded metal casing. Switch cabinets/switchgear contain sensitive electrical, electronic and mechanical components to perform control, drive, power supply and safety functions. As a rule, these components are of high quality. Switch cabinets consist of the cabinet housing and door and the interior components (e.g. mounting plates), which generally take the form of drawer units or are mounted on a panel.
The _Identification_ provides a unique identifier of the referenced item within the external source (classification, document or library). It may be provided as * a key, e.g. a classification notation, like NF2.3 * a handle * a uuid or guid It may be human readable (such as a key) or not (such as a handle or uuid) depending on the context of its usage (which has to be determined by local agreement). { .change-ifc2x4} > IFC4 CHANGE Attribute renamed from _ItemReference_ for consistency. >"
A space that allows to access to the equipment from the rear side. It is defined by the minimal distance that must be kept free in the rear side of the equipement
Length of blade from point of turnout blade / [m]"
The length of rail is proposed to supply from Milling plant"
The width of the chamber access cover where the plan shape of the cover is not circular."
Date on which the rail was (or will be) removed."
Distance from beginning of the track edge / [m]"
For a NONLINEAR horizontal segment type the radius of the curve at the start point (_Placement_ of the segment). For CIRCULAR type it is constant i.e. _StartRadiusOfCurvature_ and _EndRadiusOfCurvature_ are always the same. For LINE type, both _StartRadiusOfCurvature_ and _EndRadiusOfCurvature_ is 0. If the radius is 0 it shall be interpreted as INFINITE. Positive values imply a CCW direction whereas negative CW."
Indicates the connection type between the remote radio unit and baseband unit."
It is a cabinet for storing station unit block.
Fastening type, type of fastening on the sleeper"
Reserved area for underground facilities like gutter etc.
Maximum cable length based on voltagedrop. NOTE: This value may also be specified as a constraint within an IFC model if required but is included within the property set at this stage pending implementation of the required capabilities within software applications."
The nominal diameter describing the cross-section size of the fastener type. { .change-ifc2x4} > IFC4 CHANGE&nbsp; Deprecated; the respective attribute of _IfcMechanicalFastenerType_ should be used instead."
Design and type of lubricating system, active/passive?"
Indicates how many carrier frequencies can be managed by the device."
Specifies the method used to strand the cable. Stranding is the process where a particular number of stranding elements are joined together while winding them round a common axis."
Concrete stake for cable location and route indication.
The breaking capacity in [A] for fuses in accordance with the IEC 60269 series."
Structural element on the side of the ballast bed stabilizing the ballast.
The CS-MGW is public switched telephone network / public land mobile network transport termination point for a defined network and interfaces UTRAN (Universal Terrestrial Radio Access Network) with the core network. The MSC can be implemented in two different entities: the MSC server, handling only signalling, and the CS-MGW, handling user's data. An MSC server and a CS-MGW make up the full functionality of MSC.
Indicates the relative position of the element in track, which lies to the left or right as facing in the direction of increasing stationing values."
Indicates the measuring range of snow depth meter."
DataType to specify a linear positioning relative to the Track.
Product/system which is installed as a sliding chair, if the sliding chair contains,. F.e. rollers., lubricating/dry-running bearing plates"
Indicates the type of pantograph as a desgin parameter for the overhead contactline system."
It is a cabinet for storing PIO equipment of train control center.
In a network, a point at which wireless devices may connect to the network. Access point allows a Wi-Fi device to connect to a wired network.
Location, where the external source (classification, document or library) can be accessed by electronic means. The electronic location is provided as an URI, and would normally be given as an URL location string. { .change-ifc2x4} > IFC4 CHANGE&nbsp; The data type has been changed from _IfcLabel_ to _IfcURIReference_ > ."
A fitting that joins two cable segments of different connector types."
Under the control of SCP, IP offers a variety of specialized resources according to the corresponding service logical program. And these resources contain the receiver of DTMF (Dual &#8211;Tone Multi-Frequency, signal generator, record notice, etc. IP provides dedicated resource functions in the intelligent network, allocates, controls and manages various dedicated resources, communicates with other entities in the network, and completes SRF resource functions as well as the maintenance, management and statistics functions of resources.
Port of a telecom active equipment, used for wireless connection.
Indicates the type or manner of data collection."
Horizontal azimuth at the starting point"
Thermal conductivity of soil. Generally, within standards such as IEC 60364-5-52, table 52A-16, the resistivity of soil is required (measured in [SI] units of degK.m /W). This is the reciprocal of the conductivity value and needs to be calculated accordingly."
Indicates the image resolution of snow depth meter."
Minimum operating speed of the point machine."
Geometric primitive. All required attributes are defined in the class "Alignment Vertical Segment".
A non-negative length measure is a length measure that is greater than or equal to zero.
Indication of whether the sleeper has an undersleeperpad and, if so, what type."
Indicates the number of transceivers per antenna."
The identification(s) of technical standard(s) which the object shall comply with. "
Indicates the type of the single fiber."
The voltage that has been transformed and is running out of the transformer on the secondary side."
The ripped plate with or without spikes. Spikes increase the fixation in the wooden sleeper (in narrow curves)"
How and by whom was the sleeper manufactured?"
Lateral displacement of the contact wire to opposite sides of the track centre at successive supports."
Indicates the type of rain sensor or gauge."
We have to define a way to keep life cycle information for all the rail parts. / t.b.d. ask CRBIM@D&#252;sseldorf"
Part of an earthing arrangement comprising only the earth electrodes and their interconnections.(IEC 60050-826-13-06)
Width of transition (with regard to road axis) / [m]"
The temperature value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
Outdoor laying infrastructure (routing) zone
Outdoor space that is reserved for laying telecom cables, ducts, tubes, gutters or manholes
Indicates the optical or electrical attenuation of the cable measured in dB, at a certain wavelength or frequency, changing with the length of the cable."
Track elastic cushion is a kind of layer set on grooved sides of a concrete base, which is used for mitigating the impact of longitudinal and lateral load on track structures. Track elastic cushion shall only appear in ballastless track structures.
Indicates the single wave transmission rate of the transport equipment."
Indicates the number of cable entries in the manhole."
A cabinet that distributes and outputs DC power. The complex power distribution panel also configures the battery pack and monitoring unit.
For horizontal straight lines, compensation of lateral acceleration is not required and should be avoided. Therefore the applied cant value is constant 0. For horizontal circular arcs, compensation of lateral acceleration is very common. In these cases the applied cant value is constant value greater 0. **Base formula (Cant)** !["Constant cant segment"](../../figures/ifcalignmentcantsegmenttypeenum-constantcant.png "Figure 1 &mdash; Constant cant segment")"
Example alignment base on the track LRS to position cable aside of the tracks.
Distance of the axis of the left walkside from the inner edge of the nearest rail (Minimum value) / [m]"
An _IfcPositiveLengthMeasure_ is a length measure that is greater than zero. Type: _IfcLengthMeasure_ > NOTE&nbsp; Type adapted from **positive_length_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1. bSI Documentation
Number of live conductors within this circuit. Either this property or the ConductorFunction property (if only one) may be asserted."
The diameter of the screen around a core segment (if present)."
Indicates supported bytes of the data Information, e.g.127 bytes."
Distribution od current from supply system to train, It include non contact system, conductor rail, contact system
Distance to start of track edge at front/rear end of object "
Elementary abstract object class for topology, according to Railtopomodel (RTM)
The cabinet is used for placing interface server
Concrete base is a kind of reinforced foundation cast in-situ, which is used for supporting track slabs or track concrete slabs. Concrete base shall only appear in ballastless track structures.
Components in the track for sound absorption. May also absorb vibrations. Not included noise barriers at track side. Often used in combination with slab track.
Server is a device used to provide services for different telecommunication subsystems. Servers are widely used in order to permit data access and sharing among applications or devices.
Profile of the rail. The profile defines the geometric form and size of the rail cross-section."
Housing for cables connecting Cable pits and Cable joints.
Equipment installed on track to inspect whether the load of vehicles is biased.
TMSC is responsible for connecting and unblocking long-distance calls, incoming calls and transfer traffic in the mobile switching center service area.
Gradient (=Vertical azimuth) at the starting point "
Spatial relationship where one spatial element passes under another such as a road passing under a bridge
Device of Track circuit receiver or Track circuit transmitter
Referenced track panel or switch panel or dilatation panel"
Starting point defined by the distance along the horizontal alignment. "
DataType to specify a linear positioning relative to the Line.
Indication of how it is fastened to each sleeper, type"
location in panel in acc. with installation plan"
A fitting that joins two cable segments of the same connector type (though potentially different gender)."
Device used to measure wind speed and direction.
Indicates the data transmission type of the master unit."
Indicates the diameter of the fiber tubes that are used in the fan out."
Indication of kilometers on referenced track edge indicating the start of a section where the distance between the sleepers is not constant / [m]"
This class collects all the objects which describe type of cables, containing either fiber or copper wire used in telecom or power supply systems. Always contained in a linearly placed object, thus it is generally positioned with respect to local reference.
A pair of conductors contained in a copper cable. The pair is always used together to form a circuit to transmit data by means of electric signals."
A fastening part having a head at one end and the other end being hammered flat after being passed through holes in the pieces that are fastened together."
The number of CPUs used by the equipment."
The front side port of the distribution frame.
Radius of parabola or arc. Positive values imply a CCW direction whereas negative CW. > NOTE1&nbsp; For _PredefinedType_ is ARC. The radius of the basis circle for the arc. > NOTE2&nbsp; For _PredefinedType_ is PARABOLICARC. Parabola constant (determining the \X2\201C\X0\steepness\X2\201D\X0\ of the parabola). The parabola constant is provided by the \X2\201C\X0\minimum parabola radius\X2\201D\X0\, the true radius of a parabola at its vertical axis (the zero-gradient point of the parabola). The minimum radius is twice the focal length of the parabola (the distance between the focal point and the vertex). > NOTE3&nbsp; For _PredefinedType_ that is not either ARC or PARABOLICARC the value should be empty."
Sine transition or sinusoidal transition was suggested 1937. The curvature function is built up of one period of a sine function. The sine curve is characterised by particularly advantageous smoothing properties at the end points. Compared to the clothoid, it is twice as long. >NOTE&nbsp; also referred to as Klein curve. **Base formula (Curvature)** !["Sine curve transition segment"](../../figures/ifcalignmenthorizontalsegmenttypeenum-sinecurve.png "Figure 1 &mdash; Curvature for horizontal Sine curve transition segment")"
The thickness of the chamber wall construction NOTE: It is assumed that chamber walls will be constructed at a single thickness."
A threaded cylindrical rod that engages with a similarly threaded hole in a nut or any other part to form a fastener. The mechanical fastener often also includes one or more washers and one or more nuts."
Component fixed to rail preventing rail movement from sleeper.
The range of allowed temerature that a device is certified to handle. The upper bound of this value is the maximum."
Mechanical connector used to terminate a wire pair end point so as to allow mechanical connection to another connectorized wire pair end point or to a connectorized telecom equipment port. It can realize electric coupling between two wire pair endpoints.
Defines whether the vertical alignment follows: the lower rail the center line the higher rail "
The working range of the tensioning equipment under normal operation."
The cabinet is used for placing spare / redundant machine
IfcPositiveInteger is a defined type based on simple data type Integer with the additional restriction to positive integers (excluding zero)
A mechanical assembly with e.g. fishplates to join two rail ends with optional functions (insulation or expansion capacity)."
Within what radius is the blade bent? / [m]"
Outdoor space that is reserved to install telecom equipment
Indicates the ratio of money being stuck or jammed in appliance."
Distance from the top of the rail to the lower face of the contact wire, measured perpendicular to the track."
Indication of whether the segment is rigid (= TRUE) or flexible (= FALSE)."
Type of function for which the conductor is intended."
The nominal load that a component can support."
Wedge which is put under or in front of a wheel so that the vehicle can't move. Fixed installation at the end of sidings.
Installation providing push buttons, indicators and switching devices, lever for local operation. In case there is no point machine. (is a track side equipment)
The armour type of the cable for mechanical protection."
Indicates whether the on-site control unit collects information on wind."
Dilatation superstructure is one subtype of track part with Dilatation panel.
Indicates if the turnout makes a connection to another infrastructure owner (for sharing costs)."
Indication of kilometers on referenced track edge indicating the end of a section where the distance between the sleepers is not constant / [m]"
Distance measured between parallel circuits."
Indicates whether the chamber has been designed as being shallow (TRUE) or deep (FALSE)."
Turnouts that are positioned in the curved part of the alignment."
(EN 13481-1) : Non-metallic pad placed between rail and baseplate or rail and sleeper, bearer or slab.
Optional attribute require for the exchange of Vienna bend transition segment."
DataType to specify a point-based positioning relative to the Line.
The height of the fixture, such as the text height of an exit sign."
Length measured as distance along the horizontal alignment of the segment."
It is the last-level equipment of the power distribution system, which is responsible for allocating a certain amount of power of the upper-level power to the nearest load.
Date on which the object was (or will be) removed. "
Indication of whether the cable tray has a cover (=TRUE) or not (= FALSE). By default, this value should be set to FALSE.."
A fitting that changes the physical size of the main route of the cable carrier."
Special type of a Cable route crossing a track or an obstacle in a certain height.
Mandatory limit values in sound absorption."
The diameter of the screen around a cable or bus segment (if present)."
Voltage of a cell or battery when the discharge current is zero [Source IEC 482-03-32]"
A passive device used to split the optical signal.
Precise alignment of the track (center top of rail) calculated in respect with speed, tonnage and capacity planned in the project.
Spatial relationship where one spatial element passes through another such as a road moving through a tunnel.
Number of carrier segments (tray, ladder etc.) that are vertically stacked (vertical is measured as the z-axis of the local coordinate system of the carrier segment)."
The cabinet is used for placing power supply equipment
Sequence of sleepers within the track panel &lt;OR&gt; to Position"
For a NONLINEAR horizontal segment type the radius of the curve at the end point. If the radius is 0 it shall be interpreted as INFINITE. Positive values imply a CCW direction whereas negative CW."
Gravel/âdirtâ; wood, asphalt, permanent way slabs, concrete, grass"
Indicates the damping ratio of the device."
The cabinet is used for placing signaling total wiring device
Are the turnout/crossing curved? No; yes, steadily; yes, clothoid"
Core maintain given properties/functions over a given (tested) time and conditions. According to (IEC) standard."
The thickness of the chamber base construction NOTE: It is assumed that chamber base will be constructed at a single thickness."
Type of material from which the conductor is constructed."
measured from the upper edge of the sleeper to the subgrade. Replaced the ballast bed size as of release 1/2016. / [cm]"
The milling plant where the rail was milled (manufactured)."
The width of the formed space in the duct."
Indication of the shape of the conductor."
Signs and signal for electrical protection and traction power equipement identification
Elevation in Z of the start point relative to the IfcAlignment coordinate system.\X\0D > NOTE&nbsp; It is strongly advised to not offset the IfcAlignment coordinate system from the project engineering coordinate system."
Indoor space that is reserved to install telecom equipment
Box for optical cable and cable connection
The box is used for optical cable connection (it has protection and shielding electromagnetic interference function.)
An interface of an active telecom equipment, used for data input or output. It is a subtype of connection interface.
Electric conductor of an OCL with which the current collectors make contact. Carries the electricity which is supplied to the train by its pantograph. (IEC 60050-811-33-15/UIC R 791-2006)
New in Version 1.5 Result of Rom workshop. Contained physical objects come from common schema (foundation layer, barrier layer, ...)
Indicates whether the chamber has steps (TRUE) or not (FALSE)."
It is set at the boundary of a track circuit to achieve electrical insulation with an adjacent rail. It can be "mechanical" insulation or "electrical" insulation.
A passive element which houses and protects Telecom equipments
Indicates the conductor diameter. It is only used for twisted and untwisted wire pair."
The LEU is the interface between the Eurobalise and interlocking. The LEU acquires the information from the interlocking, and in concordance with the lineside signalling (if available) sends the appropriate information (called a 'telegram') to the Eurobalises, which in turn send it to the train onboard sYstem.
A RoadPart providing at-grade junction between Segments belonging to two or more Roads. NOTE Grade-separated junctions are handled by aggregating of RoadParts (Segments and Junctions), and refencing other types of Facility (Bridges).
A self contained element of a cable that comprises one or more conductors and sheathing.The core of one lead is normally single wired or multiwired which are intertwined."
Telecom copper symmetric pair cable, a subtype of copper cable, is a copper cable with a variable number of copper twisted symmetric pair conductors used to transmit data by means of electrical signals.
Is the sleeper electrically insulated due to its design or the running rails? Yes/no"
Descriptive name of the railway crossing: route/road name"
The purpose of usage of the cess between rails, e.g. maintenance, rescue services."
The length of the chamber access cover or, where the plan shape of the cover is circular, the radius."
Indicates number of relays used for preventing over current."
A track node is a point object and represents a track branching (simple points, symmetric points, ...) or a track end (track ends, open track ends): Branches are those points in the track network where trains have exactly two options for further travel. Track ends are those points in the track network where the track physically ends or where the continuation is no longer to be mapped in the system.
The voltage that a device is designed to handle."
Indicates whether the element is adjustable or not."
