4.4.2.6 Surface Geometry

Elements may have a 'Surface' representation describing the outer surface of the object. Such representation may be used for hit-testing objects having part composition such as framed walls, or for defining thermal boundaries idealized at the middle plane of an element.

The representation identifier of the surface representation is:

Figure 39 illustrates an instance diagram.

Surface GeometryIfcElementIfcProductDefinitionShapeIfcShapeRepresentationIfcGeometricRepresentationContextIfcLabelIfcLabel

Figure 39 — Surface Geometry

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