4.2.6.1 Material Constituent Set
A material constituent set may have its constituents associated to arbitrary geometry using IfcShapeAspect IfcShapeAspect
EXAMPLE A window's geometric representation may be split into two items: the frame, and the glazing. Each representation item would be given a name that correlates with the name of the material constituent.
The following diagram shows the generic classes and relationships used when applying this concept.
In addition, concepts may have particular importance to common or standardised industry practices and scenarios. For these specific usage scenarios, the tables below shows a recommended list of general usage patterns that users may adopt.
G
<a href="IfcProduct.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcProduct.htm">IfcProduct</a>
IfcProduct GlobalId
[1:1]
OwnerHistory
[0:1]
Name
[0:1]
Description
[0:1]
HasAssignments
[0:?]
Nests
[0:1]
IsNestedBy
[0:?]
HasContext
[0:1]
IsDecomposedBy
[0:?]
Decomposes
[0:1]
HasAssociations
[0:?]
ObjectType
[0:1]
IsDeclaredBy
[0:1]
Declares
[0:?]
IsTypedBy
[0:1]
IsDefinedBy
[0:?]
ObjectPlacement
[0:1]
Representation
[0:1]
ReferencedBy
[0:?]
PositionedRelativeTo
[0:?]
ReferencedInStructures
[0:?]
<a href="IfcRelAssociatesMaterial.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcRelAssociatesMaterial.htm">IfcRelAssociatesMaterial</a>
IfcRelAssociatesMaterial GlobalId
[1:1]
OwnerHistory
[0:1]
Name
[0:1]
Description
[0:1]
RelatedObjects
[1:?]
RelatingMaterial
[1:1]
<a href="IfcProduct.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcProduct.htm">IfcProduct</a>:HasAssociations1-><a href="IfcRelAssociatesMaterial.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcRelAssociatesMaterial.htm">IfcRelAssociatesMaterial</a>:RelatedObjects0
<a href="IfcProductDefinitionShape.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcProductDefinitionShape.htm">IfcProductDefinitionShape</a>
IfcProductDefinitionShape Name
[0:1]
Description
[0:1]
Representations
[1:?]
ShapeOfProduct
[1:?]
HasShapeAspects
[0:?]
<a href="IfcProduct.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcProduct.htm">IfcProduct</a>:Representation1-><a href="IfcProductDefinitionShape.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcProductDefinitionShape.htm">IfcProductDefinitionShape</a>:ShapeOfProduct0
<a href="IfcMaterialConstituentSet.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterialConstituentSet.htm">IfcMaterialConstituentSet</a>
IfcMaterialConstituentSet AssociatedTo
[0:?]
HasExternalReferences
[0:?]
HasProperties
[0:?]
Name
[0:1]
Description
[0:1]
MaterialConstituents
[1:?]
<a href="IfcRelAssociatesMaterial.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcRelAssociatesMaterial.htm">IfcRelAssociatesMaterial</a>:RelatingMaterial1-><a href="IfcMaterialConstituentSet.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterialConstituentSet.htm">IfcMaterialConstituentSet</a>:AssociatedTo0
<a href="IfcShapeRepresentation.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcShapeRepresentation.htm">IfcShapeRepresentation</a>
IfcShapeRepresentation ContextOfItems
[1:1]
RepresentationIdentifier
[0:1]
RepresentationType
[0:1]
Items
[1:?]
RepresentationMap
[0:1]
LayerAssignments
[0:?]
OfProductRepresentation
[0:?]
OfShapeAspect
[0:1]
<a href="IfcProductDefinitionShape.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcProductDefinitionShape.htm">IfcProductDefinitionShape</a>:Representations1-><a href="IfcShapeRepresentation.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcShapeRepresentation.htm">IfcShapeRepresentation</a>:OfProductRepresentation0
<a href="IfcRepresentationItem.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcRepresentationItem.htm">IfcRepresentationItem</a>
IfcRepresentationItem LayerAssignment
[0:1]
StyledByItem
[0:1]
<a href="IfcShapeRepresentation.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcShapeRepresentation.htm">IfcShapeRepresentation</a>:Items1-><a href="IfcRepresentationItem.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcRepresentationItem.htm">IfcRepresentationItem</a>:IfcRepresentationItem0
IfcShapeRepresentation_0
IfcShapeRepresentation ContextOfItems
[1:1]
RepresentationIdentifier
[0:1]
RepresentationType
[0:1]
Items
[1:?]
