IFC 4.3.0.0 (IFC4X3) final

4.9.1.4 Type Clearance Geometry

For elements that require clearance such as for safety, maintenance, or other purpose, this represents the 3D clearance volume of the item having RepresentationType of 'Surface3D'. Such clearance region indicates space that should not intersect with the 'Body' representation of other elements, though may intersect with the 'Clearance' representation of other elements.

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 IfcDistributionElementType IfcDistributionElementType 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:?] ApplicableOccurrence [0:1] HasPropertySets [1:?] Types [0:1] RepresentationMaps [1:?] Tag [0:1] ReferencedBy [0:?] ElementType [0:1] IfcRepresentationMap IfcRepresentationMap MappingOrigin [1:1] MappedRepresentation [1:1] HasShapeAspects [0:?] MapUsage [0:?] IfcDistributionElementType:RepresentationMaps1->IfcRepresentationMap:IfcRepresentationMap0 IfcShapeRepresentation IfcShapeRepresentation ContextOfItems [1:1] RepresentationIdentifier [0:1] Type RepresentationType [0:1] Geometry Items [1:?] RepresentationMap [0:1] LayerAssignments [0:?] OfProductRepresentation [0:?] OfShapeAspect [0:1] IfcRepresentationMap:MappedRepresentation1->IfcShapeRepresentation:IfcShapeRepresentation0 IfcAxis2Placement3D IfcAxis2Placement3D LayerAssignment [0:1] StyledByItem [0:1] Location [1:1] Axis [0:1] RefDirection [0:1] IfcRepresentationMap:MappingOrigin1->IfcAxis2Placement3D:IfcAxis2Placement3D0 IfcAxis2Placement2D IfcAxis2Placement2D LayerAssignment [0:1] StyledByItem [0:1] Location [1:1] RefDirection [0:1] IfcRepresentationMap:MappingOrigin1->IfcAxis2Placement2D:IfcAxis2Placement2D0 IfcGeometricRepresentationContext IfcGeometricRepresentationContext ContextIdentifier [0:1] ContextType [0:1] RepresentationsInContext [0:?] CoordinateSpaceDimension [1:1] Precision [0:1] WorldCoordinateSystem [1:1] TrueNorth [0:1] HasSubContexts [0:?] HasCoordinateOperation [0:1] IfcShapeRepresentation:ContextOfItems1->IfcGeometricRepresentationContext:IfcGeometricRepresentationContext0 IfcLabel_0 IfcLabel IfcShapeRepresentation:RepresentationIdentifier1->IfcLabel_0:IfcLabel0 IfcLabel_1 IfcLabel IfcShapeRepresentation:RepresentationType1->IfcLabel_1:IfcLabel0 IfcBoundedSurface IfcBoundedSurface LayerAssignment [0:1] StyledByItem [0:1] IfcShapeRepresentation:Items1->IfcBoundedSurface:IfcBoundedSurface0
Figure 4.9.1.4.A

General Usage

ApplicableEntity
IfcDistributionFlowElementType
Table 4.9.1.4.B