Defined in File Ifc4x1.h
IfcCableSegment: public Ifc4x1::IfcFlowSegment¶
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 New entity in IFC2x4
Type Use Definition IfcCableSegment defines the occurrence of any cable segment; common information about cable segment types is handled by IfcCableSegmentType. The IfcCableSegmentType (if present) may establish the common type name, usage (predefined type), properties, materials, ports, composition, assignments, and representations. The IfcCableSegmentType is attached using the IfcRelDefinesByType objectified relationship and is accessible by the IsTypedBy inverse attribute. If the IfcCableSegmentType has ports or aggregated elements, such objects are reflected at the IfcCableSegment occurrence using the IfcRelDefinesByObject relationship.
Property Use Definition The property sets relating to this entity are defined by IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. Property sets may also be specified at the IfcCableSegmentType, defining the common property data for all occurrences of the same type. They are then accessible by the IsTypedBy inverse attribute pointing to IfcCableSegmentType.HasPropertySets. If both are given, then the properties directly defined at IfcCableSegment override the properties defined at IfcCableSegmentType. Refer to the documentation at the supertype IfcFlowSegment and ancestors for inherited property set definitions. The following property set definitions are applicable to this entity: (All Types)
Quantity Use Definition The quantities relating to this entity are defined by IfcElementQuantity and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. The following base quantities are defined and shall be exchanged with the IfcElementQuantity.Name = ‘BaseQuantities’. Other quantities, being subjected to local standard of measurement, may be defined with another string value assigned to Name. In this case a valid value for MethodOfMeasurement shall be provided.
Material Use Definition The material of the IfcCableSegment is defined by IfcMaterialProfileSetUsage or as a fallback by IfcMaterial, and attached by the RelatingMaterial attribute on the IfcRelAssociatesMaterial relationship. It is accessible by the HasAssociations inverse attribute. Material information can also be given at the IfcCableSegmentType, defining the common attribute data for all occurrences of the same type. The following keywords for IfcMaterialProfileSet.MaterialProfiles[n].Name shall be used:
Conductor: Material from which the conductors are constructed, such as Aluminium or Copper. Insulation: The material from which the insulation is constructed such as PVC, PEX, or EPR. Screen: The material from which the screen that covers the sheath is constructed (mantel) such as Aluminium, Copper, Steel, or Lead. Sheath: The outer sheathing of the cable which may be color-coded.
Composition Use Definition The IfcCableSegment may be aggregated into components using IfcRelAggregates where RelatingObject refers to the enclosing IfcCableSegment and RelatedObjects contains one or more components. Aggregation use is defined for the following predefined types:
May contain IfcCableSegment components having PredefinedType=CORESEGMENT. Cable segments may be aggregated into cable cores.
May contain IfcCableSegment components having PredefinedType=CONDUCTORSEGMENT. Cable cores may be aggregated into cable conductors.
Connection Use Definition The IfcCableSegment may be connected to other objects as follows using the indicated relationship:
Port Use Definition The distribution ports relating to the IfcCableSegment are defined by IfcDistributionPort and attached by the IfcRelConnectsPortToElement relationship. If the cable segment occurrence is defined by IfcCableSegmentType, then the port occurrences must reflect those defined at the IfcCableSegmentType using the IfcRelDefinesByObject relationship. Ports are specific to the IfcCableSegment PredefinedType as follows indicated by the IfcDistributionPort Name, PredefinedType, and FlowDirection:
Input (NOTDEFINED, SINK): Input end of the cable. Output (NOTDEFINED, SOURCE): Output end of the cable.
Input (NOTDEFINED, SINK): Input end of the conductor. Output (NOTDEFINED, SOURCE): Output end of the cable.
Whether the optional attribute PredefinedType is defined for this IfcCableSegment.
Identifies the predefined types of cable segment from which the type required may be set.
IfcCableSegment(std::string v1_GlobalId, ::Ifc4x1::IfcOwnerHistory *v2_OwnerHistory, boost::optional<std::string> v3_Name, boost::optional<std::string> v4_Description, boost::optional<std::string> v5_ObjectType, ::Ifc4x1::IfcObjectPlacement *v6_ObjectPlacement, ::Ifc4x1::IfcProductRepresentation *v7_Representation, boost::optional<std::string> v8_Tag, boost::optional<::Ifc4x1::IfcCableSegmentTypeEnum::Value> v9_PredefinedType)¶