Figure 90 — Clearance Geometry
Elements requiring surrounding space for clearance provide a 'Clearance' representation. The reason for clearance space may be due to ventilation, maintenance, or other purpose. Examples of such elements include boilers and chillers. Such representation may be used for interference checks, where the 'Clearance' representation must not intersect with the 'Body' representation of other objects, though may intersect with the 'Clearance' representation of other objects.
The representation identifier of the clearance representation is:
Figure 90 illustrates an instance diagram.
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Figure 90 — Clearance Geometry |
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<AttributeRule AttributeName="Representation">
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<EntityRule EntityName="IfcGeometricRepresentationContext" />
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<AttributeRule RuleID="Identifier" AttributeName="RepresentationIdentifier">
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<EntityRule EntityName="IfcLabel">
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<AttributeRule Description="Value=Clearance" AttributeName="Value=Clearance" />
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<AttributeRule RuleID="Type" AttributeName="RepresentationType">
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<EntityRule EntityName="IfcLabel" />
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<AttributeRule AttributeName="Name" />
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