how do i exclude a specific object from clash detection from revit?

[Anonymous]

Im running clash between my Beams in structural model vs Whole arch model to see wall intersections..i want to exclude he rooms..

[Anonymous · Accepted solution]

There are more ways to this. It depends on how you make your Selection B. 

If you use "Standard" you press the + sign next to the ARCH model and then pick all categories in the ARCH model besides "Rooms".