The maximum voltage drop across the circuit that must not be exceeded. There are two voltage drop limit settings that may be applied; one for sub-main circuits, and one in each Distribution Board or Consumer Unit for final circuits connected to that board. The settings should limit the overall voltage drop to the required level. Default settings of 1.5% for sub-main circuits and 2.5% for final circuits, giving an overall limit of 4% may be applied. NOTE: This value may also be specified as a constraint within an IFC model if required but is included within the property set at this stage pending implementation of the required capabilities within software applications."
Insure the function of holding registration component in tunnel context.
The maximum allowed current that a device is certified to handle."
Vertical alignment segment with constant gradient."
Alignment of the contact line based on the track LRS and calculated with external constraints (bridge / tunnel crossing).
Substation the main function of which is to supply an electric traction system.(IEC 60050-811-36-02)
Housing is a generic class to be used by various elements/installations which can be placed in a structure for protection (metal or concrete boxes etc). The Shelter/Housing describes the type of protection and its location.
Number of overlapping spans in the overhead contactline system."
The Mobile-services Switching Centre (MSC) constitutes the interface between the radio system and the fixed networks. It is an exchange which performs all the switching and signalling functions for mobile station located in a geographical area designated as the MSC area. In order to obtain radio coverage of a given geographical area a number of base stations are normally required; i.e. each MSC would thus have to interface several base stations. In addition, several MSCs may be required to cover a country.
Vertical distance between the main catenary wire and the contact wire measured at a support point."
Proposal SNCF: Add width, GoToMeeting 22.7.2019"
Reference to external information source about installation or construction plan of the element."
Manhole for inspection of cable routes under the earth.
Date on which the check rail was (or will be) put into operation."
The information for failure description."
An identifier is an alphanumeric string which allows an individual thing to be identified
Number of corresponding installation plans"
It is installed at the end of cable to connect signal equipment.
For data ports, identifies the protocols used as defined by the Open System Interconnection (OSI) Basic Reference Model (ISO 7498). Layers include: 1. Physical; 2. DataLink; 3. Network; 4. Transport; 5. Session; 6. Presentation; 7. Application. Example: 3:IP, 4:TCP, 5:HTTP"
The MSC Server mainly comprises the call control (CC) and mobility control parts of an MSC. An MSC Server and a CS-MGW make up the full functionality of an MSC. The MSC Server is responsible for the control of mobile originated and mobile terminated CC CS Domain calls. It terminates the user-network signalling and translates it into the relevant network &#8211; network signalling. The MSC Server also contains a VLR to hold the mobile subscriber's service data and CAMEL related data.
Device for detecting the descent on the track of obstacles such as vehicles
Indication of whether the welded joint lies to the left or the right in the track edge direction"
Geometric primitive for transition curves. Attributes are defined in the class "Alignment Horizontal Segment" except the type of transition curve and initial and final radius..
When the input side voltage changes from the lowest allowable input value to the specified maximum value, the relative change value of the output voltage is the percentage of the rated output voltage."
Cabinet for different low voltage services (signaling, telecom..)
Type of connection, material, type of screw, adhesion; emergency bond yes/no; speed restriction"
Indicates the types or purposes of workstations and their number in the equipment. The defined purpose can be e.g. ''Diagnostic and maintenance'', ''Traffic and electric traction'', etc."
Indicates the range of wind speed the sensor can monitor."
Information about how the rail is installed with regard to welds and joints (Needed for maintenance)"
An eNB is a logical network component which serves one or more E-UTRAN cells. It is the hardware connected to the EPC (Evolved Packet Core), more specifically to the MME (Mobility Management Entity), which communicates directly with UEs (User Equipment) in wireless way. On the basis of the original functions of Node B, eNB added the physical layer, MAC layer, RRC, scheduling, access control, load bearing control, mobility management and wireless resource management of adjacent cells of RNC, providing functions equivalent to the original RLC/MAC/PHY and RRC layer.
Usage of the railwaycrossing by cars during a day / [car(s)/day]"
The radius of the stock rail bend defined as design parameter."
The voltage levels for which the data of the instance is valid. More than one value may be selected in the enumeration."
Indicates operation of emergency stop switch."
Nominal distance from the top of the rail to the lower face of the contact wire, measured perpendicular to the track."
Remote control & display termination of TDCS
TDCSèṡçẀæ§æẅçṠçḋŸ TDCS remote control system provides operator with control and display equipment, generally including display, mouse, keyboard, etc.
Indicates whether the on-site control unit collects information on snow depth."
Value of the cant right at the end of the segment in [mm]"
Enable to know what orientation inside blade have"
Class for grouping a set of discretized points. Each point set represents a track axis alignment. The alignment curve is a non-parameterized space curve that follows the ordered sequence of discretized points by straight lines (or splines) between consecutive points. This is an alternative representation the geometry of any track section described in the parameterized description.
Equipment provided to deter entry to a restricted area, structure or building by an unauthorized person.
Indicates the tolerance of the transport equipment chromatic dispersion. The value is defined by picosecond per nanometer (ps/nm)."
A device used for telephone exchange, can be used for legacy telephone or IP telephone.
Sequence which gives the sorting of the segments from a track LRS "
Nominal diameter or width of the tubes in the tube bundle."
Indicates the polarization mode of antenna."
In a substation, a transformer intended to provide supply to the auxiliary equipment (IEC 60050-605-02-46)
The ratio of wire tension to tensioner weight."
Optical fiber patch cord, a subtype of optical fiber cable, is an optical fiber cable capped at either end with connectors that allow it to be rapidly and conveniently connected to other cable or to distribution panels.
Indication of which kind of rail pads have been installed"
An IfcPositiveLengthMeasure is a length measure that is greater than zero.
(EN 13481-1) : Rail laid close to the gauge face of a running rail which takes part in lateral guidance of the wheel and prevents derailment in small radius curved track and switches and crossings.
A control element at which information that is available elsewhere is repeated or ''mimicked''."
The SGSN is a component of the GPRS core network. It is the GPRS support node of Mobile Station (MS) service, and it can achieve mobility management and packet routing and transfer. The location register function in the SGSN stores subscription information and location information for each subscriber registered in the SGSN.
Base Station Controller (BSC) is a network component in the PLMN with the functions for control of one or more BTS. As the control part of BSS, BSC is responsible for the management of various interfaces, the management of wireless resources and wireless parameters, the signalling processing of call establishment and the channel allocation in the cell.
Indicates the highest permissible load capacity."
The overall diameter of a core (maximun space used)."
Abstract, common ancestor of all Signalling elements.
The current that is going to be transformed and that runs into the transformer on the primary side."
Fastening device that mechanically joins or affixes two or more objects together for OCS equipement.
Device attached to the rear end of the last vehicle of a train acting on a fixed equipment to give an indication that the train is complete.
&lt;OR&gt; zu Sequenz &lt;OR&gt; to Sequence "
Date on which the track panel was installed."
Low frog &#8211; high frog (wheel runs on wheel flange (tram))"
A Vehicle stop is a (normally fixed) installation at the end of the track which stops any vehicle movement (e.g. buffer stop, sand hump etc.).
Indicates the minimum optical signal to noise ratio of the transport equipment."
Panel or interface for engineers to control the equipment.
The frog in a set of turnout in the turnout catalogue can be straight or bent. This will be marked here."
Holds the elements responsible for the mooring Space where the catenary system will be moor to the ground. The element present in this spatial structure are use for the same fonction : keep good mechanichal tension into all Overhead line Cable
Reference to which track panel or Turnout panel the rail lies."
Linear Reference System based on the catenary Alignment and used to precisely specify the place of real contact line depending the mast implementation.
Type of sleeper. This is determined by its material and structural properties/geometry"
Indicates whether the surface is galling or not."
Hollow, cylindrical body, usually of circular cross section, and of limited diameter, which is small in proportion to its length Note 1 &#8211; The external diameter is typically less than some hundred millimetres. Note 2 &#8211; In North America tubing usually designates a flexible tube. See also 212-15-06, sleeving. (IEC 60050-212-15-04)
overlaps where the two Overhead line systems are kept apart
Sensor which detects the passage of a wheel. A wheel detector can be used as part of an axle counter or as a treadle.
Indication of whether the object lies to the left or the right in the track edge direction"
The current that a fuse, circuit breaker, or other electrical apparatus is able to interrupt without being destroyed or causing an electric arc with unacceptable duration."
Indication of whether the turnout have flexible blades, articulated heel blade "
It is a set of pneumatic, mechanic or electric components causing a braking in the case the train is passing at danger.
Equipment installed on railway hump and classification yard (also named as shunting yard) to regulate the speed of rolling vehicles.
Indicates whether the element is accessible on foot (TRUE) or not (FALSE)."
Responsible for installation of the insulated joint"
Colour of the core (derived from IEC 60757). Note that the combined color ''GreenAndYellow'' shall be used only as Protective Earth (PE) conductors according to the requirements of IEC 60446."
A unitary control element combines a number of control components into a single product, such as a thermostat or humidistat. A unitary control element provides a housing for an aggregation of control or electrical distribution elements that, in combination, perform a singular (unitary) purpose. Each item in the aggregation may have its own geometric representation and location. (IFC4)
Method of installation of cable/conductor or other elements. Installation methods are typically defined by reference in standards such as IEC 60364-5-52, table 52A-1 or BS7671 Appendix 4 Table 4A1 etc. Selection of the value to be used should be determined from such a standard according to local usage."
Reference to which turnout panel belongs to which frog."
Indicates the core conductor diameter. It is only used for coaxial wire pair."
A device that stores and releases electrical energy.
A transformer intended to transmit an information signal to measuring instruments, meters and protective or control devices.(IEC 60050-321-01-01)
Include foundation, supporting elements and suspension.
Reference of corresponding installation plan of the turnout"
Passive electronic component of track circuit
Generic passive two-terminal electronic component. e.g. Tuning &amp; matching unit, Outdoor Compensation capacitor, Impedance transformer.
Concrete covered opening used to install cable junctions or reserve cable.
Gives the type of this Linear Referencing Method. > NOTE&nbsp;Definition according to ISO 19148:2021, LRMType. > NOTE&nbsp;Since the definition in ISO 19148:2021, LRMType is stereotyped as a CodeList it is open for user defined extensions. In this Pset this is handled by adding the enumeration constant _LRM_USERDEFINED_ and the additional property _UserDefinedLRMType_"
Component of a train protection system. It is an electrical contact placed between the rails which, in case of a danger situation, may cause a warning horn to beep in the driver's cab.
The Equipment Identity Register (EIR) in the GSM system is the logical entity which is responsible for storing in the network the International Mobile Equipment Identities (IMEIs), used in the GSM system.
In traction power system, overhead conductors besides overhead contact line include feeder line, reinforcing feeder, return line, positive feeder, protective wire, lightning protective wire, earth wire and so on.
The ratio of the actual primary current or voltage to the actual secondary current or voltage."
provides electrical insulation and protects the rail from abrasion. Installed between rail and sole plate. "
Flexible accessory or a part of a component placed around the cable to minimize flexing of the cable at the point of entry into the component.
Assembly consisting of: &#8211; one or more cores, &#8211; their individual covering(s) (if any), &#8211; assembly protection (if any), &#8211; protective covering(s) (if any). (IEC 60050-461-06-01)
A device that is used to 'fix' the parameter of electric energy, such as voltage loss, power factor and so on.
Indicates the radiation pattern of antenna."
1.A midpoint anchor structure is designed to resist the termination forces of the midpoint anchor in addition to other functions such as carrying cantilevers.(EN 50119) 2.The anchoring equipment near the middle of the mechanical section, which prevents the OCL from making longitudinal movements.(UIC R 791-2006)
A device that ensures the routing of trackside telephone calls and communications.
Indicates the sampling frequency of the device."
Indicates whether the connection is done between rail with different height (TRUE) or with same height (FALSE)."
Sleeper contaminated, special disposal required yes/no"
Railway crossing covering for roads (secured/unsecured). Superstructure type also possible with ballast. Covering can be driven on in the transverse direction. Usually used in public areas. Often entails changes to the stiffness of the superstructure/substructure.
Defines the kind of turnout heater installed."
&lt;OR&gt; Distance to start of track edge / [m]"
Copper cable is a subtype of telecom cable, with a variable number of copper coaxial conductors or pair conductors used to transmit data by means of electrical signals.
Indicates the degree of linearity of the earthquake sensor or accelerometer."
The current that a device is designed to handle."
Where is the check rail used? In switch, track dilatation, etc."
The designation of the standard applicable for the definition of the core used."
Self Extinguishing cable/core according to IEC 60332.1."
Indicates the dynamic range of the sensor."
The physical port connection subtype that further qualifies the ConnectionType. The following values are recommended: * ACPLUG: A, B, C, D, E, F, EF, G, H, I, J, K, L, M * DIN: Mini3P, Mini4P, Mini5P, Mini6P, Mini7P, Mini8P, Mini9P * DSub: DA15, DB25, DC37, DD50, DE9, DE15 * EIAJ: RC5720 * HDMI: A, B, C * RADIO: IEEE802.11g, IEEE802.11n * RJ: 4P4C, 6P2C, 8P8C * SOCKET: E-11, E-12, E-14, E-17, E-26, E-27, E-39, E-40 * TRS: TS_Mini, TS_SubMini, TRS_Mini, TRS_SubMini"
Optional name to further specify the reference. It can provide a human readable identifier (which does not necessarily need to have a counterpart in the internal structure of the document)."
çṠṀæĊçṠçḋŸ It is the terminal equipment for system maintenance
Plain track super structure is one subtype of track part without turnout panel or dilatation panel.
A stationary device with two or more windings, in order to transmit electrical energy, converts the AC voltage and current of one system to the AC voltage and current of another system at the same frequency by electromagnetic induction.(GB 1094, IEC 60076) electric energy converter without moving parts that changes voltages and currents associated with electric energy without change of frequency.(IEC 60050)
If the points are junction points, add as necessary: Siding operator/cost-sharing factor"
Indication of whether the rail lies to the left or right in the track panel direction"
The incline of the turnout end defines the angle Îḟ between the main track and deflection."
Similar to the elements specified in the turnout catalogue, specifies the design of the dilatation device, its basic structure (components used and how they are arranged)."
It is a cabinet for storing interlocking system monitoring equipment.
Cabinet of interlocking system monitoring equipment
Parameter which defines which axis is used for rotation. Possible values are: Center line Lower rail User defined "
Internal referencing in turnout panel in acc. with installation plan"
Underground special channel/pipe for laying cables.
Indicates the working state of device or system."
It indicates the wire-to-ground (metal sheath) insulation voltage or the insulation voltage between the wires."
Indicates the wind angle range the sensor can monitor."
Grounding terminal provided on equipment or on a device and intended for the electric connection with the earthing arrangement.
Gateway is a networking hardware that provides interoperability between networks, i.e. it allows data to flow from one discrete network to another. It can represent all types of equipment which permits interworking between distinct networks.
Indicates the range of indication rod movement."
Type of road signaling system: none/level crossing, warning signs, flashing lights, barriers"
Quantity characterizing the variation with thermodynamic temperature T of the distance l between two points of a body, under given conditions (IEC 113-04-27). The ratio is defined per Kelvin."
Traction force of the point machine in turnout conversion."
Usually at ballast level. Outside of structure gauge. Function: walkway, service path. Access to track.
For ports distributing power, indicates function of the conductors to which the load is connected."
Length, width, hight / [m] / t.b.d. ask CRBIM@D&#252;sseldorf"
The vertical alignment is composed of geometric segments with the following three geometry types: Straight line (= constant gradient) Segment arc Transition curves The tolerance limits for the vertical offset and angle errors (= abrupt change of the gradient) must be kept to, otherwise the chain will be deemed to be broken. The vertical alignment can either follow the track axis or the lower or the upper rail.
Code indicating the encapsulation technology which has been applied in an electric, electronic or electromechanical component."
Date on which the check rail was (or will be) installed."
Mechanical assembly with e.g. fishplates to join two rail ends with optional functions (insulation or expansion capacity).
Indicates the current measured temperature."
Object used for earthing. Installed in track slab or concrete slab. Welded to reinforcing bar in track slab or concrete slab.
Is the banquet element accessible by vehicle? yes/no (type of accessibility where applicable)"
An IfcText is an alphanumeric string of characters which is intended to be read and understood by a human being
The cabinet is used for placing external information providing server
Cabinet of external information providing server
Buffer, object at end of track. Function: prevents driving over; can be fixed on rails or the track panel - Can also be a natural element (rock, sand).
A system sending command to control and monitor the switches and circuit breakers or systems directly or not connected (e.g. via wires) within the traction power system remotly.
The Viennese Bend (R) is an innovative track geometry transition element. Instead of analyzing the vehicle movement at the track plane the optimization efforts target a gravity center line at a defined height above the rails. As a consequence the path of the horizontal alignment center line is also influenced by the cant layout. The first part of the curvature formula is assembled from the basic function like the other transition bends. The additional term contains the bank angle "&psi;" and the gravity center line height "h" and is unique to the Viennes Bend (R). This term causes a small movement contrary to the main direction in the x,y layout. **Curvature formula** !["Viennese bend (R) transition segment"](../../figures/ifcalignmenthorizontalsegmenttypeenum-viennesebend.png "Figure 1 &mdash; Curvature for horizontal Viennese bend (R) transition segment")"
Cabinet of repeating & query terminal server
The cabinet is used for placing repeating & query terminal server
Spatial relationship where one spatial element passes over another such as a road passing over a bridge
Power supply interface of a telecom active equipment, using which the equipment can be powered through power supply cables.
