Namespace Xbim.Ifc2x3.MaterialPropertyResource Classes IfcExtendedMaterialProperties IfcFuelProperties IfcGeneralMaterialProperties IfcHygroscopicMaterialProperties IfcMaterialProperties IfcMechanicalConcreteMaterialProperties IfcMechanicalMaterialProperties IfcMechanicalSteelMaterialProperties IfcOpticalMaterialProperties IfcProductsOfCombustionProperties IfcRelaxation IfcThermalMaterialProperties IfcWaterProperties Enums IfcMechanicalMaterialProperties.IfcMechanicalMaterialPropertiesClause IfcMechanicalSteelMaterialProperties.IfcMechanicalSteelMaterialPropertiesClause