8.10.3.4 IfcMaterialConstituentSet
8.10.3.4.1 Semantic definition
IfcMaterialConstituentSet is a collection of individual material constituents, each assigning a material to a part of an element. The parts are only identified by a keyword (as opposed to an IfcMaterialLayerSet or IfcMaterialProfileSet where each part has an individual shape parameter (layer thickness or layer profile).
The different materials of a window construction shall be provided for the window lining and the window glazing. An IfcMaterialConstituentSet is assigned to the window with two IfcMaterialConstituent's, one with the Name = 'Lining', one with the Name = 'Glazing'. See the "Material Use Definition" at the individual element to which an IfcMaterialConstituentSet may apply for a required or recommended definition of such keywords. entity in IFC4.8.10.3.4.2 Entity inheritance
8.10.3.4.3 Attributes
| # | Attribute | Type | Description |
|---|---|---|---|
| IfcMaterialDefinition (3) | |||
| AssociatedTo | SET [0:?] OF IfcRelAssociatesMaterial FOR RelatingMaterial |
Use of the IfcMaterialDefinition subtypes within the material association of an element occurrence or element type. The association is established by the IfcRelAssociatesMaterial relationship. The inverse attribute has been added. |
|
| HasExternalReferences | SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects |
Reference to external references, e.g. library, classification, or document information, that are associated to the material. The inverse attribute has been added. |
|
| HasProperties | SET [0:?] OF IfcMaterialProperties FOR Material |
Material properties assigned to instances of subtypes of IfcMaterialDefinition. The inverse attribute has been added. |
|
| Click to show 3 hidden inherited attributes Click to hide 3 inherited attributes | |||
| IfcMaterialConstituentSet (3) | |||
| 1 | Name | OPTIONAL IfcLabel |
The name by which the constituent set is known. |
| 2 | Description | OPTIONAL IfcText |
Definition of the material constituent set in descriptive terms. |
| 3 | MaterialConstituents | OPTIONAL SET [1:?] OF IfcMaterialConstituent |
Identification of the constituents from which the material constituent set is composed. |
8.10.3.4.4 Formal representation
ENTITY IfcMaterialConstituentSet
SUBTYPE OF (IfcMaterialDefinition);
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
MaterialConstituents : OPTIONAL SET [1:?] OF IfcMaterialConstituent;
END_ENTITY;