Industry Foundation Classes (IFC) Supported Element Types

This section provides an overview of the IFC elements currently supported by the IFC_API reader/writer.

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Supported Element Types
IfcActor
IfcAirTerminal
IfcAirTerminalBox
IfcAlignment
IfcAlignmentCant
IfcAlignmentHorizontal
IfcAlignmentSegment
IfcAlignmentVertical
IfcAnnotation
IfcAudioVisualAppliance
IfcBeam
IfcBearing
IfcBridge
IfcBridgePart
IfcBuilding
IfcBuildingElementPart
IfcBuildingElementProxy
IfcBuildingStorey
IfcBuildingSystem
IfcBuiltElement
IfcBuiltSystem
IfcCableCarrierFitting
IfcCableCarrierSegment
IfcCableFitting
IfcCableSegment
IfcChimney
IfcColumn
IfcCommunicationsAppliance
IfcCompressor
IfcConveyorSegment
IfcCourse
IfcCovering
IfcCurtainWall
IfcDamper
IfcDeepFoundation
IfcDistributionBoard
IfcDistributionChamberElement
IfcDistributionFlowElement
IfcDistributionPort
IfcDistributionSystem
IfcDoor
IfcDuctFitting
IfcDuctSegment
IfcDuctSilencer
IfcElectricAppliance
IfcElectricDistributionBoard
IfcElectricFlowTreatmentDevice
IfcElectricTimeControl
IfcFacilityPartCommon
IfcFan
IfcFilter
IfcFireSuppressionTerminal
IfcFlowMeter
IfcFooting
IfcGeographicElement
IfcInterceptor
IfcJunctionBox
IfcKerb
IfcLamp
IfcLightFixture
IfcLiquidTerminal
IfcMarineFacility
IfcMarinePart
IfcMedicalDevice
IfcMember
IfcMobileTelecommunicationsAppliance
IfcOpeningElement
IfcOutlet
IfcPipeFitting
IfcPipeSegment
IfcPlate
IfcProtectiveDevice
IfcPump
IfcRail
IfcRailing
IfcRailway
IfcRailwayPart
IfcRamp
IfcRampFlight
IfcRoad
IfcRoadPart
IfcRoof
IfcSanitaryTerminal
IfcSignal
IfcSite
IfcSlab
IfcSpace
IfcSpaceHeater
IfcStackTerminal
IfcStair
IfcStairFlight
IfcStructuralAnalysisModel
IfcSwitchingDevice
IfcValve
IfcWasteTerminal
IfcWindow
IfcZone

Element Types

Actor

The Actor feature type represents IfcActor elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_actor_type	Type of Actor. The possible types are: Person Organization PersonAndOrganization

Attribute/Trait Name

Contents

ifc_actor_type

Type of Actor. The possible types are:

Person
Organization
PersonAndOrganization

AirTerminal

The AirTerminal feature type represents IfcAirTerminal elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of AirTerminal. The possible types are: DIFFUSER GRILLE LOUVRE REGISTER USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of AirTerminal. The possible types are:

DIFFUSER
GRILLE
LOUVRE
REGISTER
USERDEFINED
NOTDEFINED

AirTerminalBox

The AirTerminalBox feature type represents IfcAirTerminalBox elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of AirTerminalBox. The possible types are: CONSTANTFLOW VARIABLEFLOWPRESSUREDEPENDANT VARIABLEFLOWPRESSUREINDEPENDANT USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of AirTerminalBox. The possible types are:

CONSTANTFLOW
VARIABLEFLOWPRESSUREDEPENDANT
VARIABLEFLOWPRESSUREINDEPENDANT
USERDEFINED
NOTDEFINED

Alignment

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Alignment feature type represents IfcAlignment elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Alignment. The possible types are: USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Alignment. The possible types are:

USERDEFINED
NOTDEFINED

Alignment Cant

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Alignment Cant feature type represents IfcAlignmentCant elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_rail_head_distance	Distance between the nominal center points of the two contact patches of wheel set and rails.

Alignment Horizontal

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Alignment Horizontal feature type represents IfcAlignmentHorizontal elements in the dataset. It does not have any unique attributes.

Alignment Segment

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Alignment Segment feature type represents IfcAlignmentSegment elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_segment_type	The type of Alignment Segment, which could be ifcalignmentcantsegment, ifcalignmenthorizontalsegment, or ifcalignmentverticalsegment. Note Some attributes in the table are dependent on the selected segment type. The attributes displayed will vary based on the specific alignment segment.
ifc_start_dist_along	Distance along the horizontal alignment. Note Displayed only when segment type is ifcalignmentverticalsegment and ifcalignmentcantsegment.
ifc_horizontal_length	Total length of the segment. Note Displayed only when segment type is ifcalignmentverticalsegment and ifcalignmentcantsegment.
ifc_start_cant_left	Length of left cant at the beginning of the segment. Note Displayed only when segment type is ifcalignmentcantsegment.
ifc_end_cant_left	Length of left cant at the end of the segment. Note Displayed only when segment type is ifcalignmentcantsegment.
ifc_start_cant_right	Length of the right cant at the start of the segment. Note Displayed only when segment type is ifcalignmentcantsegment.
ifc_end_cant_right	Length of the right cant at the end of the segment. Note Displayed only when segment type is ifcalignmentcantsegment.
ifc_start_point.x	The x-coordinate of the start point of the segment. Note Displayed only when segment type is ifcalignmenthorizontalsegment.
ifc_start_point.y	The y-coordinate of the start point of the segment. Note Displayed only when segment type is ifcalignmenthorizontalsegment.
ifc_start_direction	Direction of the tangent at the start point of the alignment segment. Note Displayed only when segment type is ifcalignmenthorizontalsegment.
ifc_start_radius_of_curvature	Radius of the curvature at the start point of the segment. Note Displayed only when segment type is ifcalignmenthorizontalsegment.
ifc_segment_length	Total length of the segment along the curve. Note Displayed only when segment type is ifcalignmenthorizontalsegment.
ifc_gravity_center_line_height	Height of the gravity center line in the vertical direction. Note Displayed only when segment type is ifcalignmenthorizontalsegment.
ifc_start_height	Elevation of the start point. Note Displayed only when segment type is ifcalignmentverticalsegment.
ifc_start_gradient	Gradient of the alignment segment at the start point. Note Displayed only when segment type is ifcalignmentverticalsegment.
ifc_end_gradient	Gradient of the alignment segment at the end point. Note Displayed only when segment type is ifcalignmentverticalsegment.
ifc_radius_of_curvature	Radius of the curvature for the segment. Note Displayed only when segment type is ifcalignmentverticalsegment.
ifc_predefined_type	Type of selected Alignment Segment. The possible types are: ifcalignmentcantsegment LINE CIRCULARARC CLOTHOID COSINECURVE CUBIC HELMERTCURVE SINECURVE VIENNSEBEND ifcalignmenthorizontalsegment BLOSSCURCE CONSTANTCANT COSINECURVE HELMERTCURVE LINEARTRANSITION SINECURVE VIENNSEBEND ifcalignmentverticalsegment CONSTANTGRADIENT PARABOLICARC CIRCULARARC CLOTHOID Note Displayed for all segment types.
ifc_start_tag	Tag to annotate the start point of the alignment segment.
ifc_end_tag	Tag to annotate the end point of the alignment segment.

