Under what circumstances is it appropriate/efficient to use post-tensioning for an elevated (i.e. not slab on grade) concrete slab? Specifically, I am desiging a storage building with column spacing of either 20' or 30' in each direction. I don't have experience with post-tensioned slabs, but my feeling is that it may not be appropriate for the heavy live loads (125 psf) of a storage building. Thanks.
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