IFC 4.3.x development

8.7.3.10 IfcConnectionVolumeGeometry

Change log

IFC4

added

8.7.3.10.1 Semantic definitions at the entity

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.

HISTORY   New entity in IFC4.

8.7.3.10.1 Attributes

#Attribute Type Description
IfcConnectionGeometry
IfcConnectionVolumeGeometry
1VolumeOnRelatingElementIfcSolidOrShell Volume at which related object overlaps with the relating element, given in the LCS of the relating element.
2VolumeOnRelatedElement OPTIONAL IfcSolidOrShellVolume at which related object overlaps with the relating element, given in the LCS of the related element.

8.7.3.10.2 Entity inheritance

dot_inheritance IfcConnectionVolumeGeometry IfcConnectionVolumeGeometry IfcConnectionGeometry IfcConnectionGeometry IfcConnectionVolumeGeometry->IfcConnectionGeometry IfcConnectionGeometry_children 3 more... IfcConnectionGeometry_children->IfcConnectionGeometry

8.7.3.10.3 Formal representations

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