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Raised concrete floor slab

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A residential client would like a concrete floor at the second story.  I've done this with periodic supporting walls below, but this basement area is open with a 29 foot short direction span.  With TJIs at 16" oc and a 1-1/8" plywood deck, what would be an appropriate light weight concrete fill depth and reinforcement?  Any pointers on this subject?  Thanks.


Mark Pemberton, S.E.

Pemberton Engineering
502 Mace Blvd., Suite 2B
Davis, CA 95616

Ph:  (530) 792-0511
Fax: (530) 792-7109