| Host | H | IfcSite, IfcProject or IfcFacility as host, Optional if connected to IFC Project as Root | Geometry |
| GlobalId | G | Optional Global identifier (GUID) formated to IFC string syntax. Automatic assignment if empty | Text |
| Name | N | Building Name | Text |
| Desc | D | Optional Building Description | Text |
| BridgeType | T | Optional Bridge Type Description | Text |
| ObjectPlacement | P | IfcObjectPlacement | Generic Data |
| Representation | R | Optional IfcShapeRepresentation | Geometry |
| LongName | L | Long Name | Text |
| Composition | C | Composition(0=NOTDEFINED 1=COMPLEX 2=ELEMENT 3=PARTIAL) | Integer |
| Type | T | Type (0=NOTDEFINED 1=USERDEFINED 2=ARCHED 3=CABLE_STAYED 4=CANTILEVER 5=CULVERT 6=FRAMEWORK 7=GIRDER 8=SUSPENSION 9=TRUSS) | Integer |