The schema IfcMaterialPropertyResource contains the types and classes which are used to define material properties that can be assigned to an IfcMaterial.
To enable carrying only the relevant material properties in each exchange scenario, the properties are organized in five groups:
- General Material Properties
- Hygroscopic Material Properties
- Mechanical Material Properties
- Optical Material Properties
- Thermal Material Properties
In addition, the sixth group (Extended Material Properties) is for user defined properties that are not yet covered by the IFC specification.
Currently, only constant material properties are in the scope of IFC specification, i.e. properties that vary depending on the direction of the measurement (anisotropic materials) or on the conditions, e.g. temperature are not included. However, using IfcExtendedMaterialProperties also more complex material property definitions are possible, based on user agreements.
HISTORY This schema is new in IFC 2x.
