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.

Figure 39 illustrates an instance diagram.

Path ConnectivityIfcElementIfcRelConnectsPathElementsIfcConnectionCurveGeometryIfcPolylineIfcCartesianPointIfcPolylineIfcCartesianPointIfcElementIfcIntegerIfcIntegerIfcConnectionTypeEnumIfcConnectionTypeEnum

Figure 39 — Path Connectivity

mvdXML Specification
<?xml version="1.0"?>
<ConceptTemplate xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="50170395-87c6-492e-a6fc-9f5f840b114f" name="Path Connectivity" applicableSchema="IFC4" applicableEntity="IfcElement">
  <Rules>
    <AttributeRule AttributeName="ConnectedFrom">
      <EntityRules>
        <EntityRule EntityName="IfcRelConnectsPathElements">
          <AttributeRules>
            <AttributeRule RuleID="RelatedElement" AttributeName="RelatedElement">
              <EntityRules>
                <EntityRule EntityName="IfcElement" />
              </EntityRules>
            </AttributeRule>
            <AttributeRule AttributeName="ConnectionGeometry">
              <EntityRules>
                <EntityRule EntityName="IfcConnectionCurveGeometry">
                  <AttributeRules>
                    <AttributeRule AttributeName="CurveOnRelatingElement">
                      <EntityRules>
                        <EntityRule EntityName="IfcPolyline">
                          <AttributeRules>
                            <AttributeRule AttributeName="Points">
                              <EntityRules>
                                <EntityRule EntityName="IfcCartesianPoint" />
                              </EntityRules>
                            </AttributeRule>
                          </AttributeRules>
                        </EntityRule>
                      </EntityRules>
                    </AttributeRule>
                    <AttributeRule AttributeName="CurveOnRelatedElement">
                      <EntityRules>
                        <EntityRule EntityName="IfcPolyline">
                          <AttributeRules>
                            <AttributeRule AttributeName="Points">
                              <EntityRules>
                                <EntityRule EntityName="IfcCartesianPoint" />
                              </EntityRules>
                            </AttributeRule>
                          </AttributeRules>
                        </EntityRule>
                      </EntityRules>
                    </AttributeRule>
                  </AttributeRules>
                </EntityRule>
              </EntityRules>
            </AttributeRule>
            <AttributeRule AttributeName="RelatingPriorities">
              <EntityRules>
                <EntityRule EntityName="IfcInteger" />
              </EntityRules>
            </AttributeRule>
            <AttributeRule AttributeName="RelatedPriorities">
              <EntityRules>
                <EntityRule EntityName="IfcInteger" />
              </EntityRules>
            </AttributeRule>
            <AttributeRule AttributeName="RelatedConnectionType">
              <EntityRules>
                <EntityRule EntityName="IfcConnectionTypeEnum" />
              </EntityRules>
            </AttributeRule>
            <AttributeRule AttributeName="RelatingConnectionType">
              <EntityRules>
                <EntityRule EntityName="IfcConnectionTypeEnum" />
              </EntityRules>
            </AttributeRule>
          </AttributeRules>
        </EntityRule>
      </EntityRules>
    </AttributeRule>
    <AttributeRule AttributeName="ConnectedTo" />
  </Rules>
</ConceptTemplate>

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