David wrote:
angus:

I think you are referring to clash detection.

Yes, Archicad is very good at CRASH detection.
The bug reporter comes up every time just so you know for sure.

David wrote:
angus:

The MEP add-on objects (ducts, pipes) can detect clashes with building elements (walls, columns, etc) but not with each other. I believe that is the extent of clash detection within ArchiCAD presently.

MEP is the only clash detection there is at the moment which is only good when MEP objects are used.

But you would think clash detection would be fairly easy to implement seeing as walls, beams columns, etc. can all automatically cut each other when they touch.

Barry.