Optical adapter is used to convert one type of optical port to another type of optical port.
Construction, usually of concrete or steel, completely or partly buried in the ground on which the support is mounted. The foundation must provide stability to all loads borne by the support.(UIC R 791-2006)
Distance along the horizontal alignment, measured along the _IfcAlignment2DHorizontal_ given in the length unit of the global _IfcUnitAssignment_."
Regular combined rail/road traffic yes/no"
The standardised length of rail supplied from the manufacturer."
Indicates the wheel diameter requirement for the derailer."
Sequence of the sleeper within the track panel."
A list of the available usages for selector switches from which that required may be selected."
Indicates the maximum allowable train speed for the derailer."
Indicates the type of foreign object detection sensor."
A part connecting two rod or bars, such as reinforcement bars."
Non linear cant variation according to Bloss curve base formula. **Base formula (Cant)** !["Bloss cant transition segment"](../../figures/ifcalignmentcantsegmenttypeenum-blosscurve.png "Figure 1 &mdash; Cant for Bloss curve transition segment")"
Indicates the number of vertical units occupied by the equipment."
A concrete/metallic/plastic duct that contains tubes and/or cables.
Indicates whether the on-site control unit collects information on rain."
Clear span for this object. The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence. For geometry editing applications, like CAD: this value should be write-only."
Apparatus in the track by means of which data are transmitted to a train to update the train-borne automatic protection equipment regarding the track and signal conditions of the line ahead. [source: IEC 60050-821]
The resistance under direct current and 20 degrees centigrade."
Does the blade always return to the same position (trailable turnout)"
reference to external data/information source, e.g. construction plan"
Grounding grid consisting of horizontal grounding bodies.
Length dilatation admited by the element."
Distinguishes between different structures of an optical fiber cable."
Date on which the check rail was (or will be) removed."
To my knowledge there are different types, adjustable"
Automatic tensioner attached to a mast to ensure constant tension in conductors or in cross-span registration cables by means of springs.(UIC R 791-2006)
Vertical alignment segment where the derivative of vertical angle with respect to sloping length along the track (3D length) is constant. **Vertical Curvature** !["Vertical circular arc segment"](../../figures/ifcalignmentverticalsegmenttypeenum-arc_curvature.png "Figure 1 &mdash; Curvature for vertical circular arc segment") **Segment length** !["Vertical circular arc segment"](../../figures/ifcalignmentverticalsegmenttypeenum-arc_length.png "Figure 2 &mdash; Length for vertical circular arc segment") **Distance between point on segment to tangent** !["Vertical circular arc segment"](../../figures/ifcalignmentverticalsegmenttypeenum-arc_z_s.png "Figure 3 &mdash; Distance of point an vertical circular arc segment to tangent")"
Device for detecting the descent on the track of obstacles such as stones.
Distance between the external rail and the barrier used to prevent the passage of vehicles during the transit of the train / [m]"
Indicates the type of the overhead contact system (OCS) mechanical fastener."
A device that can convert electric signal to optical signal at the sender, and convert optical signal to electric signal at the receiver.
A single linear element within a cable or an exposed wire (such as for grounding) with the specific purpose to lead electric current, data, or a telecommunications signal."
Indicates the type of antenna integrated in the device."
The max voltage for normal insulation operation."
Cabinet for communication preprocessor of monitoring system
It is a cabinet for storing communication preprocessor of monitoring system.
Equipment used to charge the battery, which is storing electric energy for substation.
Vertical alignment segment where the derivative of gradient with respect to distance along is constant. **general equation of the parabolic arc segment** !["Vertical parabolic arc segment"](../../figures/ifcalignmentverticalsegmenttypeenum-parabola1.png "Figure 1 &mdash; general equation of the parabolic arc segment") **gradient (slope) of this curve at any point (first derivative)** !["Vertical parabolic arc segment"](../../figures/ifcalignmentverticalsegmenttypeenum-parabola2.png "Figure 2 &mdash; gradient (slope) of the parabolic arc segment at any point") **variation of curvature** !["Vertical parabolic arc segment"](../../figures/ifcalignmentverticalsegmenttypeenum-parabola3.png "Figure 3 &mdash; the rate of change of gradient of the parabolic arc segment is constant")"
Total number of twisted wire pairs in copper pair cables."
Requirements from road/railway crossing"
Indicates the transmission loss of the leaky coaxial cable (radiating cable)."
Electrical conductor that makes a common connection between several electrical circuits. Properties of a busbar are the same as those of a cable segment and are captured by the cable segment property set."
Cable used to connect between rail and return line.
Indicates whether the infrastructure element has drainage embedded or not."
1. An external locking device is a mechanical device that locks the switch machine in a certain position from the outside . 2. The hook type external locking device locks the basic rail and the turnout sharp, the movable rail and the wing rail safely, and ensures the safety, stability and reliability of the switch under the lock state (in the process of high-speed and heavy-duty train running).
An arbitrary correction factor that may be applied by the user."
Geometric primitive for Arc of circle. Attributes are defined in the class "Alignment Horizontal Segment" except the radius..
Indicates the colour B- end of connector."
Maximum noise emissions limit at this location."
The wind speed value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
The highest and lowest local ambient temperature likely to be encountered."
Indicates the total number of coaxial pairs in the coaxial cable."
The cabinet is used for placing interface network device
Metallic framed structure used to hold antennas or cables.
Indicates whether the turnstile is bidirectional."
Identifies the predefined types of cable carrier fitting from which the type required may be set."
Building on track side dedicated to railways operation.
Locking force of the point machine motor."
Nominal installation depth underground."
1-sigma standard deviation [m] of the point elevation. The value 0 indicates that the point was calculated and not measured. Remark: The 3D Standard deviation of a point can be calculated from the standard deviation horizontal and vertical. "
a wire or combination of wires not insulated from one another, suitable for carrying an electric current.(IEC 60050-466-01-15)
Indicates the propagation speed coefficient."
"twin sleeper"-type or "between sleepers"-type"
Surge arrestor: Device intended to protect the electrical apparatus from high transient overvoltage and to limit the duration and amplitude of the follow-on current.(UIC R 791-2006)
What kind of turnout heater is installed (electric,gas, nothing)"
A terminal device that realizes bidirectional voice communication by means of electrical signals.
This class collects all the required accessories in cabling work.
Design, type of fastening, profile height"
Number of screws/connections on each side / [screw(s)]"
Spatial structure to hold track related element
1.Hinged arm used to hold the contact wire in its correct across-track position.(IEC 60050-811-33-37) 2.Used to connect the cantilever with the contact wire clip.
Indicates the number of vertical units."
This Linear Reference System is based on the railway alignment and provide a gross, human useful reference system to place some infrastructures (station, bridges, tunnel) and the tracks.
Indicates whether the sleeper is contaminated and requires special disposal or not."
Non linear cant variation according to Viennese bend base formula. The determining influence of the cant variation for the curve in the horizontal Cartesian 2D coordinate space is unique within all other transition curves. .**Base formula (Cant)** !["Viennese Bend(R) cant transition segment"](../../figures/ifcalignmentcantsegmenttypeenum-viennesebend.png "Figure 1 &mdash; Cant for Viennese Bend(R) transition segment")"
Type of crossing: Private footpath, public, level crossing, cycle path, side road, main road, train path, motorway"
Indicates whether the transport equipment can be upgraded or not."
Indication of kilometers at the beginning of the rack-rail section (in the kilometerage direction) / [m]"
The maximum short circuit temperature at which a cable or bus is certified to operate."
Indicates the width of the wide channel."
A doubly pointed piece of metal that is hammered into materials as a fastener."
The material from which the base of the chamber is constructed. NOTE: It is assumed that chamber base will be constructed of a single material."
Provide a safe transition from multi-fiber cable units to individual fibers.
This is the zone (non-strictly reserved space) where any signalling equipment can be installed. It has shape, and this shape is flexible.
Grounding Composed of nonmetallic minerals with good conductivity and stability.
Type of ballast, e.g. first to third quality, standard ballast, etc."
Length measured for the right cant at the beginning of the segment."
Reference to which switch panel the blade belongs to. Internal referencing"
Indicates the communication standard supported by the physical wired communication port."
The maximum bending radius that the cable could withstand."
A fiber segment is an individual optical fiber used in telecommunication systems to transmit data by means of optical signals."
Railway electrical distribution network used to provide energy for rolling stock. (IEC 60050-811-36-21/CENELEC - EN 50122-1) Note 1 to entry: The system includes &#8226; contact line systems, &#8226; return circuit of electric traction systems, &#8226; running rails of non-electric traction systems, which are in the vicinity of, and conductively connected to the running rails of an electric traction system, &#8226; electrical installations, which are supplied from contact lines either directly or via a transformer, &#8226; electrical installations in substations, which are utilized solely for distribution of power directly to the contact line, &#8226; electrical installations of switching stations. (IEC 62128-1:2013, 3.4.1)
Equipment installed on track of freight yard to measure the weight of vehicles.
(EN16431) : Sleepers and bearers with hollow structure, with support for Vignole rails on ballasted or ballastless track, including the fastenings systems and all components, with a minimum of 50 % of the cross sectional-area hollow throughout its length.
A phone specifically provided for making calls to emergency services in tunnels.
Requirements from traffic/axle loads, degree of permanent way dimensioning"
A set of nominal currents in [A] for which the data of this instance is valid. At least one value shall be provided. Any value in the set shall not exceed the value of the UltimateRatedCurrent associated with the same breaker unit."
Geometric primitive for Arc of circle. Attributes are defined in the class "Alignment Vertical Segment" except the radius..
Indication of whether the cable occurrences are mounted horizontally (= TRUE) or vertically (= FALSE)."
IfcReal is a defined type of simple data type REAL
Zone witch contain the facilities on the over head line to transfer the current from the substation
With which method the discretized points where defined: straight lines (polynom) splines (type of spline needed) user defined "
Length measured for the right cant at the end of the segment."
Alle Typen sind kombinierbar: "AND"-Selektion
Insure the function of holding registration component in specific condition like tunel or under-bridge.
Abstracted At DataType used to gather common properties used by all usage of the At (point-based type) positioning.
It is a cabinet for storing blocks unit combination and relays.
Output is proportional to the control error and optionally time integral and derivative."
Indicates the polarization mode dispersion tolerance of the transport equipment. It is usually measured by picosecond."
Indicates whether the foundation is reinforced (TRUE) or not (FALSE)."
Mechanical device for release of several dependent keys by a main key.
Perpendicular to the azimuth of the horizontal alignment curve."
Indicates the number of track centers running over the sleepers."
Inherent bumper dimensions/design property / [m]"
A level crossing is an intersection where a railway line crosses a road or path at the same level. The purpose of LCSE is to prevent vehicles or pedestrians from crossing the railway after the train has been notified. It includes: LC Traffic signal, LC Traffic sign, LC Barrier, LC Engine, Obstacle detector, etc.
Type of insulation, material, type of screw, adhesion"
Temporary mechanical connection between 2 rails or reinforcement of one rail
Enumeration that identifies electric actuator as defined by its operational principle."
Stud shear connectors are cylindrical fastening parts with a head on one side. On the other side they are welded on steel members for the use in composite steel and concrete structures."
Distance of the axis of the right walkside from the inner edge of the nearest rail (Minimum value) / [m]"
Identifier of the corresponding installation plan."
The number of wires used in the element."
A thin pointed piece of metal that is hammered into materials as a fastener."
Indicates the purpose of using hollow sleeper. The possible value can be eg. cable trenching, protection of turnout mechanism, etc."
It is a cabinet for storing frequency equipment
Corresponding type of turnout (single turnout double-slip turnout)"
Internal referencing in turnout panel (or dilatation panel) in acc. with installation plan"
Location in the Turnout / dilatation panel"
A place near a road providing services to road users and their vehicles. NOTE Definition from ISO6707-1: land with access to and from a highway used for the provision of certain amenities and services.
Gradient of the tangent of the vertical segment at the start point. It is provided as a ratio measure. The ratio is percentage/100 (0.1 is equal to 10%). It has a theoretical range of -\X2\221E\X0\ < n < \X2\221E\X0\ using a ratio measure. The equivalent range measured in degree is -90\S\0 < n < 90\S\0.\X\0D > NOTE&nbsp; For practical application of start gradient, the range of the ratio measure should be within the limits of -1 \X2\2264\X0\ n \X2\2264\X0\ 1 (equivalent in degree -45\S\0 \X2\2264\X0\ n \X2\2264\X0\ 45\S\0). However larger limits might apply for particular usages.\X\0D \X\0D Positive gradient means an increasing height at the start (or uphill), a negative gradient means decreasing height at the start (or downhill)."
Within what radius is the stock rail bent? / [m]"
Overhead line infrastructure reservation
Equipment to support ContactLine, Feeder or Earthwire
Indicates the average power of a single channel of the transport equipment."
Type of the check rail. Check rail types enumerated in this property are defined based on EN 13674."
Where does the ballast come from &#8211; quarry"
An _IfcRatioMeasure_ is the value of the relation between two physical quantities that are of the same kind. > NOTE&nbsp; Input given in percent is to be divided by 100% when stored as an _IfcRatioMeasure_. For example, 25% becomes 0.25. Type: REAL > NOTE&nbsp; Type adapted from **ratio_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1. bSI Documentation
Indicates the antenna gain, which is a ratio of the power transmitted by an antenna in a specific direction compared to an isotropic antenna."
In the geometric perspective, a clothoid denotes a connection between two points where the radius of curvature changes along the segment at a constant rate. The clothoid was an early achievement of geometry, also known as Euler''s spiral or Cornu''s spiral. It became very popular in road and rail design even before the widespread availability of computers because of the availability of tabulations of the normalized clothoid. Proper application of the so called clothoid constant provided fast solutions for all relevant parameters necessary to integrate clothoid segments between two consecutive segments with constant curvature. In most cases the clothoid smooths the curvature between a straight line and a ciruclar arc. In the dynamic perspective, it denotes a segment with constant rate of lateral acceleration change induced by the curvature. The kinematic properties of the clothoid both reduce the exerted forces on the track by a train, improve the travel experience of train passengers and also reduce the stress of a car driver by avoiding sudden movements of the steering wheel. The kinematic advantages of the clothoid as a smoothing segment are true also for all the other transition bends currently in use. **Base formula (Curvature)** !["Clothoid transition segment"](../../figures/ifcalignmenthorizontalsegmenttypeenum-clothoid.png "Figure 1 &mdash; Curvature for horizontal Clothoid transition segment")"
The area that is covered by the sensor (typically measured as a circle whose center is at the location of the sensor)."
Indicates operation mode corresponding to Pset_UnitaryControlTypeCommon.Mode. For example, ''HEAT'', ''COOL'', ''AUTO''."
Contact line placed above the upper limit of the vehicle gauge and supplying vehicles with electrical energy through pantographs.(UIC R 791-2006)
Space that is reserved for laying telecom cables.
It is a cabinet for storing application server of monitoring system.
Cabinet for application server of monitoring system
The cabinet is used for placing distributing terminal board
Alignment stop Special functional installations such as axle-gauge changeover point; transporter wagon loading point.
Fire rating for this object. It is given according to the national fire safety classification."
Application within track or turnout panel, internal referencing for turnout in accordance with installation plan where applicable"
Parts which support the conductors and the associated insulators of an OCL.(UIC R 791-2006/IEC 60050-811-33-19)
The thickness of the duct wall construction NOTE: It is assumed that chamber walls will be constructed at a single thickness."
Indicates the number of tracks which OCS supporting system crosses."
The temperature range in which the device operates normally."
Equipement and system dedicated to environnement protection.
Maximum tolerable vibration level of the device."
A device used to install a point machine and to connect the point machine to a turnout components (to fix the point machine and connect it to the turnout).
Type, design, characteristics, material"
Gives the user defined type of this Linear Referencing Method when property _LRMType_ is _LRM_USERDEFINED_."
Indicates the ratio of tickets being stuck or jammed in the appliance."
Self-acting artificial system the behaviour of which is governed either in a stepwise manner by given decision rules or continuously in time by defined relationships, while the outputvariables of which are created from its input and state variables.(IEC 60050-351-42-32)
1. Housing for placing equipment/objects and having protective functions. 2. It is used to place outdoor signal devices/objects, and realize wiring, electrical connection and protection of the device (with certain protection functions).
Allowable maximum and minimum working pressure (relative to ambient pressure)."
Foreign object dual power network sensor
Device which can alarm when foreign objects shock and break the dual power network.
A measure of the Young''s modulus of elasticity of the material."
Level of the lowest part of the cross section as measured from ground level."
a series of linked metal rings used for fastening or securing something, or for pulling loads."
System that prevents rails from tipping and twisting.
A type of building or a part of a building where vehicles can be parked on one or more storeys. Also: Multi-story car park. NOTE Definition from ISO 6707-1: building in which motor vehicles are parked on different storeys
The movement of the bar that pulls the point of a turnout."
Terminal equipment for connecting fiber optic trunks.
An land area intended for parking vehicles usually divided into individual spaces,. Also: Vehicle park or Parking area. NOTE Definition from ISO6707-1: area that is prepared and intended for the parking of a number of vehicles.
