It isn't. When did post-tensioned hit the market? When I was a kid I worked around pre-stressed beams.Tiger:
Is that one of those post-tensioned slabs with a thickened perimeter? If so you definitely need an engineer who knows about post-tensioned slabs. You can tell by looking at the edges of the slab, there should be about 2" concrete plugs about 12" o.c. where they tightened the cables.
Tiger:It isn't. When did post-tensioned hit the market? When I was a kid I worked around pre-stressed beams.