You must design the joists for an elevated concrete slab using 3x8 lumber. If the joist spacing is 4 ft. and the
weight load is 140 lb./ft., what should the stringer spacing be given the following information?
Fb = 1,200 psi
Fv = 150 psi
E = 1.2 x 106 psi
= e/180 max.
(Assume two (2)-span support conditions)
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