Alignment Vertical

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Alignment Vertical feature type represents IfcAlignmentVertical elements in the dataset. It does not have any unique attributes.

Annotation

The Annotation feature type represents IfcAnnotation elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Annotation. The possible types are: CONTOURLINE DIMENSION ISOBAR ISOLUX ISOTHERM LEADER SURVEY SYMBOL TEXT USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Annotation. The possible types are:

CONTOURLINE
DIMENSION
ISOBAR
ISOLUX
ISOTHERM
LEADER
SURVEY
SYMBOL
TEXT
USERDEFINED
NOTDEFINED

AudioVisualAppliance

The AudioVisualAppliance feature type represents IfcAudioVisualAppliance elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of AudioVisualAppliance. The possible types are: AMPLIFIER CAMERA COMMUNICATIONTERMINAL DISPLAY MICROPHONE PLAYER PROJECTOR RECEIVER RECORDINGEQUIPMENT SPEAKER SWITCHER TELEPHONE TUNER USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of AudioVisualAppliance. The possible types are:

AMPLIFIER
CAMERA
COMMUNICATIONTERMINAL
DISPLAY
MICROPHONE
PLAYER
PROJECTOR
RECEIVER
RECORDINGEQUIPMENT
SPEAKER
SWITCHER
TELEPHONE
TUNER
USERDEFINED
NOTDEFINED

Beam

The Beam feature type represents IfcBeam elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Beam. The possible types are: BEAM CORNICE DIAPHRAGM EDGEBEAM GIRDER_SEGMENT HATSTONE HOLLOWCORE JOIST LINTEL PIERCAP SPANDREL T_BEAM USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Beam. The possible types are:

BEAM
CORNICE
DIAPHRAGM
EDGEBEAM
GIRDER_SEGMENT
HATSTONE
HOLLOWCORE
JOIST
LINTEL
PIERCAP
SPANDREL
T_BEAM
USERDEFINED
NOTDEFINED

Bearing

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Bearing feature type represents IfcBearing elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Bearing. The possible types are: CYLINDRICAL DISK ELASTOMERIC GUIDE POT ROCKER ROLLER SPHERICAL USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Bearing. The possible types are:

CYLINDRICAL
DISK
ELASTOMERIC
GUIDE
POT
ROCKER
ROLLER
SPHERICAL
USERDEFINED
NOTDEFINED

Bridge

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Bridge feature type represents IfcBridge elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Bridge. The possible types are: ARCHED CABLE_STAYED CANTILEVER CULVERT FRAMEWORK GIRDER SUSPENSION TRUSS USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Bridge. The possible types are:

ARCHED
CABLE_STAYED
CANTILEVER
CULVERT
FRAMEWORK
GIRDER
SUSPENSION
TRUSS
USERDEFINED
NOTDEFINED

BridgePart

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The BridgePart feature type represents IfcBridgePart elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of BridgePart. The possible types are: ABUTMENT DECK DECK_SEGMENT FOUNDATION PIER PIER_SEGMENT PYLON SUBSTRUCTURE SUPERSTRUCTURE SURFACESTRUCTURE USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of BridgePart. The possible types are:

ABUTMENT
DECK
DECK_SEGMENT
FOUNDATION
PIER
PIER_SEGMENT
PYLON
SUBSTRUCTURE
SUPERSTRUCTURE
SURFACESTRUCTURE
USERDEFINED
NOTDEFINED

Building

The Building feature type represents IfcBuilding elements in the dataset.

Attribute/Trait Name	Contents
ifc_elevation_of_ref_height	The value of the building’s ElevationOfRefHeight property. Note This property is deprecated in IFC 4x3 and will be dropped when writing to that schema.
ifc_elevation_of_terrain	The value of the building’s ElevationOfTerrain property. Note This property is deprecated in IFC 4x3 and will be dropped when writing to that schema.
BuildingAddress	The value of the building’s BuildingAddress property. This attribute will be read as an address, with several BuildingAddress.* sub-attributes. Note This property has been deprecated in IFC 4x3. When writing to IFC 4x3, this attribute will be written as the Pset_Address.

Building Element Part

The Building Element Part feature type represents IfcBuildingElementPart elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Building Element Part. The possible types are: APRON ARMOURUNIT INSULATION PRECASTPANEL SAFETYCAGE USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Building Element Part. The possible types are:

APRON
ARMOURUNIT
INSULATION
PRECASTPANEL
SAFETYCAGE
USERDEFINED
NOTDEFINED

Building Element Proxy

The Building Element Proxy feature type represents IfcBuildingElementProxy elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Building Element Proxy. The possible types are: COMPLEX ELEMENT PARTIAL PROVISIONFORSPACE PROVISIONFORVOID USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Building Element Proxy. The possible types are:

COMPLEX
ELEMENT
PARTIAL
PROVISIONFORSPACE
PROVISIONFORVOID
USERDEFINED
NOTDEFINED

Building Storey

The Building Storey feature type represents IfcBuildingStorey elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_elevation	Represents the vertical position of the storey's base relative to the building’s internal 0.00 reference level.

BuildingSystem

Note This element type is deprecated in IFC 4x3 but supported in IFC 4.

The BuildingSystem feature type represents IfcBuildingSystem elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of BuildingSystem. The possible types are: FENESTRATION FOUNDATION LOADBEARING OUTERSHELL SHADING TRANSPORT USERDEFINED NOTDEFINED
ifc_longname	Long name of BuildingSystem.

Attribute/Trait Name

Contents

ifc_predefined_type

Type of BuildingSystem. The possible types are:

FENESTRATION
FOUNDATION
LOADBEARING
OUTERSHELL
SHADING
TRANSPORT
USERDEFINED
NOTDEFINED

ifc_longname

Long name of BuildingSystem.