Indicates the type of transport equipment assembly."
The material from which the wall of the chamber is constructed. NOTE: It is assumed that chamber walls will be constructed of a single material."
Abstract class as a placeholder for railway cant or road superelevation.
Design/structure of the rack-rail entrance at the start of the section"
Geometric primitive for transition curves. Attributes are defined in the class "Alignment Vertical Segment" except the type of transition curve and initial and final radius..
Indication of whether the frog moveable is dynamic or rigid."
Track concrete slab is an integral reinforced concrete layer cast in-situ, in which bi-block sleepers, concrete turnout sleepers or other sleepers are embedded. Track concrete slab shall only appear in ballastless track structures.
Metallic or concrete pole used to hold up cables or antennas.
The horizontal alignment is composed of geometric segments with the following three geometry types: straight line arc of a circle transition curve The horizontal alignment delivers the metric for the linear reference system used to position the vertical alignment segments and the cant segments. The tolerance limits for lengthwise, crosswise and angle errors must be kept. Otherwise the chain will not be deemed to be linked together. If no absolute coordinates are known, the initial coordinates of the geometric elements are entered as (0,0) or using less precise coordinates (graphical coordinates) in the geodetic reference system. The type of geodetic reference system and/or the map projection must be given. The measurement respectively the calculation date must be stated.
Telecom Equipment Element refers to the elementary component of the Telecom active Equipments which can not decomposed (breaks down) into other telecom equipments. It represents only the equipment sub-units (e.g. Connection interface; chassis; Cooling fan; etc. )
An IfcNumericMeasure is the numeric value of a physical quantity.
Does the track panel have any other special equipment? "
The power loss in [W] of the fuse when the nominal current is flowing through the fuse."
Records telephone calls between the railway telephony operators. It also provides the function of archiving and immediate replay. It can support the IP, SIP and RTP protocols.
Indicates the type of security protocols that can be used in the access point to protect the wireless network."
Device for stopping any vehicle movement permanently.
An equipment for ticket inspection and processing. Passengers are allowed or forbidden to pass according to the validity of tickets.
New proposal M. Perrin for version 1.2 Conceptual object that represents a Line in the railway domain and hold the Railroads. Composed of railroads, may have common or railroad specific materials, subgrade, use footprint alignment.
A control element at which the detection of gas is annunciated."
It is a cabinet for storing electric control equipment.
Switching equipement used for traction power, which is usually composed by switch(s), cabinet (might be), instrument tranformer (might be), and other auxillary equipements.
Feeder is the radio-frequency transmission line interconnecting an antenna and a transmitter or receiver, it is a subtype of coaxial cable.
Indicates the type of railway communication terminal."
Length measured for the left cant at the beginning of the segment."
The cabinet is used for placing clock server
Track part is the basic volume object for all objects of track superstructure. It refers to a segment of track system engineering which is part of the track system and has a unique structural type and functional type.
Height of the guard strand placed to control the interference of the vehicle shapes with electric contact line / [m]"
Allows for the specification of constraints imposed by this Linear Referencing Method. For example, a Reference Post Linear Referencing Method may specify that referents be of type \X2\201C\X0\reference marker\X2\201D\X0\. > NOTE&nbsp;definition according to ISO 19148:2021"
Protection against electric shock for people and equipments.
Indicates the electrical cross capacity of the transport equipment."
The rate of temperature rise that is to be sensed as being hazardous."
A kind of optical transmission network connection equipment which is installed at user side.
Is it a connection between two different heights? Yes/no"
Total number of multi-mode fibers in the optical fiber cable."
Value of the cant left at the beginning of the segment in [mm]"
Synchronization Support Unit (Frequency).
The cabinet is used for placing application server
According to different electrical equipment and different power consumption, the AC power distribution panel generally controls the distribution cabinet by a branch switch consisting of a voltmeter, an ammeter, a switch (or an automatic switch), an insurance, a signal light, and a line.
Crossing angle: 0 &lt; 180 degrees / [deg]"
The distance between two conductive parts along a string stretched the shortest way between these conductive parts. (IEV ref 441-17-31)"
Redundant arrays of independent drives, used for data storage.
Indicates the user interface of the computer."
It is a cabinet for storing simulation network pannel equipment.
Cabinet of simulation network pannel equipment
If turnout is curved, the main branch radius of curvature."
It is a cabinet for storing the electronic terminal of the local interlocking system.
Cabinet of local interlocking system actuator
Indicates the measuring range of the earthquake sensor or accelerometer."
Abstract, common ancestor of all Signalling non-trackside elements.
1.It is an electromagnetic device that is remotely or automatically controlled to switch on the state of the circuit and converting other devices (such as converters, current circuit breakers) in the same circuit or different circuits. 2.Relays are usually used in automated control circuits. They are actually "automatic switches" that use small currents to control the operation of large currents. It can control multiple loops and multiple control objects, and can also control remote objects. It plays the role of automatic regulation, security protection, conversion circuit and so on in the circuit.
To supply electric traction system from high voltage.
This alignment represents the center of the railway. Needed for early design to place the railway in it surrounding.
A low impedance conductor to which several electric circuits can be separately connected.(IEC 60050-605-02-01)
Output is discrete value, can be one of three or more values."
Optical pigtail, a subtype of optical fiber cable, is a specific hardware connection used for cable termination. On a fiber pigtail, one end of the wire is simply exposed fiber and the other end has a pre-installed connector on it. Fiber pigtails are commonly spliced onto individual strands of a multi-fiber trunk cable.
A space that allows to access to the equipment from the right side. It is defined by the minimal distance that must be kept free in the right side of the equipement
Length of turnout tongue from point of turnout tongue / [m]"
Indicates the data connection type of the junction box e.g. copper pair, fiber or others."
Gives the name of this Linear Referencing Method, such as \X2\201C\X0\kilometre-point\X2\201D\X0\. > NOTE&nbsp;Definition according to ISO 19148:2021. > > NOTE&nbsp;Names of commonly used Linear Referencing Methods are included in ISO 19148, Annex C, along with recognized name aliases."
Indicates which type of stress is applied to the element."
Fixed device which, when placed on the rail, derails the wheels of a vehicle, and serves to protect a converging line. [source: IEC 60050-821]
A piece of sheet metal with punched points that overlaps the connected pieces and is pressed into their material."
Indicates whether the on-site control unit collects earthquake information."
A space that allows to access to the equipment from the top side. It is defined by the minimal distance that must be kept free in the top side of the equipement
A relay device used to observe the voltage level and disconnect the circuit from the supply if any variations are occurs from the standard range.
Indicates whether the chamber has a backdrop or tumbling bay (TRUE) or not (FALSE)."
The part of the actuating system to which an external actuating force is applied. (IEC-441-15-22) Used for operating the switches.
Additional information on the purpose of the shaft."
Assessment of the condition of the element at point of installation."
The Bloss transition is a more recent form of a high performance transition bend. Proposed in 1936. it is now in use in several railway networks. There is no established rough geometric approximation. >NOTE&nbsp;Further reading: Constantin Ciobanu, BLOSS TRANSITION \X2\2013\X0\ A SHORT DESIGN GUIDE **Base formula (Curvature)** !["Bloss curve transition segment"](../../figures/ifcalignmenthorizontalsegmenttypeenum-blosscurve.png "Figure 1 &mdash; Curvature for horizontal Bloss curve transition segment")"
A bar of metal, wood or other rigid substance, used to trigger or control a mechanical device (like a point or a derailer).
Provides phone communications between one or several interlocutors inside the office
Date on which the rail was (or will be) manufactured."
Output is programmable such as Discrete Digital Control (DDC)."
Specific types and fastening types? Height, tooth spacing"
Turnout panels can be placed in 2 mirror-symmetric directions in the field. To distinguish both ends of the turnout panel, a definition of an orientation system with respect to the panel is necessary. The orientation defines, if the panel is oriented in a way or opposite with respect to the direction of the alignment/stationing."
PCU performs some of the processing tasks of the BSC, but for packet data. It is responsible for data packet, wireless channel management, error sending detection and automatic retransmission.
Type of Steady Device: To indicate the mode of registration."
Sectioning point formed by insulators inserted in a continuous run of a contact line, with skids or similar devices to maintain continuous electrical contact with the current collector.(IEC 60050-811-36-15)
A train stop is a set of pneumatic, mechanic or electric components causing a breaking in the case the train is passing at danger. So this element belongs to the Intermittent Train Protection package of EULYNX model.
Indication of whether the busbar occurrences are routed horizontally (= TRUE) or vertically (= FALSE)."
Indicates the number of ports in the passive device that can be used to interconnect cables."
Indicates the usage of the data transmission unit. It can be used to transmit data for different types of sensors."
The core identification used Identifiers may be used such as by color (Black, Brown, Grey) or by number (1, 2, 3) or by IEC phase reference (L1, L2, L3) etc."
FEU is a computer interlocking execution representation circuit using full electronic circuits, replacing safe relay as the control unit circuit, combining with computer interlocking, completed at the end of the computer interlocking system of control and acquisition function, can realize monitoring and control of all kinds of point machine, signal, track circuit, block, level crossing, etc. FEU can consist of Signal module, turnout module, track module.
AC is used to record and store railway emergency call information.
Design/structure of the rack-rail exit at the end of the section"
Fitting attached to the earth or ground.
The length of the threaded part of the anchor bolt."
Mechanical connector used to terminate a fiber end point so as to allow mechanical connection to another connectorized fiber end point or to a connectorized telecom equipment port.
Cross section area of the phase(s) lead(s)."
Indicates whether the element has the ability to suppress an arc."
Indication of whether the retarder lies to the left or right in the track panel direction"
The description of Structure Composition"
Length of stock rail from point of turnout blade / [m]"
Building used to contain telecom equipment along trackside/outdoor.
&lt;OR&gt; X,Y,Z coordinates in case of track element is situated outside of edge"
Type of the driving device used for the turnout."
Indicates the type of snow depth meter."
Subtype of blade only used in half set of blades
Indicates the number of cantilevers in the OCS supporting system."
Telecom equipment that does not need power supply
Output increases or decreases at a constant or accelerating rate."
The remote control of a switch by electrical impulses.
A section of supply zone which can be energized by closing a feeder circuit breaker at the substation.
Measurement of the ratio of water vapor in the air."
Material of the covering, e.g. asphalt, paving stones, grass"
Signalling Indoor Equipment Placeholder (non-trackside)
This is the non-trackside zone (non-strictly reserved space) where any signalling equipment can be installed (e.g Rooms, Control Center). It has shape, and this shape is flexible (may change)
normalising temperature / [&#176;C]"
An _IfcPlaneAngleMeasure_ is the value of an angle in a plane. Usually measured in radian (rad, m/m = 1), but also grads may be used. The grad unit has to be declared as a conversion based unit based on radian unit. > NOTE&nbsp; _IfcPlaneAngleMeasure_ is used where angles need to be described to an accuracy of less than one degree and expressed as decimal parts of an angle. It is widely used for angular measurement except for situations where accuracy needs to be defined using arc measurement; for which purpose the _IfcCompoundPlaneAngleMeasure_ is provided. Type: REAL > NOTE&nbsp; Type adapted from **plane_angle_measure** defined in ISO 10303-41. > HISTORY&nbsp; New type in IFC1.5.1. bSI Documentation
Electric distribution board used to dispatch electric power.
Indicates the processing time of a ticket."
Indicates whether security equipment is checking the mechanical functionality of the rail joint."
(EN 13232-1-2004) movable machined rail, often of special section, but fixed and/or joined at the heel end to a rail to provide continuity of wheel support. The two switch rails in a set are the two inside rails. A switch rail is described as right or left hand according to whether it is part of a right hand or left hand half-set of switches.
Rigid cross span structures consist of bending resistant beams which are fixed onto the structures either by hinges or by bending resistant joints.(EN 50119) Support consisting of a transverse beam and masts situated on either side of tracks.(IEC 60050-811-33-38/UIC R 791-2006)
Track adjustment layer is a concrete layer or mortar layer cast or paved in-situ, which is used for supporting track slabs or track concrete slabs. Track adjustment layer shall only appear in ballastless track structures.
In the geometric perspective, it denotes a connection between two points that follows a circular path. In the dynamic perspective, it denotes a segment with constant lateral acceleration on the moving vehicle, i.e. constant curvature. **Base formula (Curvature) ** !["Circular arc segment"](../../figures/ifcalignmenthorizontalsegmenttypeenum-circulararc.png "Figure 1 &mdash; Curvature for horizontal circular segment")"
Device used to transfer data to on-site control unit, which can be fixed near the rain gauge, snow depth meter, foreign object dual power network sensor or earthquake accelerometer. The data are amplified and modulated, and then sent to the on-site unit.
Indicates whether the fiber has been assigned to some specific use."
Indicates the full scale output of the earthquake sensor or accelerometer."
The point machine is a device that can switch and lock the turnout and indicate its position.
Building module for enhancing traction and break performance.
Identifies the predefined types of battery charging."
Does the blade always return to the same position (trailable switch)"
Device used to detect the seismic wave and measure the seismic intensity in case of earthquake.
Elementary point as part of an ordered point set.
Parameter used to check if the tangential continuity of two geometric segments is respected."
Indication of whether the ballast shoulder is reinforced or not. A reinforced ballast shoulder increases the lateral resistance of the sleepers by increasing their weight (more material)."
Yes/no -&gt; max. level of wear as an attribute?"
The turnout part of the continuous welded rail."
Indicates the type of overhead contactline system (OCS)."
Prevents water penetration. Prevents pumping and mixing of the layers. Protects groundwater in the event of an accident (oil, etc.). Guides water to the drainage system. The barrier layer prevents the penetration of water into the substructure and subsoil, restricts the growth of plants, protects the groundwater and reduces the effects of an accident (e.g. oil spill). It directs the surface water from the load area to the side of the track, where it can be seeped or drained in a controlled manner. It is usually placed on a levelling layer of asphalt granulate.
Indicates whether the blade is articulated or not."
Indicates whether the equipment has the function of brake line lock or not."
fix, removable: is it removable? (0=no; yes=1)"
Automatic tensioner attached to a mast to ensure constant tension in conductors by means of Hydraulics.
Neutral sections are required as phase separations with a neutral gap, when individual feeder sections are connected to different phases of the national electricity supply grid.
Space that is reserved to install telecom equipment
Indication of the track angle in the frog (straight or 1:x)"
Substation equipped with an auto-transformer supplied from a line feeder, allowing energy to be injected into the contact line Note 1 to entry: The auto-transformer substation can in addition provide some or all of the functions of a track sectioning or track paralleling. (IEC 60050-811-36-12)
Metallic or plastic support for passing cables.
Identifies the predefined types of cable fitting from which the type required may be set."
Special construction capabilities like self-supporting, flat devidable cable or bus flat non devidable cable or bus supporting elements inside (steal, textile, concentric conductor). Note that materials used should be agreed between exchange participants before use."
IP Code, the International Protection Marking, IEC 60529), classifies and rates the degree of protection provided against intrusion."
Indicates whether the cable is fire resistant."
Equipment installed on classification yard (also named as shunting yard) to regulate the speed of rolling vehicles.
Device for turning railway rolling stock, usually locomotives, so that they can be moved to any direction by rotating.
All conductors which form the intended path for the earthing.
Total number of single-mode fibers in the optical fiber cable."
Type of object where the marker is installed, e.g. wall, fundament"
Access to banquet/train path via road/country lane"
Internal referencing in track/switch panel in acc. with installation plan"
Indicates the temperature setpoint. For thermostats with setbacks or separate high and low setpoints, then the time series may contain a pair of values at each entry where the first value is the heating setpoint (low) and the second value is the cooling setpoint (high)."
Cabinet for acquisition equipment of station monitoring equipment
It is a cabinet for storing acquisition equipment of station monitoring equipment.
It is a danger signal that announces the arrival of the train near the level crossing.
The peak lightning voltage that the insulator could withstand."
System using counting points with a wheel detector and a counter which detects the occupancy of a section of track by comparing the number of axles which enter the section with the number of axles which leave the section, parity of the numbers being necessary to give a clear indication. [source: IEC 60050-821]
Voltage range as declared by the manufacturer expressed by its lower and upper rated voltages [Source : IEC 62368-1:2010, 3.3.10.5]."
One core has protective earth marked insulation, Yellow/Green."
Physical description as external reference of the equipment, including e.g.weight, shape, model, length, height, diameter."
Length measured for the left cant at the end of the segment."
Indicates whether the steady device is set on the working wire."
Indicates whether the sleeper is electrically insulated due to its design or the running rails or not."
Vertical alignment segment where the derivative of vertical angle with respect to sloping length along the track (3D length) obeys a linear change. !["Vertical clothoid segment"](../../figures/ifcalignmentverticalsegmenttypeenum-clothoid_curvature.png "Figure 1 &mdash; curvature equation of the vertical clothoid segment")"
Part which supports and retains the stock rail and a flat surface upon which the foot of the switch rail slides.
Indication of whether the affected object lies to the left or right in the track panel direction"
Starting point defined by the distance along the horizontal alignment."
The reference design criteria distance from the last tensioner to the ground or the base surface (B value). It defines the nominal distance in relation to temperature."
A conductor consisting of a number of individual uninsulated wires laid up together in alternating left- and right-hand helical layers.(IEC 60050-466-10-03)
The passive balise is a point device for transmitting fixed data packets from the trackside to the train.
