IFC 4.3.0.1 (IFC4X3) development

8.7.3.10 IfcConnectionVolumeGeometry

8.7.3.10.1 Semantic definition

IfcConnectionVolumeGeometry is used to describe the geometric constraints that facilitate the physical connection (or overlap) of two objects at a volume defined by a solid or closed shell. It is envisioned as a control that applies to the element connection or interference relationships.

The IfcSolidModel (or the IfcClosedShell) at the VolumeOnRelatingElement attribute defines the volume where the basic geometry items of the interfering elements overlap. The volume geometry and coordinates are provided within the local coordinate system of the RelatingElement, as specified at the subtypes of the relationship IfcRelConnects that utilizes the IfcConnectionSurfaceGeometry. Optionally, the same volume geometry and coordinates can also be provided within the local coordinate system of the RelatedElement by using the VolumeOnRelatedElement attribute.

8.7.3.10.4 Formal representation

ENTITY IfcConnectionVolumeGeometry
SUBTYPE OF (IfcConnectionGeometry);
VolumeOnRelatingElement : IfcSolidOrShell;
VolumeOnRelatedElement : OPTIONAL IfcSolidOrShell;
END_ENTITY;