BuiltElement

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The BuiltElement feature type represents IfcBuiltElement elements in the dataset. Prior to IFC4x3, this was referred to as IfcBuildingElement and uninstantiable. In IFC4x3, this type is instantiable and has no unique attributes.

BuiltSystem

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The BuiltSystem feature type represents IfcBuiltSystem elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of BuiltSystem. The possible types are: EROSIONPREVENTION FENESTRATION FOUNDATION LOADBEARING MOORING OUTERSHELL PRESTRESSING RAILWAYLINE RAILWAYTRACK REINFORCING SHADING TRACKCIRCUIT TRANSPORT USERDEFINED NOTDEFINED
ifc_longname	Long name of BuiltSystem.

Attribute/Trait Name

Contents

ifc_predefined_type

Type of BuiltSystem. The possible types are:

EROSIONPREVENTION
FENESTRATION
FOUNDATION
LOADBEARING
MOORING
OUTERSHELL
PRESTRESSING
RAILWAYLINE
RAILWAYTRACK
REINFORCING
SHADING
TRACKCIRCUIT
TRANSPORT
USERDEFINED
NOTDEFINED

ifc_longname

Long name of BuiltSystem.

CableCarrierFitting

The CableCarrierFitting feature type represents IfcCableCarrierFitting elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of CableCarrierFitting. The possible types are: BEND CONNECTOR JUNCTION TRANSITION USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of CableCarrierFitting. The possible types are:

BEND
CONNECTOR
JUNCTION
TRANSITION
USERDEFINED
NOTDEFINED

CableCarrierSegment

The CableCarrierSegment feature type represents IfcCableCarrierSegment elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of CableCarrierSegment. The possible types are: CABLEBRACKET CABLELADDERSEGMENT CABLETRAYSEGMENT CABLETRUNKINGSEGMENT CATENARYWIRE CONDUITSEGMENT DROPPER USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of CableCarrierSegment. The possible types are:

CABLEBRACKET
CABLELADDERSEGMENT
CABLETRAYSEGMENT
CABLETRUNKINGSEGMENT
CATENARYWIRE
CONDUITSEGMENT
DROPPER
USERDEFINED
NOTDEFINED

CableFitting

The CableFitting feature type represents IfcCableFitting elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of CableFitting. The possible types are: CONNECTOR ENTRY EXIT FANOUT JUNCTION TRANSITION USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of CableFitting. The possible types are:

CONNECTOR
ENTRY
EXIT
FANOUT
JUNCTION
TRANSITION
USERDEFINED
NOTDEFINED

CableSegment

The CableSegment feature type represents IfcCableSegment elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of CableSegment. The possible types are: BUSBARSEGMENT CABLESEGMENT CONDUCTORSEGMENT CONTACTWIRESEGMENT CORESEGMENT FIBERSEGMENT FIBERTUBE OPTICALCABLESEGMENT STITCHWIRE WIREPAIRSEGMENT USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of CableSegment. The possible types are:

BUSBARSEGMENT
CABLESEGMENT
CONDUCTORSEGMENT
CONTACTWIRESEGMENT
CORESEGMENT
FIBERSEGMENT
FIBERTUBE
OPTICALCABLESEGMENT
STITCHWIRE
WIREPAIRSEGMENT
USERDEFINED
NOTDEFINED

Chimney

The Chimney feature type represents IfcChimney elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Chimney. The possible types are: USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Chimney. The possible types are:

USERDEFINED
NOTDEFINED

Column

The Column feature type represents IfcColumn elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Column. The possible types are: COLUMN PIERSTEM PIERSTEM_SEGMENT PILASTER STANDCOLUMN USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Column. The possible types are:

COLUMN
PIERSTEM
PIERSTEM_SEGMENT
PILASTER
STANDCOLUMN
USERDEFINED
NOTDEFINED

CommunicationsAppliance

The CommunicationsAppliance feature type represents IfcCommunicationsAppliance elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of CommunicationsAppliance. The possible types are: ANTENNA AUTOMATON COMPUTER FAX GATEWAY INTELLIGENTPERIPHERAL IPNETWORKEQUIPMENT LINESIDEELECTRONICUNIT MODEM NETWORKAPPLIANCE NETWORKBRIDGE NETWORKHUB OPTICALLINETERMINAL OPTICALNETWORKUNIT PRINTER RADIOBLOCKCENTER REPEATER ROUTER SCANNER TELECOMMAND TELEPHONYEXCHANGE TRANSITIONCOMPONENT TRANSPONDER TRANSPORTEQUIPMENT USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of CommunicationsAppliance. The possible types are:

ANTENNA
AUTOMATON
COMPUTER
FAX
GATEWAY
INTELLIGENTPERIPHERAL
IPNETWORKEQUIPMENT
LINESIDEELECTRONICUNIT
MODEM
NETWORKAPPLIANCE
NETWORKBRIDGE
NETWORKHUB
OPTICALLINETERMINAL
OPTICALNETWORKUNIT
PRINTER
RADIOBLOCKCENTER
REPEATER
ROUTER
SCANNER
TELECOMMAND
TELEPHONYEXCHANGE
TRANSITIONCOMPONENT
TRANSPONDER
TRANSPORTEQUIPMENT
USERDEFINED
NOTDEFINED

Compressor

The Compressor feature type represents IfcCompressor elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Compressor. The possible types are: BOOSTER DYNAMIC HERMETIC OPENTYPE RECIPROCATING ROLLINGPISTON ROTARY ROTARYVANE SCROLL SEMIHERMETIC SINGLESCREW SINGLESTAGE TROCHOIDAL TWINSCREW WELDEDSHELLHERMETIC USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Compressor. The possible types are:

BOOSTER
DYNAMIC
HERMETIC
OPENTYPE
RECIPROCATING
ROLLINGPISTON
ROTARY
ROTARYVANE
SCROLL
SEMIHERMETIC
SINGLESCREW
SINGLESTAGE
TROCHOIDAL
TWINSCREW
WELDEDSHELLHERMETIC
USERDEFINED
NOTDEFINED

ConveyorSegment

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The ConveyorSegment feature type represents IfcConveyorSegment elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of ConveyorSegment. The possible types are: BELTCONVEYOR BUCKETCONVEYOR CHUTECONVEYOR SCREWCONVEYOR USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of ConveyorSegment. The possible types are:

BELTCONVEYOR
BUCKETCONVEYOR
CHUTECONVEYOR
SCREWCONVEYOR
USERDEFINED
NOTDEFINED

Course

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Course feature type represents IfcCourse elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Course. The possible types are: ARMOUR BALLASTBED CORE FILTER PAVEMENT PROTECTION USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Course. The possible types are:

ARMOUR
BALLASTBED
CORE
FILTER
PAVEMENT
PROTECTION
USERDEFINED
NOTDEFINED

Covering

The Covering feature type represents IfcCovering elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Covering. The possible types are: CEILING CLADDING COPING FLOORING INSULATION MEMBRANE MOLDING ROOFING SKIRTINGBOARD SLEEVING TOPPING WRAPPING USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Covering. The possible types are:

CEILING
CLADDING
COPING
FLOORING
INSULATION
MEMBRANE
MOLDING
ROOFING
SKIRTINGBOARD
SLEEVING
TOPPING
WRAPPING
USERDEFINED
NOTDEFINED

Curtain Wall

The Curtain Wall feature type represents IfcCurtainWall elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Curtain Wall. The possible types are : USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Curtain Wall. The possible types are :

USERDEFINED
NOTDEFINED

Damper

The Damper feature type represents IfcDamper elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Damper. The possible types are : BACKDRAFTDAMPER BALANCINGDAMPER BLASTDAMPER CONTROLDAMPER FIREDAMPER FIRESMOKEDAMPER FUMEHOODEXHAUST GRAVITYDAMPER GRAVITYRELIEFDAMPER RELIEFDAMPER SMOKEDAMPER USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Damper. The possible types are :

BACKDRAFTDAMPER
BALANCINGDAMPER
BLASTDAMPER
CONTROLDAMPER
FIREDAMPER
FIRESMOKEDAMPER
FUMEHOODEXHAUST
GRAVITYDAMPER
GRAVITYRELIEFDAMPER
RELIEFDAMPER
SMOKEDAMPER
USERDEFINED
NOTDEFINED

Deep Foundation

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Deep Foundation feature type represents IfcDeepFoundation elements in the dataset. It does not have any unique attributes.

DistributionBoard

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The DistributionBoard feature type represents IfcDistributionBoard elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of DistributionBoard. The possible types are: CONSUMERUNIT DISPATCHINGBOARD DISTRIBUTIONBOARD DISTRIBUTIONFRAME MOTORCONTROLCENTRE SWITCHBOARD USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of DistributionBoard. The possible types are:

CONSUMERUNIT
DISPATCHINGBOARD
DISTRIBUTIONBOARD
DISTRIBUTIONFRAME
MOTORCONTROLCENTRE
SWITCHBOARD
USERDEFINED
NOTDEFINED

DistributionChamberElement

The DistributionChamberElement feature type represents IfcDistributionChamberElement elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of DistributionChamberElement. The possible types are: FORMEDDUCT INSPECTIONCHAMBER INSPECTIONPIT MANHOLE METERCHAMBER SUMP TRENCH VALVECHAMBER USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of DistributionChamberElement. The possible types are:

FORMEDDUCT
INSPECTIONCHAMBER
INSPECTIONPIT
MANHOLE
METERCHAMBER
SUMP
TRENCH
VALVECHAMBER
USERDEFINED
NOTDEFINED

DistributionFlowElement

The DistributionFlowElement feature type represents IfcDistributionFlowElement elements in the dataset.

DistributionPort

The DistributionPort feature type represents IfcDistributionPort elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_flow_direction	Type of FlowDirection. The possible types are: SINK SOURCE SOURCEANDSINK NOTDEFINED
ifc_predefined_type	Type of DistributionPort. The possible types are: CABLE CABLECARRIER DUCT PIPE WIRELESS USERDEFINED NOTDEFINED
ifc_system_type	Type of DistributionSystem. The possible types are: AIRCONDITIONING AUDIOVISUAL CATENARY_SYSTEM CHEMICAL CHILLEDWATER COMMUNICATION COMPRESSEDAIR CONDENSERWATER CONTROL CONVEYING DATA DISPOSAL DOMESTICCOLDWATER DOMESTICHOTWATER DRAINAGE EARTHING ELECTRICAL ELECTROACOUSTIC EXHAUST FIREPROTECTION FIXEDTRANSMISSIONNETWORK FUEL GAS HAZARDOUS HEATING LIGHTING LIGHTNINGPROTECTION MOBILENETWORK MONITORINGSYSTEM MUNICIPALSOLIDWASTE OIL OPERATIONAL OPERATIONALTELEPHONYSYSTEM OVERHEAD_CONTACTLINE_SYSTEM POWERGENERATION RAINWATER REFRIGERATION RETURN_CIRCUIT SECURITY SEWAGE SIGNAL STORMWATER TELEPHONE TV VACUUM VENT VENTILATION WASTEWATER WATERSUPPLY USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_flow_direction

Type of FlowDirection. The possible types are:

SINK
SOURCE
SOURCEANDSINK
NOTDEFINED

ifc_predefined_type

Type of DistributionPort. The possible types are:

CABLE
CABLECARRIER
DUCT
PIPE
WIRELESS
USERDEFINED
NOTDEFINED

ifc_system_type

Type of DistributionSystem. The possible types are:

AIRCONDITIONING
AUDIOVISUAL
CATENARY_SYSTEM
CHEMICAL
CHILLEDWATER
COMMUNICATION
COMPRESSEDAIR
CONDENSERWATER
CONTROL
CONVEYING
DATA
DISPOSAL
DOMESTICCOLDWATER
DOMESTICHOTWATER
DRAINAGE
EARTHING
ELECTRICAL
ELECTROACOUSTIC
EXHAUST
FIREPROTECTION
FIXEDTRANSMISSIONNETWORK
FUEL
GAS
HAZARDOUS
HEATING
LIGHTING
LIGHTNINGPROTECTION
MOBILENETWORK
MONITORINGSYSTEM
MUNICIPALSOLIDWASTE
OIL
OPERATIONAL
OPERATIONALTELEPHONYSYSTEM
OVERHEAD_CONTACTLINE_SYSTEM
POWERGENERATION
RAINWATER
REFRIGERATION
RETURN_CIRCUIT
SECURITY
SEWAGE
SIGNAL
STORMWATER
TELEPHONE
TV
VACUUM
VENT
VENTILATION
WASTEWATER
WATERSUPPLY
USERDEFINED
NOTDEFINED

