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  1. J

    Apartment floor joists and total load limits (not graded, built 1962)

    I’m currently converting an older building into a school with a similar floor assembly. 3x12 wood joist set into the web of steel beams spaced 20’ apart. 3/4” ply with wire mesh and 1/2” of concrete on top. Two layers of rock and furring channel below. Plenty of additional weight on the floor...
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