Definition from buildingSMART International: Instances of the entity IfcStructuralSurfaceMember shall be used to describe planar structural elements.
The material properties are defined by IfcMechanicalMaterialProperties (and subtypes) and they are connected through IfcMaterial and IfcRelAssociatesMaterial and are accessible via the inherited inverse relationship HasAssociations.
HISTORY: New entity in Release IFC2x Edition 2.
Topology Use Definition
Instances of IfcStructuralSurfaceMember shall have a topology representation. It includes a placement and a product representation. The IfcProductRepresentation shall be given by an item of Representations being of type "IfcTopologyRepresentation".
The placement for IfcStructuralSurfaceMember is determined at its supertype IfcProduct. It is defined by the optional IfcObjectPlacement, referenced by ObjectPlacement at IfcProduct, which establishes, if given, the object coordinate system that is referenced by all topological representations of that product.
Instances of IfcStructuralSurfaceMember shall have a topology representation given by a face with an optional additional geometric representation of the included surface. It can be provided by either
which should be the single item of IfcTopologyRepresentation.Items.
|PredefinedType||:||Defines the type of the structural face member.|
|Thickness||:||Defines the typically understood thickness of the structural face member, i.e. the smallest spatial dimension of the element.|