DistributionSystem

The DistributionSystem feature type represents IfcDistributionSystem elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_longname	Long name of DistributionSystem.
ifc_predefined_type	Type of DistributionSystem. The possible types are: AIRCONDITIONING AUDIOVISUAL CATENARY_SYSTEM CHEMICAL CHILLEDWATER COMMUNICATION COMPRESSEDAIR CONDENSERWATER CONTROL CONVEYING DATA DISPOSAL DOMESTICCOLDWATER DOMESTICHOTWATER DRAINAGE EARTHING ELECTRICAL ELECTROACOUSTIC EXHAUST FIREPROTECTION FIXEDTRANSMISSIONNETWORK FUEL GAS HAZARDOUS HEATING LIGHTING LIGHTNINGPROTECTION MOBILENETWORK MONITORINGSYSTEM MUNICIPALSOLIDWASTE OIL OPERATIONAL OPERATIONALTELEPHONYSYSTEM OVERHEAD_CONTACTLINE_SYSTEM POWERGENERATION RAINWATER REFRIGERATION RETURN_CIRCUIT SECURITY SEWAGE SIGNAL STORMWATER TELEPHONE TV VACUUM VENT VENTILATION WASTEWATER WATERSUPPLY USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_longname

Long name of DistributionSystem.

ifc_predefined_type

Type of DistributionSystem. The possible types are:

AIRCONDITIONING
AUDIOVISUAL
CATENARY_SYSTEM
CHEMICAL
CHILLEDWATER
COMMUNICATION
COMPRESSEDAIR
CONDENSERWATER
CONTROL
CONVEYING
DATA
DISPOSAL
DOMESTICCOLDWATER
DOMESTICHOTWATER
DRAINAGE
EARTHING
ELECTRICAL
ELECTROACOUSTIC
EXHAUST
FIREPROTECTION
FIXEDTRANSMISSIONNETWORK
FUEL
GAS
HAZARDOUS
HEATING
LIGHTING
LIGHTNINGPROTECTION
MOBILENETWORK
MONITORINGSYSTEM
MUNICIPALSOLIDWASTE
OIL
OPERATIONAL
OPERATIONALTELEPHONYSYSTEM
OVERHEAD_CONTACTLINE_SYSTEM
POWERGENERATION
RAINWATER
REFRIGERATION
RETURN_CIRCUIT
SECURITY
SEWAGE
SIGNAL
STORMWATER
TELEPHONE
TV
VACUUM
VENT
VENTILATION
WASTEWATER
WATERSUPPLY
USERDEFINED
NOTDEFINED

Door

The Door feature type represents IfcDoor elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_overall_height	Height of the door.
ifc_overall_width	Width of the door.
ifc_predefined_type	Type of Door. The possible types are: BOOM_BARRIER DOOR GATE TRAPDOOR TURNSTILE USERDEFINED NOTDEFINED
ifc_operation_type	Defines the general layout and operation of the door type, including the partitioning of panels and the respective panel operations. DOUBLE_DOOR_DOUBLE_SWING DOUBLE_DOOR_FOLDING DOUBLE_DOOR_LIFTING_VERTICAL DOUBLE_DOOR_SINGLE_SWING DOUBLE_DOOR_SINGLE_SWING_OPPOSITE_LEFT DOUBLE_DOOR_SINGLE_SWING_OPPOSITE_RIGHT DOUBLE_DOOR_SLIDING DOUBLE_SWING_LEFT DOUBLE_SWING_RIGHT FOLDING_TO_LEFT FOLDING_TO_RIGHT LIFTING_HORIZONTAL LIFTING_VERTICAL_LEFT LIFTING_VERTICAL_RIGHT REVOLVING REVOLVING_VERTICAL ROLLINGUP SINGLE_SWING_LEFT SINGLE_SWING_RIGHT SLIDING_TO_LEFT SLIDING_TO_RIGHT SWING_FIXED_LEFT SWING_FIXED_RIGHT USERDEFINED NOTDEFINED
ifc_user_defined_operation_type	Specifies the designator for a user-defined operation type.

DuctFitting

The DuctFitting feature type represents IfcDuctFitting elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of DuctFitting. The possible types are: BEND CONNECTOR ENTRY EXIT JUNCTION OBSTRUCTION TRANSITION USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of DuctFitting. The possible types are:

BEND
CONNECTOR
ENTRY
EXIT
JUNCTION
OBSTRUCTION
TRANSITION
USERDEFINED
NOTDEFINED

DuctSegment

The DuctSegment feature type represents IfcDuctSegment elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of DuctSegment. The possible types are: FLEXIBLESEGMENT RIGIDSEGMENT USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of DuctSegment. The possible types are:

FLEXIBLESEGMENT
RIGIDSEGMENT
USERDEFINED
NOTDEFINED

DuctSilencer

The DuctSilencer feature type represents IfcDuctSilencer elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of DuctSilencer. The possible types are: FLATOVAL RECTANGULAR ROUND USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of DuctSilencer. The possible types are:

FLATOVAL
RECTANGULAR
ROUND
USERDEFINED
NOTDEFINED

ElectricAppliance

The ElectricAppliance feature type represents IfcElectricAppliance elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of ElectricAppliance. The possible types are: DISHWASHER ELECTRICCOOKER FREESTANDINGELECTRICHEATER FREESTANDINGFAN FREESTANDINGWATERCOOLER FREESTANDINGWATERHEATER FREEZER FRIDGE_FREEZER HANDDRYER KITCHENMACHINE MICROWAVE PHOTOCOPIER REFRIGERATOR TUMBLEDRYER VENDINGMACHINE WASHINGMACHINE USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of ElectricAppliance. The possible types are:

DISHWASHER
ELECTRICCOOKER
FREESTANDINGELECTRICHEATER
FREESTANDINGFAN
FREESTANDINGWATERCOOLER
FREESTANDINGWATERHEATER
FREEZER
FRIDGE_FREEZER
HANDDRYER
KITCHENMACHINE
MICROWAVE
PHOTOCOPIER
REFRIGERATOR
TUMBLEDRYER
VENDINGMACHINE
WASHINGMACHINE
USERDEFINED
NOTDEFINED

ElectricDistributionBoard

Note This element type is deprecated in IFC 4x3, but supported in IFC 4.