RepresentationMap
[0:1]
LayerAssignments
[0:?]
OfProductRepresentation
[0:?]
OfShapeAspect
[0:1]
IfcShapeRepresentation_0:Items1-><a href="IfcRepresentationItem.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcRepresentationItem.htm">IfcRepresentationItem</a>:IfcRepresentationItem0
<a href="IfcShapeAspect.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcShapeAspect.htm">IfcShapeAspect</a>
IfcShapeAspect ShapeRepresentations
[1:?]
ShapeAspectName
Name
[0:1]
Description
[0:1]
ProductDefinitional
[1:1]
PartOfProductDefinitionShape
[0:1]
HasExternalReferences
[0:?]
<a href="IfcShapeAspect.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcShapeAspect.htm">IfcShapeAspect</a>:PartOfProductDefinitionShape1-><a href="IfcProductDefinitionShape.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcProductDefinitionShape.htm">IfcProductDefinitionShape</a>:HasShapeAspects0
<a href="IfcShapeAspect.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcShapeAspect.htm">IfcShapeAspect</a>:ShapeRepresentations1->IfcShapeRepresentation_0:OfShapeAspect0
<a href="IfcLabel.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcLabel.htm">IfcLabel</a>
IfcLabel
<a href="IfcShapeAspect.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcShapeAspect.htm">IfcShapeAspect</a>:Name1-><a href="IfcLabel.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcLabel.htm">IfcLabel</a>:IfcLabel0
<a href="IfcMaterialConstituent.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterialConstituent.htm">IfcMaterialConstituent</a>
IfcMaterialConstituent AssociatedTo
[0:?]
HasExternalReferences
[0:?]
HasProperties
[0:?]
ConstituentName
Name
[0:1]
Description
[0:1]
Material
[1:1]
Fraction
[0:1]
Category
[0:1]
ToMaterialConstituentSet
[1:1]
<a href="IfcMaterialConstituentSet.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterialConstituentSet.htm">IfcMaterialConstituentSet</a>:MaterialConstituents1-><a href="IfcMaterialConstituent.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterialConstituent.htm">IfcMaterialConstituent</a>:ToMaterialConstituentSet0
IfcLabel_0
IfcLabel
<a href="IfcMaterialConstituent.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterialConstituent.htm">IfcMaterialConstituent</a>:Name1->IfcLabel_0:IfcLabel0
<a href="IfcMaterial.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterial.htm">IfcMaterial</a>
IfcMaterial AssociatedTo
[0:?]
HasExternalReferences
[0:?]
HasProperties
[0:?]
Name
[1:1]
Description
[0:1]
Category
[0:1]
HasRepresentation
[0:1]
IsRelatedWith
[0:?]
RelatesTo
[0:1]
<a href="IfcMaterialConstituent.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterialConstituent.htm">IfcMaterialConstituent</a>:Material1-><a href="IfcMaterial.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterial.htm">IfcMaterial</a>:IfcMaterial0
IfcLabel_1
IfcLabel
<a href="IfcMaterialConstituent.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterialConstituent.htm">IfcMaterialConstituent</a>:Category1->IfcLabel_1:IfcLabel0
<a href="IfcNormalisedRatioMeasure.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcNormalisedRatioMeasure.htm">IfcNormalisedRatioMeasure</a>
IfcNormalisedRatioMeasure
<a href="IfcMaterialConstituent.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcMaterialConstituent.htm">IfcMaterialConstituent</a>:Fraction1-><a href="IfcNormalisedRatioMeasure.htm" tppabs="https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/lexical/IfcNormalisedRatioMeasure.htm">IfcNormalisedRatioMeasure</a>:IfcNormalisedRatioMeasure0
Figure 4.2.6.1.A Table 4.2.6.1.B