IFC Object Model Reference
Industry Foundation Classes - Release 1.5
Model Reference Documentation
Final Version
IfcArchitecture IfcFacilitiesMgmt IfcSharedBldgElements IfcSharedBldgServiceElements IfcDocumentExtension IfcModelingAidExtension IfcProductExtension IfcProcessExtension IfcKernel IfcUtilityResource IfcGeometryResource IfcMeasureResource IfcPropertyResource IfcPropertyTypeResource

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