The ElectricDistributionBoard feature type represents IfcElectricDistributionBoard elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of ElectricDistributionBoard. The possible types are: CONSUMERUNIT DISTRIBUTIONBOARD MOTORCONTROLCENTRE SWITCHBOARD USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of ElectricDistributionBoard. The possible types are:

CONSUMERUNIT
DISTRIBUTIONBOARD
MOTORCONTROLCENTRE
SWITCHBOARD
USERDEFINED
NOTDEFINED

ElectricFlowTreatmentDevice

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The ElectricFlowTreatmentDevice feature type represents IfcElectricFlowTreatmentDevice elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of ElectricFlowTreatmentDevice. The possible types are: ELECTRONICFILTER USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of ElectricFlowTreatmentDevice. The possible types are:

ELECTRONICFILTER
USERDEFINED
NOTDEFINED

ElectricTimeControl

The ElectricTimeControl feature type represents IfcElectricTimeControl elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of ElectricTimeControl. The possible types are: RELAY TIMECLOCK TIMEDELAY USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of ElectricTimeControl. The possible types are:

RELAY
TIMECLOCK
TIMEDELAY
USERDEFINED
NOTDEFINED

FacilityPartCommon

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The FacilityPartCommon feature type represents FacilityPartCommon elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of FacilityPartCommon. The possible types are: ABOVEGROUND BELOWGROUND JUNCTION LEVELCROSSING SEGMENT SUBSTRUCTURE SUPERSTRUCTURE TERMINAL USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of FacilityPartCommon. The possible types are:

ABOVEGROUND
BELOWGROUND
JUNCTION
LEVELCROSSING
SEGMENT
SUBSTRUCTURE
SUPERSTRUCTURE
TERMINAL
USERDEFINED
NOTDEFINED

Fan

The Fan feature type represents IfcFan elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Fan. The possible types are: CENTRIFUGALAIRFOIL CENTRIFUGALBACKWARDINCLINEDCURVED CENTRIFUGALFORWARDCURVED CENTRIFUGALRADIAL PROPELLORAXIAL TUBEAXIAL VANEAXIAL USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Fan. The possible types are:

CENTRIFUGALAIRFOIL
CENTRIFUGALBACKWARDINCLINEDCURVED
CENTRIFUGALFORWARDCURVED
CENTRIFUGALRADIAL
PROPELLORAXIAL
TUBEAXIAL
VANEAXIAL
USERDEFINED
NOTDEFINED

Filter

The Filter feature type represents IfcFilter elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Filter. The possible types are: AIRPARTICLEFILTER COMPRESSEDAIRFILTER ODORFILTER OILFILTER STRAINER WATERFILTER USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Filter. The possible types are:

AIRPARTICLEFILTER
COMPRESSEDAIRFILTER
ODORFILTER
OILFILTER
STRAINER
WATERFILTER
USERDEFINED
NOTDEFINED

FireSuppressionTerminal

The FireSuppressionTerminal feature type represents IfcFireSuppressionTerminal elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of FireSuppressionTerminal. The possible types are: BREECHINGINLET FIREHYDRANT FIREMONITOR HOSEREEL SPRINKLER USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of FireSuppressionTerminal. The possible types are:

BREECHINGINLET
FIREHYDRANT
FIREMONITOR
HOSEREEL
SPRINKLER
USERDEFINED
NOTDEFINED

FlowMeter

The FlowMeter feature type represents IfcFlowMeter elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of FlowMeter. The possible types are: ENERGYMETER GASMETER OILMETER WATERMETER USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of FlowMeter. The possible types are:

ENERGYMETER
GASMETER
OILMETER
WATERMETER
USERDEFINED
NOTDEFINED

Footing

The Footing feature type represents IfcFooting elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_predefined_type	Type of Footing. The possible types are: CAISSON_FOUNDATION FOOTING_BEAM PAD_FOOTING PILE_CAP STRIP_FOOTING USERDEFINED NOTDEFINED

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Footing. The possible types are:

CAISSON_FOUNDATION
FOOTING_BEAM
PAD_FOOTING
PILE_CAP
STRIP_FOOTING
USERDEFINED
NOTDEFINED

GeographicElement

The GeographicElement feature type represents IfcGeographicElement elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of GeographicElement. The possible types are:

TERRAIN
SOIL_BORING_POINT (IFC 4x3 only)
VEGETATION (IFC 4x3 only)
USERDEFINED
NOTDEFINED

Interceptor

The Interceptor feature type represents IfcInterceptor elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Interceptor. The possible types are:

CYCLONIC
GREASE
OIL
PETROL
USERDEFINED
NOTDEFINED

JunctionBox

The JunctionBox feature type represents IfcJunctionBox elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of JunctionBox. The possible types are:

DATA
POWER
USERDEFINED
NOTDEFINED

Kerb

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Kerb feature type represents IfcKerb elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Kerb. The possible types are:

USERDEFINED
NOTDEFINED

Lamp

The Lamp feature type represents IfcLamp elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Lamp. The possible types are:

COMPACTFLUORESCENT
FLUORESCENT
HALOGEN
HIGHPRESSUREMERCURY
HIGHPRESSURESODIUM
LED
METALHALIDE
OLED
TUNGSTENFILAMENT
USERDEFINED
NOTDEFINED

LightFixture

The LightFixture feature type represents IfcLightFixture elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of LightFixture. The possible types are:

DIRECTIONSOURCE
POINTSOURCE
SECURITYLIGHTING
USERDEFINED
NOTDEFINED

LiquidTerminal

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The LiquidTerminal feature type represents IfcLiquidTerminal elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of LiquidTerminal. The possible types are:

HOSEREEL
LOADINGARM
USERDEFINED
NOTDEFINED

MarineFacility

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The MarineFacility feature type represents MarineFacility elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of MarineFacility. The possible types are:

BARRIERBEACH
BREAKWATER
CANAL
DRYDOCK
FLOATINGDOCK
HYDROLIFT
JETTY
LAUNCHRECOVERY
MARINEDEFENCE
NAVIGATIONALCHANNEL
PORT
QUAY
REVETMENT
SHIPLIFT
SHIPLOCK
SHIPYARD
SLIPWAY
WATERWAY
WATERWAYSHIPLIFT
USERDEFINED
NOTDEFINED

MarinePart

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The MarinePart feature type represents MarinePart elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of MarinePart. The possible types are:

ABOVEWATERLINE
ANCHORAGE
APPROACHCHANNEL
BELOWWATERLINE
BERTHINGSTRUCTURE
CHAMBER
CILL_LEVEL
COPELEVEL
CORE
CREST
GATEHEAD
GUDINGSTRUCTURE
HIGHWATERLINE
LANDFIELD
LEEWARDSIDE
LOWWATERLINE
MANUFACTURING
NAVIGATIONALAREA
PROTECTION
SHIPTRANSFER
STORAGEAREA
VEHICLESERVICING
WATERFIELD
WEATHERSIDE
USERDEFINED
NOTDEFINED

MedicalDevice

The MedicalDevice feature type represents IfcMedicalDevice elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of MedicalDevice. The possible types are:

