# | Attribute | Type | Cardinality | Description | G |
IfcObjectPlacement |
1 | PlacementRelTo | IfcObjectPlacement | ? |
Reference to object placement that provides the relative placement with its placement in a grid, local coordinate system or linear referenced placement. If it is omitted, then in the case of linear placement it is established by the origin of horizontal alignment of the referenced IfcAlignment Axis. In the case of local placement it is established by the geometric representation context.
| X |
| PlacesObject | IfcProduct @ObjectPlacement | S[0:?] | The IfcObjectPlacement shall be used to provide a placement and
an object coordinate system for instances of IfcProduct.
If an IfcObjectPlacement is shared by many instances of IfcProduct it does not apply a semantic meaning of being a shared placement that needs to be maintained. The same instance of IfcObjectPlacement could simply be used to reduce exchange file size.
IFC2x3 CHANGE New inverse attribute.
IFC4 CHANGE The cardinality has changed to 0..n to allow reuse of instances of IfcObjectPlacement as placement object in one to many products. It takes also into account that it can act as a placement for IfcStructuralAnalysisModel.
| X |
IfcLinearPlacement |
2 | PlacementMeasuredAlong | IfcCurve | |
| X |
3 | Distance | IfcDistanceExpression | |
| X |
4 | Orientation | IfcOrientationExpression | ? |
| X |
5 | CartesianPosition | IfcAxis2Placement3D | ? |
| X |
IfcLinearPlacementWithInclination |
6 | Inclinating | IfcAxisLateralInclination | |
The lateral inclination profile which defines the rule for vertical and lateral offsets when they are applied for linear placement.
| X |