2. Eight times the slab thickness on each side of the stem plus the stem thickness:
3. Center-to-center spacing of the panel:
Select the flexural steel As for Mu = 562.50 kip-ft using the trial method. The effective depth d = h - 2.6 = 22.5 - 2.6 = 19.9 in.
S fy 60
Check value of a.
384.62 = T = C = abeff(0.85f) = a(90)(0.85)4 a = 1.26
Repeat the procedure using a moment arm based on the improved value of a.
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