Defined in File Ifc4x2.h
IfcPipeSegment: public Ifc4x2::IfcFlowSegment¶
A pipe segment is used to typically join two sections of a piping network.
HISTORY New entity in IFC2x4
Type Use Definition IfcPipeSegment defines the occurrence of any pipe segment; common information about pipe segment types is handled by IfcPipeSegmentType. The IfcPipeSegmentType (if present) may establish the common type name, usage (predefined type), properties, materials, ports, composition, assignments, and representations. The IfcPipeSegmentType is attached using the IfcRelDefinesByType objectified relationship and is accessible by the IsTypedBy inverse attribute. If the IfcPipeSegmentType has ports or aggregated elements, such objects are reflected at the IfcPipeSegment 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 IfcPipeSegmentType, defining the common property data for all occurrences of the same type. They are then accessible by the IsTypedBy inverse attribute pointing to IfcPipeSegmentType.HasPropertySets. If both are given, then the properties directly defined at IfcPipeSegment override the properties defined at IfcPipeSegmentType. 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)
Pset_PipeConnectionFlanged (PSET_OCCURRENCEDRIVEN) Pset_PipeSegmentOccurrence (PSET_OCCURRENCEDRIVEN) Pset_PipeSegmentPHistory (PSET_PERFORMANCEDRIVEN) Pset_PipeSegmentTypeCommon (PSET_TYPEDRIVENOVERRIDE)
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 IfcPipeSegment 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 IfcPipeSegmentType, defining the common attribute data for all occurrences of the same type. The following keywords for IfcMaterialProfileSet.MaterialProfiles[n].Name shall be used:
Body: Material from which the duct fitting is constructed. Coating: The outer coating, if applicable. Insulation: The insulating wrapping, if applicable. Lining: The inner lining, if applicable.
Port Use Definition The distribution ports relating to the IfcPipeSegment are defined by IfcDistributionPort and attached by the IfcRelConnectsPortToElement relationship. If the pipe segment occurrence is defined by IfcPipeSegmentType, then the port occurrences must reflect those defined at the IfcPipeSegmentType using the IfcRelDefinesByObject relationship. Ports are specific to the IfcPipeSegment PredefinedType as follows indicated by the IfcDistributionPort Name, PredefinedType, and FlowDirection:
Inlet (NOTDEFINED, SINK): The flow inlet. Outlet (NOTDEFINED, SOURCE): The flow outlet.
Figure 228 illustrates pipe segment port use. Figure 228 — Pipe segment port use
Whether the optional attribute PredefinedType is defined for this IfcPipeSegment.
IfcPipeSegment(std::string v1_GlobalId, ::Ifc4x2::IfcOwnerHistory *v2_OwnerHistory, boost::optional<std::string> v3_Name, boost::optional<std::string> v4_Description, boost::optional<std::string> v5_ObjectType, ::Ifc4x2::IfcObjectPlacement *v6_ObjectPlacement, ::Ifc4x2::IfcProductRepresentation *v7_Representation, boost::optional<std::string> v8_Tag, boost::optional<::Ifc4x2::IfcPipeSegmentTypeEnum::Value> v9_PredefinedType)¶