Defined in File Ifc4x3_rc1.h
IfcColumnType: public Ifc4x3_rc1::IfcBuiltElementType¶
Definition from IAI: The element type IfcColumnType defines commonly shared information for occurrences of columns. 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 column specification, or column style (i.e. the specific product information that is common to all occurrences of that column type). Column types may be exchanged without being already assigned to occurrences. Occurrences of the IfcColumnType within building models are represented by instances of IfcColumnStandardCase if the IfcColumnType has a single associated IfcMaterialProfileSet; otherwise they are represented by instances of IfcColumn. Occurrences of the IfcColumnType 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 IfcColumnType 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 IfcColumnType, if there is at least one occurrences of IfcColumnStandardCase for this type. Property Set Use Definition: The shared property sets relating to the IfcColumnType are defined by the IfcPropertySet and are attached by the HasPropertySets attribute. The following property set definitions specific to the IfcColumnType are part of this IFC release: NOTE There is no differentiation between properties within the property set that are only assignable to IfcColumnType and those that are only assignable to IfcColumn. If the same property is assigned to the IfcColumnType and the IfcColumn being an occurrence of the IfcColumnType, then the occurrence property overrides the type property.
Pset_ColumnCommon: common property set for all column 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 column occurrence, if used. It is only applicable if the IfcColumnType has only occurrences of type IfcColumnStandardCase (see definition of IfcColumnStandardCase 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 IfcColumnType may define the shared geometric representation for all column 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 IfcColumnType has only occurrences of type IfcColumn (See geometric use definition of IfcColumn for further information). NOTE If the IfcColumnType 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 IfcColumn and IfcColumnStandardCase
Identifies the predefined types of a column element from which the type required may be set.
IfcColumnType(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::IfcColumnTypeEnum::Value v10_PredefinedType)¶