IfcInteger is a defined type of simple data type Integer
Non linear cant variation according to Helmert curve base formula. **Base formula (Cant)** !["Helmert cant transition segment"](../../figures/ifcalignmentcantsegmenttypeenum-helmertcurve.png "Figure 1 &mdash; Cant for Helmert curve transition segment")"
Temporary speed restriction server（TSRS）communication device cabinet
The cabinet is used for placing TSRS communication device
Construction made of metallic parts or construction including interconnected metallic structural parts, which can be used as an earth electrode.
Elevation in Z of the start point relative to the IfcAlignment coordinate system. > NOTE&nbsp; It is strongly advised to not offset the IfcAlignment coordinate system from the project engineering coordinate system."
Track strengthening Sleeper compatibility
Indication of whether the retarder lies on the inside or outside in the track edge direction"
The alignment curve is a parameterized space curve which represents the geometry of any track section. It is defined by three alignments (= layouts), which are to be regarded as independent from each other: an horizontal alignment (2D) a vertical alignment (1D) a cant alignment (1D) (synonym = superelevation) Each of these three alignments is defined by a sequence of ordered geometric segments composed of various geometry types that are linked together in a chain.
Indicates how many simultaneous calls the base transceiver station can handle."
Leaky coaxial cable is a coaxial cable whose outer conductor is not completely closed, it is a subtype of coaxial cable. Part of the electromagnetic energy transmitted along the cable can be radiated or coupled to a wireless transmission system consisting of the outer conductor and the surrounding environment through a slot or gap on the outer conductor or in the opposite direction as mentioned above.
The gateway GPRS support node is a component of the GPRS core network that extends the GSM to allow packet switching functionalities. This component is responsible for the internetworking between the GPRS network and external packet switched networks (e.g. the internet). The GGSN converts the GPRS packets coming from the SGSN into the appropriate packet data protocol (PDP) format (e.g., IP or X.25) and sends them out on the corresponding Packet Data Network (PDN). In the other direction, PDP addresses of incoming data packets are converted to the GSM address of the destination user. The GGSN is responsible for IP address assignment and is the default router for the connected user equipment (UE). The GGSN also performs authentication and billing functions. The location register function in the GGSN stores subscription information and routeing information (needed to tunnel packet data traffic destined for a GPRS MS to the SGSN where the MS is registered) for each subscriber for which the GGSN has at least one PDP context active.
Tracks recessed into road surface. Superstructure type usually specific (slab track/grooved rail). Covering can be driven on in all directions. Usually used in public areas. Combined drainage systems normally used.
Designates the voltage range of the circuit, according to IEC. HIGHVOLTAGE indicates >1000V AC or >1500V DV; LOWVOLTAGE indicates 50-1000V AC or 120-1500V DC; EXTRALOWVOLTAGE indicates <50V AC or <120V DC."
Permanent and switched electrical connections are used in the overhead contact line system to provide electrical current transfer.
The Helmert curve or Helmert transition is an early example of a high performance transition bend. It is now widely accepted in relevant science and engineering that the linear change of the clothoid induces unwanted kinematic influences to a running train at speeds higher than 125 km/h. In the geometry perspective the Helmert segment is the assembly of two parts of same length which mirror the same change in radius of curvature. A rough approximation is known as the biquadratic parabola. >NOTE&nbsp; also referred to as Schramm curve. **Base formula (Curvature)** !["Helmert curve transition segment"](../../figures/ifcalignmenthorizontalsegmenttypeenum-helmertcurve.png "Figure 1 &mdash; Curvature for horizontal Helmert transition segment")"
Indicates the quality of measurement or failure condition, which may be further qualified by the Status. True: measured values are considered reliable; False: measured values are considered not reliable (i.e. a fault has been detected); Unknown: reliability of values is uncertain."
Type of terminal/banquet: none, minimal refuge area, service path, footpath, other track"
Internal referencing in switch panel in acc. with installation plan"
The system used to anchor the fastening in the sleeper"
Spacing of the rails on a railway track, measured between the inner faces of the load-bearing rails. "
Explosive capsule placed on the rail to give an audible danger signal to driver.
Grounding clamp dedicated for rigid catenary
Distance to track edge +/- in track panel direction / [m]"
Spatial structure to organize overhead line features inside a railway project in classical electrification project. It can be use to structure tensioning section facilities and overlaps.
Purpose of informing on how the vonductor is constucted (interwined or solid). I.e. Solid (IEV 461-01-06), stranded (IEV 461-01-07), solid-/finestranded(IEV 461-01-11) (not flexible/flexible)."
Automatic tensioner attached to a mast to ensure constant tension in conductors by means of balance weights.(UIC R 791-2006)
Count of point machines inside turnout panel."
It shows the ability of DC regulated power supply to suppress the fluctuation of output voltage caused by the change of load current (output current) when the input voltage is constant."
Who can use the facility, e.g. maintenance, rescue services"
A transformer is an inductance device that transfers electric energy from one circuit to another. It is used for voltage transformation, current change, impedance transformation, isolation, voltage regulation and so on.
The galling area of the object surface."
It is a cabinet for storing lightning-protection device.
Distribution Cabinet of lightning-protection device
Indicates the type or standard of signal transmitted by the master unit."
èéçġṠçṠçṠçḋŸ It provides interlocking system control and display equipment for operators, generally including display, mouse, keyboard and so on.
maintain rail in position applying controls force via elastic design"
Individual segment along the _IfcAlignment2DVertical_, being defined in the distance-along/z coordinate space. The vertical alignment is defined by segments that connects end-to-start. The vertical alignment curve geometry is defined in a plane with x = distance along horizontal, the y = height (or elevation). The transition at the segment connection is not enforced to be tangential, if the \X2\201C\X0\tangential continuity\X2\201D\X0\ flag is set to false, otherwise a tangential continuity shall be preserved. The following vertical segment types are defined: * line segment - _IfcAlignment2DVerSegLine_ * circular arc segment - _IfcAlignment2DVerSegCircularArc_ * parabolic arc segment - _IfcAlignment2DVerSegParabolicArc_ which can describe symmetric and unsymmetric parabolas For each vertical segment, the following non-redundant information is provided: * the start point (in distance along/ height coordinates) * the start gradient (as a ratio measure with horizontal being 0, uphill positive, and downhill negative) usually between 1 < n < -1 (equal to a percentage of 100% < n < -100%, or to a degree of 45° < n < -45° but higher values are possible) * the length (as horizontal length along the distance along (not the curve segment length)) * the curve parameter needed for circular and parabolic arc segments The following information can be calculated (and is therefore not exchanged explicitly to avoid redundancy and inconsistencies) * the end distance along (from the distance along and segment length) * the end height (from start distance along, gradient, length and curve parameter) * the end direction (from start direction, segment length and curve parameter) * the point of vertical intersection (from start direction and end direction) The following checks can be done to validate the correct exchange: * continuity \X2\2013\X0\ does the calculated end distance along of the previous segment matches with the provided start distance along of this segment * tangential continuity \X2\2013\X0\ does the calculated end gradient of the previous segment matches with the provided start gradient of this segment > NOTE Specific subtypes of the IfcAlignment2DVerticalSegment add specific geometric curve parameters. Connectivity between vertical segments is not necessarily tangential, but this can be enforced as a requirement through the attribute _TangentialContinuity_. !(../../../../../../figures/ifcalignment2dverticalsegment.png "Figure 1 â Alignment vertical segment") bSI Documentation
Distance of banquet element start/end to track edge origin / [m]"
A special bolt which is anchored into conrete, stone, or brickwork."
An intermediate device implementing voice and data communication between telephone consoles and telephone exchanges. It can support IPv4 and IPv6 protocols.
Required length of the closure spacing."
The cabinet is used for placing network equipment
One or more cells fitted with devices necessary for use, for example case, terminals, marking and protective devices. (IEC 60050-482-01-04)
Identifies the predefined types of cable segment from which the type required may be set."
A Base Transceiver Station (BTS) is a network component which serves one cell. It completes the conversion between BSC and wireless channel, and realize the wireless transmission and related control functions between BSC and MS through the air interface. BTS has the functions of rate matching, channel coding/decoding, modulation/demodulation and other air interface physical layer.
Layer in which the ballast is built in: topballast, subballast, space filled ballast"
Component used to suspend a registration, an auxiliary catenary or a contact wire from a head-span or a longitudinal catenary wire.(IEC 60050-811-33-22/UIC R 791-2006)
The rear side port of the distribution frame.
The underlying spacing between individual sleepers. "
Indicates the transmitted frequency used by the master unit."
MME is the control plane entity within EPS (Evolved Packet System) supporting functions. MME is used for user access control and mobility management.
CTCèẄḊçḋæ§å¶åḞ It is used for placing CTC extension control equipment at the station, which is used for staff scheduling. ãOperation Foundation of Railway Signalingã [ISBN 978-7-113-08943-6]
Turnout superstructure is one subtype of track part with turnout panel.
Length of overhead contactline between two teminating points. It is a design parameter for the overhead contactline system."
A list of the available types of fuse disconnector from which that required may be selected where: EngineProtectionDevice: A fuse whose characteristic is specifically designed for the protection of a motor or generator. FuseSwitchDisconnector: A switch disconnector in which a fuse link or a fuse carrier with fuse link forms the moving contact, HRC: A standard fuse (High Rupturing Capacity) OverloadProtectionDevice: A device that disconnects the supply when the operating conditions in an electrically undamaged circuit causes an overcurrent, SemiconductorFuse: A fuse whose characteristic is specifically designed for the protection of sem-conductor devices. SwitchDisconnectorFuse: A switch disconnector in which one or more poles have a fuse in series in a composite unit."
Predefined type of the vertical alignmnent segment."
Indication of whether the turnout panel has flexible blades, articulated blade. Yes/no"
An assembly of components which secures a rail to the supporting structure and retains it in the required position whilst permitting any necessary vertical, lateral and longitudinal movement. Note: definition from EN 13481-1."
Maximum speed for diverging line that corresponds to the type of turnout and design constraints."
Box to contain a cable junction, a component for the uninterrupted connection of two pipes or cables.
The length of the protruding part of the anchor bolt."
Railway self service identity verification gate
Railway Self-service Identity Verification Gate: An equipment for consistency check of tickets, id card and face image. Passengers are allowed or forbid to pass according to the check result.
Mechanical device to fix an element (point, derailer, level crossing) in a certain position.
Self Extinguishing cable/core according to IEC 60332.3."
Sign related to the road at a level crossing.
Does the track panel have any other special equipment? Select from normal, rack, funicular, with rigid overhead conductor rail (âandâ selection)"
Indicates the type of fastening used to generate traction between the foot of the rail and the sleeper. It depends on but is not uniquely identified by the type of sleeper. This property shall only be used when sleeper fastening is not modelled as an element."
Covering between rails for internal maintenance purposes. Can be walked on. Situated in the track. Not public.
çẀäẃå­æẅRBCæċå£è®ẅåĊçæẃæ The cabinet is used for placing RBC interface device
This class regroups all the telecommunication equipment that must be powered in order to be able to function.
Distance along the horizontal alignment, measured along the IfcAlignment2DHorizontal given in the length unit of the global IfcUnitAssignment."
Avoid a sitting down of the birds at electrically critical points of the catenary system.Thus the birds are protected against electrical shocks and disturbances by short circuit are avoided.
Cabinet of blocks frequency-shift equipment
It is a cabinet for storing blocks frequency shift transmitting and receiving equipment.
The cabinet is used for placing RBC host
An outdoor space that is reserved to install Telecom equipments and facilities
Indication of whether the guard rail lies on the inside or outside in the track edge direction"
Distance along the horizontal alignment as measured along the corresponding _IfcAlignmentHorizontal_. > NOTE 1&nbsp; The distance along is measured from the start point of _IfcAlignmentHorizontal_, any optionally provided offset expressed by _IfcAlignmentHorizontal_.StartDistanceAlong is not taken into account. > NOTE 2&nbsp; The unit of measurement is the global length unit, as set by _IfcContext_.UnitInContext"
The Global position of the project in the World Geode.
Internal referencing in panel in acc. with installation plan of panel"
Fitting element for adjusting the tension or length of tensioning systems
Indicates the width of the narrow channel."
The termination point of a wire pair. Each wire pair has two termination points.
Power supply mode of the equipment or system."
CTCèṡçẀåṖċäẄçḋ（RBCäẁ­åṡãçṁåḂæ®ṁãåẀèẄḊæ） It is the CTC remote terminal for scheduling management and monitoring of signnaling equipment
Indicate the connection type between the remote unit and the master unit."
Cabinet of interlocking system remote control and display
It is a cabinet for storing remote control and display equipment of interlocking system.
Elevation of the starting point (= Cartesian Z-coordinate)"
Pile or barrier provided for mechanical protection.
The delivery state of rail, which indicates the final treatment at the end in manufacturing."
Cable with a specific purpose to lead electric current within a circuit or any other electric construction. Includes all types of electric cables, mainly several core segments or conductor segments wrapped together."
(EN 13232-1-2004): Arrangement ensuring the intersection of two opposite running edges of turnouts or diamond crossings and having one crossing vee and two wing rails. Named frog in the US
The type of fastening defines the fastening objects used (ribbed plates, screws, clamps, ...) in order to generate traction between the foot of the rail and the sleeper. It depends on but is not uniquely identified by the type of sleeper."
Indicates if the connection is between two different heights (TRUE) or not (FALSE)."
Cabinet for web server of monitoring system
It is a cabinet for storing web server of monitoring system.
Geometric segments are used to define the railway cant. The segments are ordered. Each cant segment is defined with: a starting point known by its distance along the horizontal alignment [m] the segment length in [m] the start cant value in [mm] the end cant value in [mm] the information on how the segment is connected to the following segment. This information is used to describe possible discontinuities (e.g. invalid sudden change of cant or missing cant information if end point and starting point differ over a threshold). Additionally: an information which describes if a smoothing was applied between two cant segments
Plastic or metallic tubes that contain cables.
Reference of corresponding installation plan of the dilatation"
Devices, such as point switches, locks, etc., which are used to control the turnout to the normal position or reverse position, realize the turnout lock and give corresponding position information.
Power distribution facilities for low-voltage equipements or auxillary equipements.
Indicates the number of branches that can be supported by the optical splitter."
The division of the contact line into electrical sections, each of which may be isolated from the adjacent sections e.g. by means of a switch.(UIC R 791-2006)
Conductor ensuring the electrical continuity of rails at a joint.(UIC R 791-2006/IEC 60050-811-35-07)
Is there a mandatory limit on noise emissions at this location? / [dB]"
What's the purpose of the hollow sleeper? Eg. cable trenching, protection of turnout mechanism"
Indicates the type of railway electrification."
If turnout is curved =&gt; curvature radius of the main branch / [m]"
Switch for alternatively closing and opening one or more electric circuits.(IEC 60050-151-12-23)
Rail that limits risk of train derailment, normally not loaded.
Cable/bus maintain given properties/functions over a given (tested) time and conditions. According to IEC standard."
Alternative to the distance along the starting point can also be defined with horizontal Cartesian coordinates (X, Y)."
Angle, inclination of the rail to the axle / [deg]"
Earthing a point or points in a system or in an installation or in equipment, for purposes other than electrical safety
Geometric segments are used to define the vertical alignment. The segments are ordered. Each vertical segment is defined with: a starting point known by its distance along the horizontal alignment [m] the starting point elevation in [m] the starting direction as a gradient [âḞ] the segment length in [m] the information on how the segment is connected to the following segment. This information is used to describe possible discontinuities (e.g. if there is a vertical bend). Additionally: a radius, for arc segments [m] the initial and final radius for transition segments as well as the type of transition curve. Some transition curves require additional parameters. The elevation (= Cartesian Z-coordinate) of the starting point, the segment length and the starting gradient are defined for each geometric element.
Indicates whether the sleeper is hollowed or not."
Level of the highest internal part of the cross section as measured from ground level."
The IfcData identifies a particular calender day, expressed by year, calender month and day in month. It is expressed by a string value following a particular lexical representation.
Indicates whether the element is locked (TRUE) or not (FALSE)."
Indicates values over time which may be recorded continuously or only when changed beyond a particular deadband. The range of possible values is defined by the Value property on the corresponding occurrence property set (Pset_ControllerTypeFloating, Pset_ControllerTypeProportional, Pset_ControllerTypeMultiPosition, or Pset_ControllerTypeTwoPosition)."
Electrical connection equipment for multi-directional branching of cables (with one entrance, seven or four exits, for connecting trunk cables to branching cables).
Indicates the data transfer rate of the access point in bit per second (bps)."
Total number of untwisted wire pairs in the copper pair cable."
Generic element for all kind of sensors which detect e. g. the passage of a wheel, falling rocks, strong wind etc.
Nominal value of the spark gap breakdown voltage tolerance."
Indicates wether the rail fastening is a reduced resistance fastening (YES) or not (NO)."
Generic transport equipment can represent all kind of transport equipment, which provides transmission channel for telecom subsystems or other subsystems.
An instrument transformer in which the secondary voltage, in normal conditions of use, is substantially proportional to the primary voltage and differs in phase from it by an angle which is approximately zero for an appropriate direction of the connections.(IEC 60050-321-03-01)
A fan out is a special cable fitting that provides a safe transition from multi-fiber cable units to individual fibers."