AIRSTATION
FEEDAIRUNIT
OXYGENGENERATOR
OXYGENPLANT
VACUUMSTATION
USERDEFINED
NOTDEFINED

Member

The Member feature type represents IfcMember elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Member. The possible types are:

ARCH_SEGMENT
BRACE
CHORD
COLLAR
MEMBER
MULLION
PLATE
POST
PURLIN
RAFTER
STAY_CABLE
STIFFENING_RIB
STRINGER
STRUCTURALCABLE
STRUT
STUD
SUSPENDER
SUSPENSION_CABLE
TIEBAR
USERDEFINED
NOTDEFINED

MobileTelecommunicationsAppliance

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The MobileTelecommunicationsAppliance feature type represents IfcMobileTelecommunicationsAppliance elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of MobileTelecommunicationsAppliance. The possible types are:

ACCESSPOINT
BASEBANDUNIT
BASETRANSCEIVERSTATION
E_UTRAN_NODE_B
GATEWAY_GPRS_SUPPORT_NODE
MASTERUNIT
MOBILESWITCHINGCENTER
MSCSERVER
PACKETCONTROLUNIT
REMOTERADIOUNIT
REMOTEUNIT
SERVICE_GPRS_SUPPORT_NODE
SUBSCRIBERSERVER
USERDEFINED
NOTDEFINED

OpeningElement

The OpeningElement feature type represents IfcOpeningElement elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of OpeningElement. The possible types are:

OPENING
RECESS
USERDEFINED
NOTDEFINED

The OpeningElement feature type is always written to “Body” Geometric Representation Type.

Outlet

The Outlet feature type represents IfcOutlet elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Outlet. The possible types are:

AUDIOVISUALOUTLET
COMMUNICATIONSOUTLET
DATAOUTLET
POWEROUTLET
TELEPHONEOUTLET
USERDEFINED
NOTDEFINED

PipeFitting

The PipeFitting feature type represents IfcPipeFitting elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of PipeFitting. The possible types are:

BEND
CONNECTOR
ENTRY
EXIT
JUNCTION
OBSTRUCTION
TRANSITION
USERDEFINED
NOTDEFINED

PipeSegment

The PipeSegment feature type represents IfcPipeSegment elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of PipeSegment. The possible types are:

CULVERT
FLEXIBLESEGMENT
GUTTER
RIGIDSEGMENT
SPOOL
USERDEFINED
NOTDEFINED

Plate

The Plate feature type represents IfcPlate elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Plate. The possible types are:

BASE_PLATE
COVER_PLATE
CURTAIN_PANEL
FLANGE_PLATE
GUSSET_PLATE
SHEET
SPLICE_PLATE
STIFFENER_PLATE
WEB_PLATE
USERDEFINED
NOTDEFINED

ProtectiveDevice

The ProtectiveDevice feature type represents IfcProtectiveDevice elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of ProtectiveDevice. The possible types are:

ANTI_ARCING_DEVICE
CIRCUITBREAKER
EARTHINGSWITCH
EARTHLEAKAGECIRCUITBREAKER
FUSEDISCONNECTOR
RESIDUALCURRENTCIRCUITBREAKER
RESIDUALCURRENTSWITCH
SPARKGAP
VARISTOR
VOLTAGELIMITER
USERDEFINED
NOTDEFINED

Pump

The Pump feature type represents IfcPump elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Pump. The possible types are:

CIRCULATOR
ENDSUCTION
SPLITCASE
SUBMERSIBLEPUMP
SUMPPUMP
VERTICALINLINE
VERTICALTURBINE
USERDEFINED
NOTDEFINED

Rail

The Rail feature type represents IfcRail elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Rail. The possible types are:

BLADE
CHECKRAIL
GUARDRAIL
RACKRAIL
RAIL
STOCKRAIL
USERDEFINED
NOTDEFINED

Railing

The Railing feature type represents IfcRailing elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Railing. The possible types are:

BALUSTRADE
FENCE
GUARDRAIL
HANDRAIL
USERDEFINED
NOTDEFINED

Railway

The Railway feature type represents IfcRailway elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Railway. The possible types are:

USERDEFINED
NOTDEFINED

RailwayPart

The RailwayPart feature type represents IfcRailwayPart elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of RailwayPart. The possible types are:

ABOVETRACK
DILATIONTRACK
LINESIDE
LINESIDEPART
PLAINTRACK
SUBSTRUCTURE
TRACK
TRACKPART
TURNOUTTRACK
USERDEFINED
NOTDEFINED

Ramp

The Ramp feature type represents IfcRamp elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Ramp. The possible types are:

HALF_TURN_RAMP
QUARTER_TURN_RAMP
SPIRAL_RAMP
STRAIGHT_RUN_RAMP
TWO_QUARTER_TURN_RAMP
TWO_STRAIGHT_RUN_RAMP
USERDEFINED
NOTDEFINED

Ramp Flight

The Ramp Flight feature type represents IfcRampFlight elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Ramp Flight. The possible types are:

SPIRAL
STRAIGHT
USERDEFINED
NOTDEFINED

Road

The Road feature type represents IfcRoad elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Road. The possible types are:

USERDEFINED
NOTDEFINED

RoadPart

The RoadPart feature type represents IfcRoadPart elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of RoadPart. The possible types are:

BICYCLECROSSING
BUS_STOP
CARRIAGEWAY
CENTRALISLAND
CENTRALRESERVE
HARDSHOULDER
INTERSECTION
LAYBY
PARKINGBAY
PASSINGBAY
PEDESTRIAN_CROSSING
RAILWAYCROSSING
REFUGEISLAND
ROADSEGMENT
ROADSIDE
ROADSIDEPART
ROADWAYPLATEAU
ROUNDABOUT
SHOULDER
SIDEWALK
SOFTSHOULDER
TOLLPLAZA
TRAFFICISLAND
TRAFFICLANE
USERDEFINED
NOTDEFINED

Roof

The Roof feature type represents IfcRoof elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Roof. The possible types are:

BARREL_ROOF
BUTTERFLY_ROOF
DOME_ROOF
FLAT_ROOF
FREEFORM
GABLE_ROOF
GAMBREL_ROOF
HIPPED_GABLE_ROOF
HIP_ROOF
MANSARD_ROOF
PAVILION_ROOF
RAINBOW_ROOF
SHED_ROOF
USERDEFINED
NOTDEFINED

SanitaryTerminal

The SanitaryTerminal feature type represents IfcSanitaryTerminal elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of SanitaryTerminal. The possible types are:

BATH
BIDET
CISTERN
SANITARYFOUNTAIN
SHOWER
SINK
TOILETPAN
URINAL
WASHHANDBASIN
WCSEAT
USERDEFINED
NOTDEFINED

Signal

Note This element type is new to IFC 4x3 and not supported in IFC 4.

