| Attribute | Type | Defined By |
|---|
| HasAssignments | SET OF IfcRelAssigns (ENTITY) | IfcObjectDefinition |
| IsDecomposedBy | SET OF IfcRelDecomposes (ENTITY) | IfcObjectDefinition |
| Decomposes | SET OF IfcRelDecomposes (ENTITY) | IfcObjectDefinition |
| HasAssociations | SET OF IfcRelAssociates (ENTITY) | IfcObjectDefinition |
| IsDefinedBy | SET OF IfcRelDefines (ENTITY) | IfcObject |
| ReferencedBy | SET OF IfcRelAssignsToProduct (ENTITY) | IfcProduct |
| FillsVoids | SET OF IfcRelFillsElement (ENTITY) | IfcElement |
| ConnectedTo | SET OF IfcRelConnectsElements (ENTITY) | IfcElement |
| HasCoverings | SET OF IfcRelCoversBldgElements (ENTITY) | IfcElement |
| HasProjections | SET OF IfcRelProjectsElement (ENTITY) | IfcElement |
| HasStructuralMember | SET OF IfcRelConnectsStructuralElement (ENTITY) | IfcElement |
| ReferencedInStructures | SET OF IfcRelReferencedInSpatialStructure (ENTITY) | IfcElement |
| HasPorts | SET OF IfcRelConnectsPortToElement (ENTITY) | IfcElement |
| HasOpenings | SET OF IfcRelVoidsElement (ENTITY) | IfcElement |
| IsConnectionRealization | SET OF IfcRelConnectsWithRealizingElements (ENTITY) | IfcElement |
| ProvidesBoundaries | SET OF IfcRelSpaceBoundary (ENTITY) | IfcElement |
| ConnectedFrom | SET OF IfcRelConnectsElements (ENTITY) | IfcElement |
| ContainedInStructure | SET OF IfcRelContainedInSpatialStructure (ENTITY) | IfcElement |
| VoidsElements | IfcRelVoidsElement (ENTITY) | IfcFeatureElementSubtraction |