IfcMaterialLayerSetUsage_216538
IfcRelAssociatesMaterial_216539IfcRelAssociatesMaterial_216721IfcRelAssociatesMaterial_231810IfcRelAssociatesMaterial_244806IfcRelAssociatesMaterial_248239IfcRelAssociatesMaterial_293094IfcRelAssociatesMaterial_518041IfcRelAssociatesMaterial_526196IfcRelAssociatesMaterial_551282IfcRelAssociatesMaterial_551460