IfcMaterialSelect

Semantic definitions at the type

Type definition

IfcMaterialSelect provides selection of either a material definition or a material usage definition that can be assigned to an element, a resource or another entity within this specification.

HISTORY New select in IFC1.0

IFC4 CHANGE The select now includes two new abstract entities IfcMaterialDefinition and IfcMaterialUsageDefinition with upward compatibility. The use of IfcMaterialList is deprecated from IFC4 onwards.

Enumeration definition

Constant	Description
IfcMaterialUsageDefinition
IfcMaterialDefinition
IfcMaterialList

Formal representations

XSD Specification

 <xs:group name="IfcMaterialSelect">

  <xs:choice>

   <xs:element ref="ifc:IfcMaterialDefinition"/>

   <xs:element ref="ifc:IfcMaterialList"/>

   <xs:element ref="ifc:IfcMaterialUsageDefinition"/>

  </xs:choice>

 </xs:group>

EXPRESS Specification


TYPE IfcMaterialSelect = SELECT (

 IfcMaterialUsageDefinition, 
 IfcMaterialDefinition, 
 IfcMaterialList);
END_TYPE;


 EXPRESS-G diagram

Item	SPF	XML	Change	Description
IFC2x3 to IFC4
IfcMaterialSelect
IfcMaterialUsageDefinition			ADDED
IfcMaterialDefinition			ADDED
IfcMaterial			DELETED
IfcMaterialLayerSetUsage			DELETED
IfcMaterialLayerSet			DELETED
IfcMaterialLayer			DELETED

	Material Select
	Sélection de matériau