The Signal feature type represents IfcSignal elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Signal. The possible types are:

AUDIO
MIXED
VISUAL
USERDEFINED
NOTDEFINED

Site

The Site feature type represents IfcSite elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_ref_latitude	Specifies the world latitude at the reference point.
ifc_ref_longitude	Specifies the world longitude at the reference point.
ifc_ref_elevation	Represents the datum elevation relative to sea level.
ifc_land_title_number	Specifies Land title number. Note This property has been deprecated in IFC 4x3. When writing to IFC 4x3, this attribute will be written as the Pset_LandRegistration.
SiteAddress	The value of the building’s SiteAddress property. This attribute will be read as an address, with several SiteAddress.* sub-attributes. Note This property has been deprecated in IFC 4x3. When writing to IFC 4x3, this attribute will be written as the Pset_Address.

Slab

The Slab feature type represents IfcSlab elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Slab. The possible types are:

APPROACH_SLAB
BASESLAB
FLOOR
LANDING
PAVING
ROOF
SIDEWALK
TRACKSLAB
WEARING
USERDEFINED
NOTDEFINED

Space

The Space feature type represents IfcSpace elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Space. The possible types are:

BERTH
EXTERNAL
GFA
INTERNAL
PARKING
SPACE
USERDEFINED
NOTDEFINED

ifc_elevation_with_flooring

Level of flooring of the space.

SpaceHeater

The SpaceHeater feature type represents IfcSpaceHeater elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of SpaceHeater. The possible types are:

CONVECTOR
RADIATOR
USERDEFINED
NOTDEFINED

StackTerminal

The StackTerminal feature type represents IfcStackTerminal elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of StackTerminal. The possible types are:

BIRDCAGE
COWL
RAINWATERHOPPER
USERDEFINED
NOTDEFINED

Stair

The Stair feature type represents IfcStair elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Stair. The possible types are:

CURVED_RUN_STAIR
DOUBLE_RETURN_STAIR
HALF_TURN_STAIR
HALF_WINDING_STAIR
LADDER
QUARTER_TURN_STAIR
QUARTER_WINDING_STAIR
SPIRAL_STAIR
STRAIGHT_RUN_STAIR
THREE_QUARTER_TURN_STAIR
THREE_QUARTER_WINDING_STAIR
TWO_CURVED_RUN_STAIR
TWO_QUARTER_TURN_STAIR
TWO_QUARTER_WINDING_STAIR
TWO_STRAIGHT_RUN_STAIR
USERDEFINED
NOTDEFINED

Stair Flight

The Stair Flight feature type represents IfcStairFlight elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_number_of_risers	Number of Risers. Note This property has been deprecated in IFC 4 and above. When writing, this attribute will be written as the Pset_StairFlightCommon.NumberOfRisers.
ifc_number_of_treads	Number of Treads. Note This property has been deprecated in IFC 4 and above. When writing, this attribute will be written as the Pset_StairFlightCommon.NumberOfTreads.
ifc_riser_height	Riser height. Note This property has been deprecated in IFC 4 and above. When writing, this attribute will be written as the Pset_StairFlightCommon.RiserHeight.
ifc_tread_length	Tread length. Note This property has been deprecated in IFC 4 and above. When writing, this attribute will be written as the Pset_StairFlightCommon.TreadLength.
ifc_predefined_type	Type of Stair Flight. The possible types are: CURVED FREEFORM SPIRAL STRAIGHT WINDER USERDEFINED NOTDEFINED

StructuralAnalysisModel

The StructuralAnalysisModel feature type represents IfcStructuralAnalysisModel elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of StructuralAnalysisModel. The possible types are:

IN_PLANE_LOADING_2D
LOADING_3D
OUT_PLANE_LOADING_2D
USERDEFINED
NOTDEFINED

SwitchingDevice

The SwitchingDevice feature type represents IfcSwitchingDevice elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of SwitchingDevice. The possible types are:

CONTACTOR
DIMMERSWITCH
EMERGENCYSTOP
KEYPAD
MOMENTARYSWITCH
RELAY
SELECTORSWITCH
STARTER
START_AND_STOP_EQUIPMENT
SWITCHDISCONNECTOR
TOGGLESWITCH
USERDEFINED
NOTDEFINED

Valve

The Valve feature type represents IfcValve elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of Valve. The possible types are:

AIRRELEASE
ANTIVACUUM
CHANGEOVER
CHECK
COMMISSIONING
DIVERTING
DOUBLECHECK
DOUBLEREGULATING
DRAWOFFCOCK
FAUCET
FLUSHING
GASCOCK
GASTAP
ISOLATING
MIXING
PRESSUREREDUCING
PRESSURERELIEF
REGULATING
SAFETYCUTOFF
STEAMTRAP
STOPCOCK
USERDEFINED
NOTDEFINED

WasteTerminal

The WasteTerminal feature type represents IfcWasteTerminal elements in the dataset. It has the following unique attributes:

Attribute/Trait Name

Contents

ifc_predefined_type

Type of WasteTerminal. The possible types are:

FLOORTRAP
FLOORWASTE
GULLYSUMP
GULLYTRAP
ROOFDRAIN
WASTEDISPOSALUNIT
WASTETRAP
USERDEFINED
NOTDEFINED

Window

The Window feature type represents IfcWindow elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_overall_height	Height of the window.
ifc_overall_width	Width of the window.
ifc_partitioning_type	Layout type of the window in terms of partitioning of panels. The possible types are: DOUBLE_PANEL_HORIZONTAL DOUBLE_PANEL_VERTICAL SINGLE_PANEL TRIPLE_PANEL_BOTTOM TRIPLE_PANEL_HORIZONTAL TRIPLE_PANEL_LEFT TRIPLE_PANEL_RIGHT TRIPLE_PANEL_TOP TRIPLE_PANEL_VERTICAL USERDEFINED NOTDEFINED
ifc_predefined_type	Type of Window. The possible types are: LIGHTDOME SKYLIGHT WINDOW USERDEFINED NOTDEFINED
ifc_related_opening_element_id	Global Id of the Opening related to the window.

Zone

The Zone feature type represents IfcZone elements in the dataset. It has the following unique attributes:

Attribute/Trait Name	Contents
ifc_longname	Long name of Zone.