Defined in File Ifc4x3_rc1.h
IfcBeamType: public Ifc4x3_rc1::IfcBuiltElementType¶
Definition from IAI: The element type IfcBeamType defines commonly shared information for occurrences of beams. 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 beam specification, or beam style (i.e. the specific product information that is common to all occurrences of that beam type). Beam types may be exchanged without being already assigned to occurrences. Occurrences of the IfcBeamType within building models are represented by instances of IfcBeamStandardCase if the IfcBeamType has a single associated IfcMaterialProfileSet; otherwise they are represented by instances of IfcBeam. Occurrences of the IfcBeamType within structural analysis models are represented by instances of IfcStructuralCurveMember, or its applicable subtypes. HISTORY New entity in Release IFC2x Edition 2. Material Use Definition The material of the IfcBeamType 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 IfcBeamType, if there is at least one occurrences. of IfcBeamStandardCase for this type. Property Set Use Definition: The shared property sets relating to the IfcBeamType are defined by the IfcPropertySet and are attached by the HasPropertySets attribute. The following property set definitions specific to the IfcBeamType are part of this IFC release: NOTE There is no differentiation between properties within the property set that are only assignable to IfcBeamType and those that are only assignable to IfcBeam. If the same property is assigned to the IfcBeamType and the IfcBeam being an occurrence of the IfcBeamType, then the occurrence property overrides the type property.
Pset_BeamCommon: common property set for all beam 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 beam occurrence, if used. It is only applicable if the IfcBeamType has only occurrences of type IfcBeamStandardCase (see definition of IfcBeamStandardCase 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 IfcBeamType may define the shared geometric representation for all beam 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 IfcBeamType has only occurrences of type IfcBeam (See geometric use definition of IfcBeam for further information). NOTE If the IfcBeamType 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 IfcBeam and IfcBeamStandardCase
Identifies the predefined types of a beam element from which the type required may be set.
IfcBeamType(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::IfcBeamTypeEnum::Value v10_PredefinedType)¶