Constrained placement

Definition

The concept of 'Constrained placement' in IFCs is exactly like the concept of Relative placement, only the name of the IFC object is different. It is important that applications implement support for understanding both Relative placement and 'Constrained placement' even if they are not able to capture or make use of the design intent expressed by the 'Constrained placement'. Applications that don't understand the design intent of the constrained placement will be able to understand the 'Constrained placement' just like they understand Relative placement. However, when these applications write out an IFC file the design intent of the 'Constrained placement' will be lost.

Used by views

• Arch. design >> Quantities take off
• Arch. design >> Thermal load calculations / HVAC system design
• HVAC system design >> Quantities take off
• CAD / visualization

Data structure

IfcConstrainedPlacement
GlobalId
OwnerHistory
Owner history [all]
PlacementRelTo
RelativePlacement
3D placement [all]

Uses concepts

3D placement [all]
Owner history [all]

Copyright © 2000-2002 BLIS-Project [BLIS, Registered Organization]
Author: Jiri Hietanen (jiri.hietanen@qpartner.com)
All rights reserved.