Design of buildings containing PT slabs.

[csd72]

I have done a couple of buildings where the Post tensioned slab was designed by the PT contractor. In each of these situations there were areas where it was a little vague as to how to treat this differently from a reinforced concrete building.

Pretending that I do not know anything about post tensioned buildings, does anyone have any advice on the design of the remainder of the building around PT slabs (i.e. things to look out for that are different from reinforced or composite)?