Research Article
Development and Application of an Industry Foundation Classes-Based Metro Protection Information Model
Table 1
Comparison between the expanded IFC and the original.
| Element/Model | Expanded expression | Original expression |
| LayerElement | IfcGeoLayerElement | IfcBuildingElementProxy | MetroElement | IfcMetroElement | IfcBuildingElementProxy | GroundElement | IfcGroundElement | IfcBuildingElementProxy | ExternalElement | IfcExternalElement | IfcBuildingElementProxy | ExternalBuilding | IfcExternalBuilding | IfcBuilding | GeologicalLayer | IfcGeoLayer | IfcBuilding | MetroBuilding | IfcMetroBuilding | IfcBuilding | Ground | IfcGround | IfcBuilding |
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