| Entité | Attributs |
|---|---|
| IfcRoot | GlobalId, OwnerHistory, Name, Description |
| IfcObject | ObjectType |
| IfcProduct | ObjectPlacement, Representation |
| IfcStructuralSurfaceMember | PredefinedType, Thickness |
| Nom | Type |
|---|---|
| SubsequentThickness | IfcPositiveLengthMeasure |
| VaryingThicknessLocation | IfcShapeAspect |
| VaryingThickness | IfcPositiveLengthMeasure |