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#CV-2x3-172

enable multiple mapped items as a shape representation of regular patterns
number
CV-2x3-172
based on
IFC2x3
effects
IFC2x3 coordination view 2.0
date
24. Oct 2011
initiator
ISG meeting in Budapest
summary enable multiple mapped items as a shape representation of regular patterns

 

Description

Elements having pattern like arrangement of components, such as a bolt / nail group, a group of reinforcement bars, etc. are best defined in terms of their geometry as multiple mapped items referring to the same representation map.

This implementer agreement makes a preference to export such multiple mapped items and requires the correct import of multiple mapped items. In addition it provides a guideline to implement it.

The following figure shows how multiple mapped items shall be implemented as the 'Body' shape representation of such elements, as e.g. an IfcFastener.

Use of multiple mapped items as a shape representation for elements.