| Entité | Attributs |
|---|---|
| IfcMaterialDefinition | HasExternalReferences, HasProperties |
| Nom | Type |
|---|---|
| MaterialLayers | IfcMaterialLayer |
| LayerSetName | IfcLabel |
| Description | IfcText |
| TotalThickness | IfcLengthMeasure |
| Entité | Liste d'attributs |
|---|---|
| IfcMaterialLayer | ToMaterialLayerSet |
| IfcMaterialLayerSetUsage | ForLayerSet |