IFC (IFC4X3_ADD2) under development IfcMaterialProfileSetUsage Semantic definition

IfcMaterialProfileSetUsage determines the usage of IfcMaterialProfileSet in terms of its location relative to the associated element geometry. The location of a material profile set shall be compatible with the building element geometry (that is, material profiles shall fit inside the element geometry). The rules to ensure the compatibility depend on the type of the building element. For building elements with shape representations which are based on extruded solids, this is accomplished by referring to the identical profile definition in the shape model as in the material profile set. Entity inheritance Attributes

# Attribute Type Description
IfcMaterialUsageDefinition (1)
AssociatedTo SET [1:?] OF IfcRelAssociatesMaterial FOR RelatingMaterial

Use of the IfcMaterialUsageDefinition subtypes within the material association of an element occurrence. The association is established by the IfcRelAssociatesMaterial relationship.

Click to show 1 hidden inherited attributes Click to hide 1 inherited attributes
IfcMaterialProfileSetUsage (3)
1 ForProfileSet IfcMaterialProfileSet

The IfcMaterialProfileSet set to which the usage is applied.

2 CardinalPoint OPTIONAL IfcCardinalPointReference

Index reference to a significant point in the section profile. Describes how the section is aligned relative to the (longitudinal) axis of the member it is associated with. This parametric specification of profile alignment can be provided redundantly to the explicit alignment defined by ForProfileSet.MaterialProfiles[*].Profile.

3 ReferenceExtent OPTIONAL IfcPositiveLengthMeasure

Extent of the extrusion of the elements body shape representation to which the IfcMaterialProfileSetUsage applies. It is used as the reference value for the upper OffsetValues[2] provided by the IfcMaterialProfileWithOffsets subtype for included material profiles.

Table Examples Formal representation

ENTITY IfcMaterialProfileSetUsage
 SUBTYPE OF (IfcMaterialUsageDefinition);
	ForProfileSet : IfcMaterialProfileSet;
	CardinalPoint : OPTIONAL IfcCardinalPointReference;
	ReferenceExtent : OPTIONAL IfcPositiveLengthMeasure;
END_ENTITY; References

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