Name of the welding process. Alternative to the numeric Process property."
Indicates the minimum tensile strength."
Indoor space that is reserved to install telecom equipment and facilities
The electric circuit comprising the running rails or a return current rail, their electrical connections and the return cables to the sub-station.(UIC R 791-2006) All conductors which form the intended path for the traction return current and the current under fault conditions Note 1 to entry: The conductors can be for example: -running rails; -return conductor rails; -return conductors; -return cables.(IEC 60050-811-35-01)
Additional attributes specially needed for rail.
Indicates whether the fiber has a tight jacket or not."
Indicates the type of optical splitter, single mode or multi-mode."
fix together the rail fastening system "
For data ports, captures log of data transmitted. The LIST at IfcTimeSeriesValue.Values may split out data according to Pset_DistributionPortTypeCable.Protocols."
A list of the available activations for selector switches from which that required may be selected."
Device intended for electrical insulation and mechanical fixing of equipment or conductors which are subject to electric potential differences.(IEC 60050-471-01-10)
Railway crossing Permanent way slab material
Type of foundation in the OCS supporting system."
Percent of costs paid by the other infrastructure owner."
Does the sleeper have any special equipment for fastening components (e.g. balise, SIGNUM magnet)? Yes/no"
Special type of a Cable route crossing under the track.
Cabinet used to store network interface equipment
Reference to which turnout panel (or dilatation panel) the half set of blades belongs to. Internal referencing"
A component of a distributed base station for implementing baseband processing functions.
Track System refers to a functional track with the explicit terminals. It refers a continuous sequence of track parts.
Electro-mechanical device related to the interlocking to include locally operated elements. The lockable device release checks the presence of a key and releases the key by command.
Cabinet of power supply for local interlocking system
It is a cabinet for storing power equipment of local interlocking system.
Length measured as distance between the nominal centre points of the two contact patches of a wheelset and rails."
Required nominal angle of transverse slope."
Cosine transition. The cosine transition was already discussed in 1868. Width the advent of high-speed rail it was applied in production designs. It is e.g. installed on Japanese high speed lines **Base formula (Curvature)** !["Cosine curve transition segment"](../../figures/ifcalignmenthorizontalsegmenttypeenum-cosinecurve.png "Figure 1 &mdash; Curvature for horizontal Cosine curve transition segment")"
Cabinet for network management server of monitoring system
It is a cabinet for storing network management server of monitoring system.
Space that is reserved to install telecom infrastructure (support or layout)
An opening to a confined space such as a shaft, utility vault, or large vessel, used as an access point for underground cable, allowing inspection, maintenance, and system upgrades. It' also called manhole.
Length of the alignment curve in the horizontal plane, if known."
The line kilometre is not to be confused with the chainage. The line kilometre follows a special horizontally defined kilometre-curve-alignment that roughly follows the exact horizontal alignment (= chainage), but is not identical to it."
èẄḊçḋZPW-2000èẄẀéçṁèṖŸæċå£åçæṁæẃ（æ） It is a cabinet for storing station ZPW-2000 track circuit interface and monitoring device .
Cabinet for station ZPW-2000 track circuit interface and monitoring device
A control element at which equipment operational status, condition, safety state or other required parameters are indicated."
Temporary speed restriction server（TSRS）cabinet
Conductive screen used to separate an electric circuit and/or conductors from hazardous-live-parts.
Within what radius is the stock rail bent?"
The ratio between the third harmonic current and the phase current."
Range extender for increasing the voltage supplied so that the spply distance could be extended.
The nominal length describing the longitudinal dimensions of the fastener type. { .change-ifc2x4} > IFC4 CHANGE&nbsp; Deprecated; the respective attribute of _IfcMechanicalFastenerType_ should be used instead."
Linear cant variation. This is the "natural" formula for horizontal clothoids. **Base formula (Cant)** !["Linear ramp transition segment"](../../figures/ifcalignmentcantsegmenttypeenum-lineartransition.png "Figure 1 &mdash; Cant for linear ramp transition segment")"
A fitting that joins three or more segments of arbitrary connector types for signal splitting or multiplexing."
Geometric primitive. All required attributes are defined in the class "Alignment Horizontal Segment".
Example alignment of drainage to evacuate water near the tracks.
A fastener with a tapered threaded shank and a slotted head."
Length or, in the event of the shape being circular in plan, the radius of the chamber."
The designation of the standard applicable for the definition of the Cable/Bus used."
The cabinet is used for placing network safety server
Indicates the type of vending machine user interface."
A desktop terminal equipment used by railway dispatching system, mainly realizing dispatching voice communication.
The railway cant alignment is composed of geometric segments with the two following geometry types Straight line for constant cant or constant change of cant Transition curve for curved cant
Tangential Continuity for the end point. Possible values are: Not connected according national regulation Connect with smoothing Connected "
Reference number of the welding process according to ISO 4063, an up to three digits long code"
Cabinet of communication quality supervision equipment
The cabinet is used for placing communication quality supervision equipment
A fiber tube is semi-rigid hollow plastic tube with a very small radius that houses and protects a certain number of optical fiber segments. An optical cable segment may contain many fiber tubes."
It is a cabinet for storing ZPW-2000 track circuit interface and monitoring device of relay station.
Cabinet for ZPW-2000 track circuit interface and monitoring device of relay station
Design and type of lubricating system e.g. active, passive."
Indicates the gender of B-end connector."
Maximum design pressure for the actuator."
In the AC electrified section track circuit, the impedance transformer makes the traction current cross the rail insulation, and connects the track circuit transmitting and receiving equipment to the rail by transformer coupling.
Indicates the Maximum transmission attenuation of feeder."
The physical port connection: ACPLUG: AC plug DCPLUG: DC plug CRIMP: bare wire"
Name that uniquely identifies a segment inside a Track LRS "
The cabinet is used for placing prepositive server
Cabinet of communication prepositive server
Object minimizing pump effects of the substructure
Provides telephony communications between the operators of the railway network
Network management server（EMS）cabinet
It is a cabinet for storing station train control center equipment.
Cabinet for station train control center equipment INDOOR
Produced on the field or pre-manufactured"
Individual segment along the _IfcAlignmentHorizontal_, being defined in the x/y coordinate space. Each single horizontal alignment segment has an optional associated segment definition. The placement of _IfcAlignmentHorizontalSegment_ and the _IfcCurveSegment_ _StartPlacement_ correspond to each other.\X\0D \X\0D The following information can be calculated (and is therefore not exchanged explicitly to avoid redundancy and inconsistencies)\X\0D \X\0D * the end point (from start point, direction, segment length and curve parameter)\X\0D * the start distance along (from the end distance along of the previous segment, or the start distance along of the horizontal alignment (if it is the first segment)\X\0D * the end distance along (from the start distance and the segment length)\X\0D * the end direction (from the curve parameter, the start direction and the segment length)\X\0D * the point of intersection (from the start direction and the end direction)\X\0D \X\0D The following checks can be done to validate the correct exchange:\X\0D \X\0D * continuity \X2\2013\X0\ does the calculated end point of the previous segment matches with the provided start point of this segment\X\0D * tangential continuity \X2\2013\X0\ does the calculated end direction of the previous segment matches with the provided start direction of this segmentbSI Documentation
Individual segment along the _IfcAlignmentVertical_, being defined in the distance-along/z coordinate space.\X\0D \X\0D The vertical alignment is defined by segments that connects end-to-start. The vertical alignment curve geometry is defined in a plane with x = distance along horizontal, the y = height (or elevation). The transition at the segment connection is not enforced to be tangential, The _IfcSegment_ _Transition_ enumeration specifies the type of transition explicitly.\X\0D \X\0D The following vertical segment types are defined:\X\0D \X\0D * line segment - _IfcAlignmentVerticalSegmentTypeEnum_ .LINE.\X\0D * circular arc segment - _IfcAlignmentVerticalSegmentTypeEnum_ .ARC.\X\0D * parabolic arc segment - _IfcAlignmentVerticalSegmentTypeEnum_ .PARABOLICARC. which can describe symmetric and unsymmetric parabolas\X\0D * transition segment with linear curvature variation - _IfcAlignmentVerticalSegmentTypeEnum_ .CLOTHOID.\X\0D \X\0D For each vertical segment, the following non-redundant information is provided:\X\0D \X\0D * the start point (in distance along/ height coordinates)\X\0D * the start gradient (as a ratio measure with horizontal being 0, uphill positive, and downhill negative) usually between 1 < n < -1 (equal to a percentage of 100% < n < -100%, or to a degree of 45° < n < -45° but higher values are possible)\X\0D * the length (as horizontal length along the distance along (not the curve segment length))\X\0D * the curve parameter needed for circular and parabolic arc segments\X\0D \X\0D The following information can be calculated (and is therefore not exchanged explicitly to avoid redundancy and inconsistencies)\X\0D \X\0D * the end distance along (from the distance along and segment length)\X\0D * the end height (from start distance along, gradient, length and curve parameter)\X\0D * the end direction (from start direction, segment length and curve parameter)\X\0D * the point of vertical intersection (from start direction and end direction)\X\0D \X\0D The following checks can be done to validate the correct exchange:\X\0D \X\0D * continuity \X2\2013\X0\ does the calculated end distance along of the previous segment matches with the provided start distance along of this segment\X\0D * tangential continuity \X2\2013\X0\ does the calculated end gradient of the previous segment matches with the provided start gradient of this segment\X\0D \X\0D > NOTE Specific subtypes of the IfcAlignmentVerticalSegment add specific geometric curve parameters. Connectivity between vertical segments is not necessarily tangential, but this can be enforced as a requirement through the attribute _TangentialContinuity_.\X\0D \X\0D !["Alignment vertical segment"](../../../../../../figures/ifcalignment2dverticalsegment.png "Figure 1 — Alignment vertical segment")bSI Documentation
The IfcAlignmentHorizontalSegmentTypeEnum indicates the type of a segment of a horizontal alignment segment (IfcAlignmentHorizontalSegment). Horizontal segments can be viewed from a geometric perspective and from a kinematic perspective. In recent times the kinematic perspective gained importance. The enumerations are detailed according to this development especially in modern track design.\X\0D \X\0D **Kinematic perspective on horizontal alignment segments**\X\0D \X\0D The central parameter of the kinematic perspective is lateral acceleration of the vehicle induced by change of direction while driving. In the horizontal layout this is the represented by the curvature of the segment. According to the curvature value the following categorization can be made:\X\0D \X\0D | Curvature | Segmenttype | Enumeration Values |\X\0D |:----|:------------------|:----------|\X\0D | 0 | straight line | LINE |\X\0D | constant in the complete segment, <> 0 | Circular arc | CIRCULARARC |\X\0D | variation along the segment | Transition with linear curvature variation | CLOTHOID, CUBIC |\X\0D | variation along the segment | Transition with non-linear curvature variation | HELMERTCURVE, BLOSSCURVE, COSINECURVE, SINECURVE, VIENNESEBEND |\X\0D \X\0D \X\0D **Geometric perspective on horizontal alignment segments**\X\0D \X\0D \X\0D \X\0D The traditional view is denoted by the geometric perspective in the context of the business terminology related IfcAlignment documentation. Before the availability of modern computers alignment design was performed using "traditional" drawing techniques. In the first phase of computerization this origin led to a representation in the x,y space first and a check of safety related properties in a second step. This can still be seen in regulations which have been put into effect 1980 or earlier. Of course designs which have been produced on basis of these regulations reflect the "good enough" attitude in the precision of the documentation. \X\0D \X\0D In a later phase an increasing importance of the kinematic perspective can be observed. Here precise control of the lateral acceleration (horizontal and cant layout) and vertical acceleration (vertical layout) became prevalent. Designers started to use high performance transition bends especially in high speed scenarios. In the kinematic perspective precise curvature fitting between consecutive segments needs to be better than in the "good enough" approach of traditional geometric perspective. Central terms are e.g. "jerks", "theoretical cant" or "cant deficiency".\X\0D \X\0D **Generic calculation of intrinsic x, y-coordinates for a given curvature**\X\0D \X\0D For each horizontal alignment segment with a known curvature formula a generic method to calculate segment intrinsic coordinates exists.\X\0D \X\0D \X\0D !["Double integration"](../../figures/ifcalignmenthorizontalsegmenttypeenum-curvature2coord.png "Figure 1 — Double integration of curvature yielding intrinsic coordinates")\X\0D \X\0D >NOTE: While it is possible to apply the generic calculation also for trivial cases like LINE or CIRCULARARC it is much more efficient to use available formulas.\X\0D \X\0D **Word of warning**\X\0D \X\0D "Good enough" traditional designs have to be carefully checked before being included into a high precision 3D model. Intermediate corrections might be necessary. Fortunately the clothoid works very well with comparable documentation quality both in the classic geometric perspective and in the more recent kinematic perspective. Fortunately the vast majority of horizontal transition bends are designed and implemented as clothoids.\X\0D \X\0D **Recommendation**\X\0D \X\0D Check the relevant regulations for the network in question. Alignment designs as such are very stable over the lifetime of the road or track. Especially for old designs quality and precision of available documentation has to be checked very carefully. A clear understanding of limitations should be established before implementing automated data flows between high precision BIM environments and legacy documentation systems. This applies both to legacy, central databases and to legacy, individual documents. \X\0D \X\0D **Used Symbols and their meaning**\X\0D \X\0D | Symbol | meaning | Unit, value range |\X\0D |:----|:------------------|:----------|\X\0D | L | full length of segment | positive length L > 0 |\X\0D | s | current position on segment | 0 < s < L |\X\0D | ξ | = s / L (Greek "xi") standardised, dimensionless path length along the alignment / track centre line | 0 < ξ < 1 |\X\0D | κ | (Greek "kappa") Curvature (inverse radius) of the alignment / track centre line in plan view (horizontal layout). | 1/radius |\X\0D | κ1 | Curvature (inverse radius) at beginning of the alignment / track centre line in plan view (horizontal layout). | 1/radius |\X\0D | h | height of the gravity center line used for calculation above the track centreline in the ground plan. | length |\X\0D | ψ | (Greek "psi") Angle of cant (cross slope angle, bank angle) | rad |\X\0D | φ | (Greek "phi") Directional angle (azimuth, bearing) | rad |\X\0D | x(s) | variable longitudinal coordinate of the projection of the alignment / track centreline into the ground plan. | length |\X\0D | y(s) | variable transverse coordinate of the projection of the alignment / track centreline into the ground plan. | length |\X\0D \X\0D **Terminology**\X\0D \X\0D **Intrinsic coordinate, intrinisc coordinate system of an alignment segment:**\X\0D \X\0D The origin of an intrinsic coordinate system is the start of the segment. The direction of the positive x-axis is the start direction of the segments.bSI Documentation
The IfcAlignmentVerticalSegmentTypeEnum indicates the type of a segment of a vertical alignment segment (IfcAlignmentVerticalSegment).\X\0D \X\0D \X\0D | Vertical curvature | Segmenttype | Enumeration Values |\X\0D |:----|:------------------|:----------|\X\0D | No vertical curvature | constant gradient | CONSTANTGRADIENT |\X\0D | Derivative of gradient with respect to horizontal projection of alignment is constant | Vertical curve, parabola | PARABOLICARC |\X\0D | Derivative of vertical angle with respect to 3D arc length along the alignment is constant | Vertical curve, circular | CIRCULARARC |\X\0D | Variation of vertical curvature is constant | Vertical curve, clothoid | CLOTHOID |\X\0D \X\0D \X\0D >NOTE A vertical curve in track that starts or ends in canted switches and crossings can be of a higher order polynomial than a parabola.\X\0D \X\0D >NOTE chainage is longitudinal distance along the horizontal projection of the alignment (e.g. track centre line).\X\0D \X\0D \X\0D >NOTE Definitions according to EN 13803/2017 (except CLOTHOID)\X\0D \X\0D \X\0D \X\0D **Used Symbols and their meaning**\X\0D \X\0D \X\0D | Symbol | meaning | Unit, value range |\X\0D |:----|:------------------|:----------|\X\0D | L | full length of segment | positive length L > 0 |\X\0D | s | current position on segment | 0 < s < L |\X\0D | θ | (Greek "theta") Longitudinal slope angle (incline or decline) | rad |\X\0D | g | gradient (math); g=tan(θ) | |\X\0D | x(s) | variable longitudinal coordinate of the projection of the alignment / track centreline into the ground plan. | length |\X\0D | y(s) | variable transverse coordinate of the projection of the alignment / track centreline into the ground plan. | length |\X\0D | z(s) | Variable vertical coordinate of the projection of the track centreline in plan in a Cartesian coordinate system in the vertical direction. | length |\X\0D | zc(s) | Ordinate of the vertical circular arc of measured away from the tangent line at position s. | length |\X\0D | LV | length of vertical radius radius (inverse curvature) | length |\X\0D | RV | radius (inverse curvature) of the track centreline at a point in the elevation diagram (longitudinal section) | length |\X\0D | κV | (Greek "kappa") Vertical curvature | 1/radiusV |\X\0D | ZG | Distance of the tangent intersection from the chord of the vertical circular arc | length |\X\0D | ZM | Distance of the centre of the vertical circular arc to the tangent intersection point (stitch height) | length |\X\0D | lT | Length of the tangents of the vertical circular arc | length |\X\0D \X\0D >NOTE Symbols according to EN 13803/2017\X\0D \X\0D >NOTE gradient has a slightly different definition in civil engineering. "Gradient (Civ.Eng.) is the degree of slope, e.g. of a highway or a railway. US grade".\X\0D \X\0D >NOTE most railway track designs use the **small angle assumption**. That means θ=tan(θ)=gradient.\X\0D \X\0D **References to EN 13803/2017**\X\0D \X\0D EN 13803/2017 covers "Track alignment design parameters". As such it is not fully compatible with definitions for IFC Alignment. Therefore rail specific terms like track have been replaced with more general terms also applicable to road design.\X\0D \X\0D Referenced content of EN 13803/2017 "Table 2 - Elements for vertical alignment" has been modified as follows:\X\0D \X\0D **Vertical curve, parabola:** Derivative of gradient with respect to chainage is constant \X\0D **Generalized:** Derivative of gradient with respect to horizontal projection of alignment is constant\X\0D \X\0D **Vertical curve, circular:** Derivative of vertical angle with respect to sloping length along the track is constant \X\0D **Generalized:** Derivative of vertical angle with respect to 3D arc length along the alignment is constant\X\0D \X\0D EN13803 clause 3.5:\X\0D **Chainage**: longitudinal distance along the horizontal projection of the track centre line.bSI Documentation
An _IfcLengthMeasure_ is the value of a distance.\X\0D \X\0D Type: REAL\X\0D \X\0D > NOTE&nbsp; Type adapted from **length_measure** defined in ISO 10303-41.\X\0D \X\0D > HISTORY&nbsp; New type in IFC1.5.1.bSI Documentation
A non-negative length measure is a length measure that is greater than or equal to zero.\X\0D \X\0D Type: _IfcLengthMeasure_\X\0D \X\0D > HISTORY&nbsp; New type in IFC4.bSI Documentation
An _IfcPlaneAngleMeasure_ is the value of an angle in a plane.\X\0D \X\0D Usually measured in radian (rad, m/m = 1), but also grads may be used. The grad unit has to be declared as a conversion based unit based on radian unit.\X\0D \X\0D > NOTE&nbsp; _IfcPlaneAngleMeasure_ is used where angles need to be described to an accuracy of less than one degree and expressed as decimal parts of an angle. It is widely used for angular measurement except for situations where accuracy needs to be defined using arc measurement; for which purpose the _IfcCompoundPlaneAngleMeasure_ is provided.\X\0D \X\0D Type: REAL\X\0D \X\0D > NOTE&nbsp; Type adapted from **plane_angle_measure** defined in ISO 10303-41.\X\0D \X\0D > HISTORY&nbsp; New type in IFC1.5.1.bSI Documentation
An _IfcPositiveLengthMeasure_ is a length measure that is greater than zero.\X\0D \X\0D Type: _IfcLengthMeasure_\X\0D \X\0D > NOTE&nbsp; Type adapted from **positive_length_measure** defined in ISO 10303-41.\X\0D \X\0D > HISTORY&nbsp; New type in IFC1.5.1.bSI Documentation
An _IfcRatioMeasure_ is the value of the relation between two physical quantities that are of the same kind.\X\0D \X\0D > NOTE&nbsp; Input given in percent is to be divided by 100% when stored as an _IfcRatioMeasure_. For example, 25% becomes 0.25.\X\0D \X\0D Type: REAL\X\0D \X\0D > NOTE&nbsp; Type adapted from **ratio_measure** defined in ISO 10303-41.\X\0D \X\0D > HISTORY&nbsp; New type in IFC1.5.1.bSI Documentation
The direction of the tangent at the start point. Direction value 0. indicates a curve with a start tangent along the positive x-axis. Values increases counter-clockwise, and decreases clockwise. Depending on the plane angle unit, either degree or radians, the sensible range is -360\S\0 \X2\2264\X0\ n \X2\2264\X0\ 360\S\0 (or -2\X2\03C0\X0\ \X2\2264\X0\ n \X2\2264\X0\ 2\X2\03C0\X0\). Values larger then a full circle (>|360\S\0| or >|2 \X2\03C0\X0\| shall not be used."
