Defined in File Ifc4x3_rc1.h
IfcMemberType: public Ifc4x3_rc1::IfcBuiltElementType¶
Definition from IAI: The element type IfcMemberType defines commonly shared information for occurrences of members. Members are predominately linear building elements, often forming part of a structural system. The orientation of the member (being horizontal, vertical or sloped) is not relevant to its definition (in contrary to beam and column). The set of shared information may include:
common properties within shared property sets common material information common profile definitions common shape representations
It is used to define a member specification, or member style (i.e. the specific product information that is common to all occurrences of that member type). Member types may be exchanged without being already assigned to occurrences. Occurrences of the IfcMemberType within building models are represented by instances of IfcMemberStandardCase if the IfcMemberType has a single associated IfcMaterialProfileSet; otherwise they are represented by instances of IfcMember. Occurrences of the IfcMemberType within structural analysis models are represented by instances of IfcStructuralCurveMember, or its applicable subtypes. HISTORY New entity in Release IFC2x2 Addendum 1. Material Use Definition The material of the IfcMemberType is defined by the IfcMaterialProfileSet or as fall back by IfcMaterial and attached by the IfcRelAssociatesMaterial.RelatingMaterial. It is accessible by the inverse HasAssociations relationship. Note: It is illegal to assign an IfcMaterial to an IfcMemberType, if there is at least one occurrences of IfcMemberStandardCase for this type. Property Set Use Definition: The shared property sets relating to the IfcMemberType are defined by the IfcPropertySet and are attached by the HasPropertySets attribute. The following property set definitions specific to the IfcMemberType are part of this IFC release: NOTE There is no differentiation between properties within the property set that are only assignable to IfcMemberType and those that are only assignable to IfcMember. If the same property is assigned to the IfcMemberType and the IfcMember being an occurrence of the IfcMemberType, then the occurrence property overrides the type property.
Pset_MemberCommon: common property set for all member types.
Profile Use Definition: The shared profile definition is defined by assigning an IfcMaterialProfileSet (see material use definition above). The IfcMaterialProfile refers to the subtype of IfcProfileDef that is the common profile for all member occurrence, if used. It is only applicable if the IfcMemberType has only occurrences of type IfcMemberStandardCase (see definition of IfcMemberStandardCase for further information). NOTE The attribute ProfileName of the IfcProfileDef subtype, referenced in IfcMaterialProfile should contain a standardized profile name according to local standards. However, an additional geometric representation of the profile is necessary (e.g. as IfcExtrudedAreaSolid). An importing application is allowed to check for the existence of the profile name: in case of identifying it as a standardized name, the corresponding profile geometry and possibly other cross sectional properties can be read from a library. Otherwise the geometric representation and possible non geometric IfcProfileProperties have to be used. Geometry Use Definition: The IfcMemberType may define the shared geometric representation for all member occurrences. The RepresentationMaps attribute refers to a list of IfcRepresentationMap’s, that allow for multiple geometric representations (e.g. with IfcShaperepresentation’s having an RepresentationIdentifier ‘Box’, ‘Axis’, or ‘Body’). It is only applicable if the IfcMemberType has only occurrences of type IfcMember (See geometric use definition of IfcMember for further information). NOTE If the IfcMemberType has an associated IfcMaterialProfileSet, then no shared geometric representation shall be provided. NOTE The product shape representations are defined as RepresentationMaps (attribute of the supertype IfcTypeProduct), which get assigned by an element occurrence instance through the IfcShapeRepresentation.Item[n] being an IfcMappedItem. See IfcTypeProduct for further information. NOTE The values of attributes RepresentationIdentifier and RepresentationType of IfcShapeRepresentation are restricted in the same way as those for IfcMember and IfcMemberStandardCase
Identifies the predefined types of a linear structural member element from which the type required may be set.
IfcMemberType(std::string v1_GlobalId, ::Ifc4x3_rc1::IfcOwnerHistory *v2_OwnerHistory, boost::optional<std::string> v3_Name, boost::optional<std::string> v4_Description, boost::optional<std::string> v5_ApplicableOccurrence, boost::optional<IfcTemplatedEntityList<::Ifc4x3_rc1::IfcPropertySetDefinition>::ptr> v6_HasPropertySets, boost::optional<IfcTemplatedEntityList<::Ifc4x3_rc1::IfcRepresentationMap>::ptr> v7_RepresentationMaps, boost::optional<std::string> v8_Tag, boost::optional<std::string> v9_ElementType, ::Ifc4x3_rc1::IfcMemberTypeEnum::Value v10_PredefinedType)¶