IFC 4.3.0.1 (IFC4X3) development

4.5.2.1 Path Connectivity

Elements based on an 'Axis' representation such as walls, beams, and columns use a path connectivity relationship to indicate parameters for the connection, indicating which side takes precedence for material layers or profiles.

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 IfcElement_0 IfcElement 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1]      HasAssignments [0:?]      Nests [0:1]      IsNestedBy [0:?]      HasContext [0:1]      IsDecomposedBy [0:?]      Decomposes [0:1]      HasAssociations [0:?] 5. ObjectType [0:1]      IsDeclaredBy [0:1]      Declares [0:?]      IsTypedBy [0:1]      IsDefinedBy [0:?] 6. ObjectPlacement [0:1] 7. Representation [0:1]      ReferencedBy [0:?]      PositionedRelativeTo [0:?]      ReferencedInStructures [0:?] 8. Tag [0:1]      FillsVoids [0:1]      ConnectedTo [0:?]      IsInterferedByElements [0:?]      InterferesElements [0:?]      HasProjections [0:?]      HasOpenings [0:?]      IsConnectionRealization [0:?]      ProvidesBoundaries [0:?]      ConnectedFrom [0:?]      ContainedInStructure [0:1]      HasCoverings [0:?]      HasSurfaceFeatures [0:?] IfcRelConnectsPathElements IfcRelConnectsPathElements 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1] 5. ConnectionGeometry [0:1] 6. RelatingElement [1:1] RelatedElement 7. RelatedElement [1:1] 8. RelatingPriorities [0:?] 9. RelatedPriorities [0:?] 10. RelatedConnectionType [1:1] 11. RelatingConnectionType [1:1] IfcElement_0:ConnectedFrom1->IfcRelConnectsPathElements:RelatedElement0 IfcElement_1 IfcElement 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1]      HasAssignments [0:?]      Nests [0:1]      IsNestedBy [0:?]      HasContext [0:1]      IsDecomposedBy [0:?]      Decomposes [0:1]      HasAssociations [0:?] 5. ObjectType [0:1]      IsDeclaredBy [0:1]      Declares [0:?]      IsTypedBy [0:1]      IsDefinedBy [0:?] 6. ObjectPlacement [0:1] 7. Representation [0:1]      ReferencedBy [0:?]      PositionedRelativeTo [0:?]      ReferencedInStructures [0:?] 8. Tag [0:1]      FillsVoids [0:1]      ConnectedTo [0:?]      IsInterferedByElements [0:?]      InterferesElements [0:?]      HasProjections [0:?]      HasOpenings [0:?]      IsConnectionRealization [0:?]      ProvidesBoundaries [0:?]      ConnectedFrom [0:?]      ContainedInStructure [0:1]      HasCoverings [0:?]      HasSurfaceFeatures [0:?] IfcRelConnectsPathElements:RelatedElement1->IfcElement_1:IfcElement0 IfcConnectionCurveGeometry IfcConnectionCurveGeometry 1. CurveOnRelatingElement [1:1] 2. CurveOnRelatedElement [0:1] IfcRelConnectsPathElements:ConnectionGeometry1->IfcConnectionCurveGeometry:IfcConnectionCurveGeometry0 IfcInteger_0 IfcInteger IfcRelConnectsPathElements:RelatingPriorities1->IfcInteger_0:IfcInteger0 IfcInteger_1 IfcInteger IfcRelConnectsPathElements:RelatedPriorities1->IfcInteger_1:IfcInteger0 IfcConnectionTypeEnum_0 IfcConnectionTypeEnum IfcRelConnectsPathElements:RelatedConnectionType1->IfcConnectionTypeEnum_0:IfcConnectionTypeEnum0 IfcConnectionTypeEnum_1 IfcConnectionTypeEnum IfcRelConnectsPathElements:RelatingConnectionType1->IfcConnectionTypeEnum_1:IfcConnectionTypeEnum0 IfcPolyline_0 IfcPolyline      LayerAssignment [0:1]      StyledByItem [0:1] 1. Points [2:?] IfcConnectionCurveGeometry:CurveOnRelatingElement1->IfcPolyline_0:IfcPolyline0 IfcPolyline_1 IfcPolyline      LayerAssignment [0:1]      StyledByItem [0:1] 1. Points [2:?] IfcConnectionCurveGeometry:CurveOnRelatedElement1->IfcPolyline_1:IfcPolyline0 IfcCartesianPoint_0 IfcCartesianPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:3] IfcPolyline_0:Points1->IfcCartesianPoint_0:IfcCartesianPoint0 IfcCartesianPoint_1 IfcCartesianPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:3] IfcPolyline_1:Points1->IfcCartesianPoint_1:IfcCartesianPoint0
Figure 4.5.2.1.A

General Usage

ApplicableEntity
RelatedElement
IfcRelConnectsPathElements.RelatedElement
IfcWall IfcWall
Table 4.5.2.1.B

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