Predefined type of the horizontal alignmnent segment."
Distance along the horizontal alignment as measured along the corresponding _IfcAlignmentHorizontal_.\X\0D > NOTE 1&nbsp; The distance along is measured from the start point of _IfcAlignmentHorizontal_, any optionally provided offset expressed by _IfcAlignmentHorizontal_.StartDistanceAlong is not taken into account.\X\0D > NOTE 2&nbsp; The unit of measurement is the global length unit, as set by _IfcContext_.UnitInContext"
Radius of parabola or arc. Positive values imply a CCW direction whereas negative CW.\X\0D > NOTE1&nbsp; For _PredefinedType_ is ARC. The radius of the basis circle for the arc. \X\0D > NOTE2&nbsp; For _PredefinedType_ is PARABOLICARC. Parabola constant (determining the \X2\201C\X0\steepness\X2\201D\X0\ of the parabola). The parabola constant is provided by the \X2\201C\X0\minimum parabola radius\X2\201D\X0\, the true radius of a parabola at its vertical axis (the zero-gradient point of the parabola). The minimum radius is twice the focal length of the parabola (the distance between the focal point and the vertex). \X\0D > NOTE3&nbsp; For _PredefinedType_ that is not either ARC or PARABOLICARC the value should be empty."
The nominal diameter of the anchor bolt bar(s)."
Maximum hydraulic flowrate requirement."
Indicate whether the wire pair end point is terminated with a connector or not."
Spatial structure to organize overhead line features inside in a complex railway electrification project like Station , tunnel, turnout or connection area etc.
Shortest distance or the sum of the shortest distances along the surface on an insulator between two conductive parts which normally have the operating voltage between them. (IEV ref 471-01-04)"
Vertical upward movement of the contact wire due to the force produced from the pantograph."
Indicates the ratio between the number of cables in the duct and the maximum number of cables that the duct can contain."
Percent of costs paid by the other infrastructure owner / [%]"
A location where a road is crossing or is crossed by some other mode of transport such as railway, bicycle or pedestrian on the same level.
Indication of whether the cable occurrences are mounted flat (= TRUE) or in a trefoil pattern (= FALSE)."
Prevent wearing of the rails throughout the flange of wheel. Reduce noise emissions. Often located at inner side of the outer rail in a curve or near turnouts (depends from function wearing or noise reduction)
A cable segment is a flow segment used to carry electrical power, data, or telecommunications signals.A cable segment is used to typically join two sections of an electrical network or a network of components carrying the electrical service.
The load of line where the derailer is installed. It is a design parameter and is defined by mass per length."
The radius of the blade bend defined as design parameter."
Indicates whether the sleeper has any special equipment for fastening components (e.g. Balise, signum magnet) or not."
Device used to receive monitoring data from data transmission unit and send the monitoring data to central system, usually located in telecom equipment room.
Equipment installed on classification yard (also named as shunting yard) to block rolling vehicles.
Indication of kilometers at the end of the rack-rail section (in the kilometerage direction) / [m]"
a length of thick strong cord made by twisting together strands of hemp, sisal, nylon, or similar material. used primarily for mooring vessels"
Signal related to the road at a level crossing.
Indicates the colour of a single fiber."
Device to maintain the tension of conductors within the system design parameters.(EN 50119/IEC 60050-811-33-45) Arrangement enabling the mechanical tension of conductors to be adjusted.(UIC R 791-2006)
Modem is a device that converts data into a format suitable for a transmission medium which can be copper cables or optical fibers.
(EN 13232-1-2004) fixed machined rail, ensuring the continuity on the main or diverging track with the switch in the open position. The machined part of the stock rail supports its switch rail in the closed position, giving continuity of line through this switch rail. The two stock rails in a set of switches are the two outside rails. A stock rail is described as right or left hand according to whether it is part of a right hand or left hand half-set of switches.
A device that is used to correct voltage umbalance in the system.
Indicates the production speed of the ticket. It is measured by counting the number of tickets that can be produced per hour."
Space that is reserved to install telecom equipment and facilities
The group which used to support directly contactline, feeder or earthwire, contains all the parts installed between supports and conductors(including insulators).
Indicates the resolution of the detected linear velocity."
A component of a repeater for coupling base station signals.
Protect equipment to ensure the normal transmission of track circuit and coded signal and prevent mutual interference of signals.
An electric conductor of an overhead contact line with which the current collectors make contact. Note: definition from IEC60050 811-33-15."
Indication of whether and by what means the sleeper has been waterproofed (esp. wooden sleepers) Ã contamination, for special disposal"
A non-negative length measure is a length measure that is greater than or equal to zero. Type: _IfcLengthMeasure_ > HISTORY&nbsp; New type in IFC4. bSI Documentation
A lineside equipment of the European Train Control SYstem (ETCS) level 2. It is a specialised computing device with specification SafetY integritY level 4 (SIL) for generating Movement Authorities (MA) and transmitting it to trains. It gets information from Signalling control and from the trains in its section. It hosts the specific geographic data of the railwaY section and receives crYptographic keYs from trains passing in. According to conditions, the RBC will attend the trains with MA until leaving the section.
Alternative to the distance along the starting point can also be defined with horizontal Cartesian coordinates (X, Y). "
Location of last continuous sleeper with regard to the start of the track edge"
It is a cabinet for storing station monitoring equipment.
Indication of the type of rack-rail (Abt, Morgan, Riggenbach, Strub, etc.)"
Define the rail joint sleeper method of assembly ("twin sleeper" type or "between sleepers" type)."
To indicate whether the current will go through the dropper."
In the geometry perspective it denotes a straight connection between two points. In the dynamic perspective, it denotes a segment with a curvature with a value of 0. This means that no lateral acceleration acts on the moving vehicle. **Base formula (Curvature) ** !["Horizontal line segment"](../../figures/ifcalignmenthorizontalsegmenttypeenum-line.png "Figure 1 &mdash; Curvature for horizontal straight line segment")"
Spatial relationship where one spatial element intersects with another spatial element at the same grade such as a level crossing or pedestrian crossing.
&lt;OR&gt; X,Y,Z coordinates in case of bumper situated outside of edge"
Special section bar (usually of steel) ensuring the guidance of the wheel of a rolling stock or other heavy machineries. In railway, two rails are combined to form the track.
Indicates the coupling loss of a leaky coaxial cable (radiating cable)."
èéæ§å¶åḞ It is used to place the interlocking system control equipment for the staff to operate the equipmentã
Electrical appliances used in circuits or power systems due to their inductance.(IEC 60050-811-26-19)
Cabinet of digital IT equipment control system
The cabinet is used for placing digital IT equipment control system
The cabinet is used for placing storage device
(PR EN_16843) Mechanical rail joint, electrically bounded, with expansion capacity which can accommodate longitudinal displacement of the jointed rail length.
Indicates the maximum number of remote radio units (RRU) which can be connected to the baseband unit."
Cabinet of interlocking system power supply
It is a cabinet for storing power supply equipment of interlocking system.
Date on which the object was (or will be) removed.. "
A fitting at which a branch is taken from the main route of the cable carrier."
Telecom plug allowing telephone or network access.
A control element at which alarms are annunciated."
In IFC CUBIC denotes a transition segment where x and y coordinates obey a cubic formula. **General formula** !["Cubic"](../../figures/ifcalignmenthorizontalsegmenttypeenum-cubic_general.png "Figure 1 &mdash; General formula for cubic")</Documentation> It was discovered very early that setting **a** to "1&nbsp;/&nbsp;6RL" and **b**, **c** and **d** to 0 yields a good enough approximation of the clothoid in many situations. **Cubic formula for alignment** !["Cubic transition"](../../figures/ifcalignmenthorizontalsegmenttypeenum-cubic.png "Figure 2 &mdash; Alignment formula for cubic")</Documentation> Since the manual computation of cubics was considerable easier compared to the theoretically sound clothoid, cubic transistions became very popular as "good enough" replacement curves. Cubic transition bends can still be found in many legacy alignments based on earlier design regulations. There also exist regulations containing cubic transitions for new designs. It is obvious that simple approximations cannot fulfil all requirements for a kinematically correct track design. For example, the requirement of tangential continuity has often been neglected in favour of lower design costs by using sufficiently good cubic curves. The cubic is known in two variants as **Cubic Parabola** or **Cubic Spiral** setting either the sinus or the cosinus of the deflection angle to 0."
Network management server（NMS）cabinet
Indicates number of relays built in the device."
Equipement dedicated to level crossing protection.
The equipment cabinet is usually made of cold-rolled steel or alloy for storing computer and related control equipment, and provides protection against electromagnetic interference.
Indicates the type of wire pair, i.e., twisted, untwisted or coaxial pair."
Direction in which the object is aligned; e.g. same direction as edge or opposite direction"
Indicates the type or manner of snow depth meter image shooting."
It is a cabinet for storing interface server of monitoring system.
Cabinet for interface server of monitoring system
For data ports, captures log of data received. The LIST at IfcTimeSeriesValue.Values may split out data according to Pset_DistributionPortTypeCable.Protocols."
Length of the section of the site where the path is present / [%]"
The system used to fix the rock bolt (tram rail, slab track) in place"
Part providing protection against direct contact from any usual direction of access.(IEC 60050-195-06-15)
A track edge is a linear object that connects exactly two track nodes. A track edge is straightened, branch-free and has a geometry with a length derived from it. The two relations 'from' and 'to' from track edge to track node must be present. They determine the direction of definition or referencing of the track edge.
Type of weld seam according to ISO 2553. Note, combined welds are given by two corresponding symbols in the direction of the normal axis of the coordinate system. For example, an X weld is specified by Type1 = ''V'' and Type2 = ''V''."
Does the sliding chair require maintenance? "
A transformer in which at least two windings have a common part (IEC - 811-26-03; 421-01-11)
Electrical connection between the contact line and sub-station or the switch station.(IEC 60050-811-36-08/UIC R 791-2006)
The maximum earth loop impedance upstream of a circuit (typically stated as the variable Zs). This value is for 55o C (130oF) Celsius usage."
Element that make the connections between ground and return circuit.
Indicates whether the on-site control unit includes an output function."
SCP has the service control function which includes the GSM-R intelligent network business logic. Through the SSP issued instructions, it completes the intelligent network business connection and billing control, in order to achieve some railway specific business. At the same time, it also has the service data function, including user data and network data, for the service control function to extract real-time GSM-R intelligent network service. Together with IP and SSP, it forms an intelligent network subsystem to separate network switching function from business control function and realize intelligent control of call.
The cabinet is used for placing database server
Length of the segment, calculated at midpoint of cross-section, equal to the distance between inlet and outlet ports."
Indication of whether the turnout has flexible tongues, loose heel turnouts or flexible tongues with dry sliding plates."
Data transmission rate between the device and the receiving module in bits per second."
A stitch wire consists of auxiliary wires and different components (clamp) used in stitched suspension."
Antenna is a device that effectively radiates or receives electromagnetic waves, coupling a transmission line to space or other media.
Provide Energy port for different low voltage services (signaling, telecom..)
Indicates the number of relays used for preventing earth fault."
Indicates whether the wire pair end point is joined to another wire pair end point by means of a welded junction."
Mooring System for overheadline is a common system provide functionnality of anchoring and stressing the ContactWire to have constant Tension in the cable.
A control element that senses multiple climate properties such as temperature, humidity, pressure, wind, and rain."
Curvature expansion to fit in curves with low radius in discussion."
Type of rail profiles which are connected by this joint"
Indicates the type of the device traffic interfaces."
The number of emergency buttons built in the device."
Cables and other facilities needed to connect OCS to substation and to low voltage services
The current of the electric actuator control pulse."
Special installation conditions relating to particular types of installation based on IEC60364-5-52:2001 reference installation methods C and D."
Horizontal cable supports fixed at one end only, spaced at intervals, on which cables rest.(IEC 60050-826-15-10)
This class collects all the objects related to laying infrastructure aimed to support or contain cables.
Uninterruptible power supply refers to the power supply equipment which will not be interrupted due to short power outages, and can always supply high-quality power, and effectively protect precision instruments. It provides continuous, stable and uninterrupted power supply for load equipment.
Control the entire network and manage protection control and auxiliaries services of traction power system.
Generic IP network equipment can represent all kind of IP network equipment, which provide IP data transmission channel for telecom subsystems or other subsystems e.g., routers, network switches or firewalls.
The reference design criteria for distance from the end of the rope to the fixed pulley.It defines the nominal distance in relation to temperature."
Basic protection against electric shock.
The time that axle counter can detect the axles of locomotive and vehicle."
Class as placeholder for the requirements of IFC-Road.
Minimum resistance between one terminal or several terminals connected together and the case or enclosure of a component at specified voltage."
A space that allows to access to the equipment from the front side. It is defined by the minimal distance that must be kept free in the front side of the equipement
Indicates the number of traffic interfaces on the device."
Installed in a rack, used for arranging the wires.
Any fitting which can be fixed on to a conductor.(IEC 60050-466-11-08)
Table mapping operation mode identifiers to descriptive labels, which may be used for interpreting Pset_UnitaryControlElementPHistory.Mode."
It is a cabinet for storing train control center host of relay station.
Cabinet for train control center of relay station
Measurement of the ability to withstand breakage under applied force."
Indicates the directional position of the cable arranger: vertical, horizontal, front or rear. It is relative to the element (usually a cabinet) that the cable arranger is affiliated."
Subtype of blade as a separated manufactured element (i.e. tramways)
TRAU is the data rate conversion unit, which performs transcoding function for speech channels and RA (Rate Adaptation) for data channels in the GSM network between BSC and MSC. Responsible for providing voice coding and rate adaptation between BSC and MSC and converting 16 kbit/s voice or data into 64 kbit/s data.
Indicates if the rail joint is associated to a continuous welded rail."
A cylindrical rod that is driven into holes of the connected pieces."
(EN 13481-1) : Beam, which may be composite in construction, which supports running rails, guard rails and check rails at right angles to its axis.
The foundation layer has a load-distributing function. It reduces the load resulting from the traffic load to the permissible values for the underlying layers. It protects the substrate from the harmful effects of frost.
Indicates whether the on-site control unit collects foreign object information."
Distribution frame is used to interconnect and manage wiring between active equipment and subscriber.
Indicates the vending machine payment method."
Working voltage of relay in excitation state."
A fitting that changes the route of the cable carrier."
Geometric primitive for transition curves. Attributes are defined in the class "Alignment Cant Segment" except the type of transition curve and initial and final radius.
A device which makes the operation of a switching device dependent upon the position or operation of one or more other pieces of equipment. (IEC 60050-441-16-49) Equipement for interdependent liaison between the control levers or the electric control circuits of different apparatus such as points and signals, which makes it impossible to place them in positions which are unsafe.
(PR EN_16843) Mechanical rail joint that connects two rails of the same profile, electrically bounded, without expansion capacity which can resist the forces in CWR
Combination of at least two predefined types of unitary control element."
The longitudinal system that supports the contact wire, including catenary wire dropper and stich wire.
The type of support used to fix the running rail in place"
For certain purposes of electrical regulations, IEC 60364 defines types of system using type identifiers. Assignment of identifiers depends upon the relationship of the source, and of exposed conductive parts of the installation, to Ground (Earth). Identifiers that may be assigned through IEC 60364 are: \X2\2022\X0\TN type system, a system having one or more points of the source of energy directly earthed, the exposed conductive parts of the installation being connected to that point by protective conductors, \X2\2022\X0\TN C type system, a TN type system in which neutral and protective functions are combined in a single conductor throughout the system, \X2\2022\X0\TN S type system, a TN type system having separate neutral and protective conductors throughout the system, \X2\2022\X0\TN C S type system, a TN type system in which neutral and protective functions are combined in a single conductor in part of the system, \X2\2022\X0\TT type system, a system having one point of the source of energy directly earthed, the exposed conductive parts of the installation being connected to earth electrodes electrically independent of the earth electrodes of the source, \X2\2022\X0\IT type system, a system having no direct connection between live parts and Earth, the exposed conductive parts of the electrical installation being earthed."
Cabinet for clock server of monitoring system
It is a cabinet for storing clock server of monitoring system.
Does the turnout makes a connection to another infrastructure owner (for sharing costs)"
Indicates whether the element is insulated or not."
Distance to start of track edge at front/rear end of object"
Device used to collect and indicate rainfall related information.
Individual segment along the _IfcAlignment2DHorizontal_, being defined in the x/y coordinate space. Each single horizontal alignment segment has an associated curve geometry. The following segment curve types are defined by the _CurveGeometry_: * for line segment - _IfcLineSegment2D_ * circular arc segment - _IfcCircularArcSegment2D_ * clothoidal arc segment - _IfcClothoidalArcSegment2D_ For each horizontal segment, the following non-redundant information is provided: * the start point (in x/y coordinates) * the start direction (in radians or degree, with local x (east) being 0, and increasing counter-clock wise) * the segment length * the curve parameter needed for circular and clothoidal arc segments The following information can be calculated (and is therefore not exchanged explicitly to avoid redundancy and inconsistencies) * the end point (from start point, direction, segment length and curve parameter) * the start distance along (from the end distance along of the previous segment, or the start distance along of the horizontal alignment (if it is the first segment) * the end distance along (from the start distance and the segment length) * the end direction (from the curve parameter, the start direction and the segment length) * the point of intersection (from the start direction and the end direction) The following checks can be done to validate the correct exchange: * continuity \X2\2013\X0\ does the calculated end point of the previous segment matches with the provided start point of this segment * tangential continuity \X2\2013\X0\ does the calculated end direction of the previous segment matches with the provided start direction of this segment bSI Documentation
Are there any contractual agreements, e.g. cost-sharing factor, snow removal, etc."
Describes the direction associated to the branch line of the turnout (deviated branch)."
How is the guard rail connected along its length (fish plate, weld, none)"
(EN 13232-1-2004) Consists of one stock rail and its switch rail complete with small fittings. It is right or left hand as seen by an observer in the centre of the track facing the switch heel from the switch toe.
Resistance when electrical node is closed."
Reference to which turnout panel the stock rail belongs to. Internal referencing"
The voltage that is going to be transformed and that runs into the transformer on the primary side."
Cabinet contaning the telecommunication equipment.
The expansion direction, e.g. single direction, bi-direction"
Optical fiber is used in telecommunication systems to transmit data by means of optical signals.
Number of poles that the equipment would affect."
(NF EN 13232-1-2004) Device which permits longitudinal relative rail movement of two adjacent rails, while maintaining correct guidance and support.
Indicates how the guard rail is connected along its length, when the fasteners are not explicitly modelled."
Electronic components that allows tunnel emergency telephones to establish calls with the operation center.
Assessment of the condition of the rail at point of installation."
Geometric primitive. All needed attributes are defined in the class "Alignment Cant Segment".
Corresponding type of turnout (single turnout, double-slip turnout)"
Indicates the number of fibers in the single tube or cable."
IfcBoolean is a defined data type of simple data type Boolean
Cable containing either fiber or copper wire used to transmit telecom signals, this class is a supertype of optical fiber cable and copper cable.
Rod, wire or cable, with a tensioner, to anchor a mast or a cantilever(IEC 60050-811-33-47/UIC R 791-2006)(tie, guy)
An optical cable segment is a cable segment that contains a variable number of optical fiber segments."
Indicates the bandwidth for telecommunication of the device."
A space that allows to access to the equipment from the left side. It is defined by the minimal distance that must be kept free in the left side of the equipement
Control equipment is mainly the peripheral equipment in the computer network, used for inputing control commands and outputing the process results.
Horizontal Cartesian coordinates (X, Y) of the starting point"
Installation which hinders road traffic passing the level crossing.
Indicates if the rail joint is insulated."
Indicates the measuring range of rain gauge."
Port of a telecom active equipment, used for wired connection.
Equipement used to control operational equipment at a distance using the transmission of information by telecommunication techniques. (IEC 60050-371-01-01)
Left turnout , right turnout , symmetrical (does not apply to double-slip turnouts)"
Copper patch cord, a subtype of copper cable, is a copper cable capped at either end with copper connectors that allow it to be rapidly and conveniently connected to other cable or to distribution panels.
CTCèḞåẃḊäẁ­åṡ CTC dispatching center centralized control railway signaling equipment and trains management of a certain range ãOperation Foundation of Railway Signalingã [ISBN 978-7-113-08943-6]
Conductor paralleling the track return and connected to the running rails at periodic intercals.(IEC 60050-811-35-13)
Value of the cant left at the end of the segment in [mm] "
Unique name of the turnout panel. Uniqueness is guaranteed over time."
An indoor space that is reserved for laying Telecom cables, ducts, tubes, gutters or manholes
Indoor laying infrastructure (routing) zone
Device used to measure the depth of snowfall.
HLR is a data base in charge of the management of mobile subscribers. Authentication Center (AuC) is always associated with an HLR, and stores an identity key for each mobile subscriber registered with the associated HLR.
The soil or ground resistance to electrical current from the cable fitting."
an electrical or electro-mechanical device for converting electric energy from one form to another such as converting between AC and DC; or changing the voltage or frequency; or some combination of these.
The termination point of an optical fiber. Each optical fiber has two termination points.
A transfer table, also known as a traverser, consists of a single length of track that can be moved from side to side, in a direction perpendicular to the track. There are often multiple tracks on one side of the table and a single or multiple track(s) on the other.
design / type / height [m] t.b.d. ask CRBIM@D&#252;sseldorf"
Electric circuit of which the rails of a track section form a part, with usually a source of current connected at one end and a detection device at the other end for detecting whether this track section is clear or occupied by a vehicle. In a continuous signalling system, the track circuit can be used to transmit information between the ground and the train. [source: IEC 60050-821]
Cabinet of interlocking system electronic terminal
It is a cabinet for storing the electronic terminal of interlocking system.
Distance to start of track edge at front/rear end of ballast bed"
Mechanical connector used to couple two cable endpoints, or to connect a cable endpoint to an equipment port. It is the supertype of telecom connector.
Distinguishes between Telecom and Power Supply cables."
Insulated return conductor forming part of the return circuit and connecting the rest of the return circuit of the sub-station.(UIC R 791-2006)
Track element at end of alignment Aggregation"
Alignment Horizontal Segment Transition Realisation"
Insulated joint with fishplate Realisation"
IfcMechanicalFastener.RAILFASTENING Aggregation"
Power supply facility spatial structure Aggregation"
IfcDistributionSystem.OVERHEAD_CONTACTLINE_SYSTEM Aggregation"
Indoor laying infrastructure (routing) zone Association"
Indoor telecom equipment zone Association"
IfcElementAssembly.DILATATIONPANEL Aggregation"
IfcAudioVisualAppliance.COMMUNICATIONTERMINAL Aggregation"
IfcCommunicationsAppliance.ANTENNA Aggregation"
A track section has one or more alignments."
IfcCableCarrierSegment.CONDUITSEGMENT Aggregation"
IfcCommunicationsAppliance.TELECOMMAND Aggregation"
IfcElementAssembly.SUSPENSIONASSEMBLY Aggregation"
Operational telephony system Realisation"
IfcDiscreteAccessory.SLIDINGCHAIR Aggregation"
IfcElementAssembly.TRACKPANEL Aggregation"
Overhead contact line system Aggregation"
Passive electronic component of track circuit Realisation"
IfcDiscreteAccessory.INSULATOR Aggregation"
IfcMechanicalFastener.ANCHORBOLT Aggregation"
Input/output device of track circuit Realisation"
Point machine mounting device Aggregation"
Alignment Horizontal Segment Arc Realisation"
Abs_Signalling non-trackside equipment Association"
Substation control equipment Aggregation"
IfcDiscreteAccessory.CABLEARRANGER Aggregation"
Copper symmetric pair cable Realisation"
IfcCableSegment.CONDUCTORSEGMENT Aggregation"
IfcCommunicationsAppliance.TRANSPORTEQUIPMENT Aggregation"
Traction switching equipement Aggregation"
IfcElectricAppliance.VENDINGMACHINE Aggregation"
IfcMobileTelecommunicationsAppliance.BASEBANDUNIT Aggregation"
IfcActuator.ELECTRICACTUATOR Aggregation"
Alignment Vertical Segment Arc Realisation"
Telecom laying infrastructure connection point Association"
Telecom laying infrastructure zone Aggregation"
Telecom laying infrastructure Aggregation"
IfcDistributionChamberElement.INSPECTIONCHAMBER Aggregation"
IfcDiscreteAccessory.RAIL_LUBRICATION Aggregation"
Equipment identity register Realisation"
IfcElementAssembly.SUPPORTINGASSEMBLY Aggregation"
IfcCableCarrierSegment.CABLETRAYSEGMENT Aggregation"
Electric distribution board Realisation"
IfcSensor.FOREIGNOBJECTDETECTIONSENSOR Aggregation"
Alignment Vertical Segment Transition Realisation"
Alignment Vertical Segment Line Realisation"
LR Segment on track centreline Association"
LR Point on track centerline Association"
Point machine mounting device Realisation"
Passive electronic component of track circuit Aggregation"
Telecom support infrastructure Association"
IfcMobileTelecommunicationsAppliance.ACCESSPOINT Aggregation"
Not Insulated joint with fishplate Realisation"
IfcMobileTelecommunicationsAppliance.MOBILESWITCHINGCENTER Aggregation"
Human computer interaction terminal Aggregation"
IfcCommunicationsAppliance.MODEM Aggregation"
Railway self service identity verification gate Realisation"
Traction switching equipement Realisation"
Dilatation/Turnout Asset version Association"
Overhead line infrastructure reservation Aggregation"
IfcCableSegment.CONTACTWIRESEGMENT Aggregation"
Foreign object dual power network sensor Realisation"
Alignment Lateral Inclination Aggregation"
IfcCableSegment.WIREPAIRSEGMENT Aggregation"
Human computer interaction terminal Realisation"
IfcCableCarrierSegment.CATENARYWIRE Aggregation"
IfcDiscreteAccessory.SOUNDABSORPTION Aggregation"
IfcDiscreteAccessory.TENSIONINGEQUIPMENT Aggregation"
Plain track super structure Association"
IfcProtectiveDevice.ANTI_ARCING_DEVICE Aggregation"
IfcDistributionSystem.ELECTRICAL Aggregation"
IfcCommunicationsAppliance.AUTOMATON Aggregation"
Energy to train transmission system Aggregation"
Plain track super structure Aggregation"
IfcElectricFlowStorageDevice.CAPACITOR Aggregation"
Energy underground line zone Aggregation"
Telecom laying infrastructure Association"
IfcCableSegment.CABLESEGMENT Aggregation"
IfcDistributionChamberElement.MANHOLE Aggregation"
IfcElementAssembly.RIGID_FRAME Aggregation"
IfcElementAssembly.TURNOUTPANEL Aggregation"
Track element at end of alignment Realisation"
Alignment Horizontal Segment Aggregation"
IfcMobileTelecommunicationsAppliance.REMOTERADIOUNIT Aggregation"
IfcMobileTelecommunicationsAppliance.REMOTEUNIT Aggregation"
Substation control equipment Realisation"
IfcSystemFurnitureElement.SUBRACK Aggregation"
IfcDistributionChamberElement.INSPECTIONPIT Aggregation"
IfcDiscreteAccessory.RAILPAD Aggregation"
IfcElectricFlowStorageDevice.BATTERY Aggregation"
Outdoor telecom equipment zone Association"
Outdoor laying infrastructure (routing) zone Association"
Input/output device of track circuit Aggregation"
IfcMobileTelecommunicationsAppliance.MASTERUNIT Aggregation"
IfcMobileTelecommunicationsAppliance.E_UTRAN_NODE_B Aggregation"
IfcCableSegment.CORESEGMENT Aggregation"
Linear reference on abs track part Association"
IfcElectricFlowStorageDevice.INDUCTOR Aggregation"
Tunnel emergency telephone exchange Realisation"
IfcSensor.TURNOUTCLOSURESENSOR Aggregation"
Power supply facility spatial structure Association"
Wireless communication port Realisation"
IfcDiscreteAccessory.RAILBRACE Aggregation"
IfcCableSegment.FIBERSEGMENT Aggregation"
IfcActuator.HYDRAULICACTUATOR Aggregation"
IfcMechanicalFastener.RAILJOINT Aggregation"
IfcCommunicationsAppliance.TELEPHONYEXCHANGE Aggregation"
Trackside telephony exchange Realisation"
Telecom support infrastructure Aggregation"
IfcCommunicationsAppliance.COMPUTER Aggregation"
IfcDistributionChamberElement.FORMEDDUCT Aggregation"
Alignment Cant Segment Line Realisation"
IfcDistributionChamberElement.TRENCH Aggregation"
IfcUnitaryControlElement.BASESTATIONCONTROLLER Aggregation"
IfcCommunicationsAppliance.TRANSPONDER Aggregation"
Rigid catenary grounding clamp Aggregation"
IfcLightFixture.SECURITYLIGHTING Aggregation"
IfcSwitchingDevice.EMERGENCYSTOP Aggregation"
Alignment Cant Segment Transition Realisation"
IfcMobileTelecommunicationsAppliance.MSCSERVER Aggregation"
IfcCableSegment.BUSBARSEGMENT Aggregation"
IfcCableSegment.OPTICALCABLESEGMENT Aggregation"
Telecom laying infrastructure connection point Realisation"
IfcUnitaryControlElement.CONTROLPANEL Aggregation"
IfcDiscreteAccessory.BRACKET Aggregation"
IfcCableCarrierSegment.DROPPER Aggregation"
IfcProtectiveDevice.FUSEDISCONNECTOR Aggregation"
Turnout signalling equipment Association"
IfcMechanicalFastener.COUPLER Aggregation"
Abs_Track strengthening equipment Aggregation"
IfcElementAssembly.TRACTION_SWITCHING_ASSEMBLY Aggregation"
Electric distribution board Aggregation"
IfcElectricFlowStorageDevice.RECHARGER Aggregation"
IfcMobileTelecommunicationsAppliance.BASETRANSCEIVERSTATION Aggregation"
IfcSwitchingDevice.SELECTORSWITCH Aggregation"
Alignment Horizontal Segment Line Realisation"
IfcElectricFlowTreatmentDevice.ELECTRONICFILTER Aggregation"
Wireless communication port Aggregation"
IfcDistributionBoard.DISTRIBUTIONFRAME Aggregation"
Overhead contact line system Realisation"