Design of Reinforced Concrete 10th
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4 #7
The stress in the bottom layer of steel is determined using a distance from the neutral axis of 11.17 in. instead of 10.17 in as done above. This results in a value of steel stress, fs = 13,497 psi
d = (18 x 2 x 1.27 + 21 x 4 x 1.27)/(6 x 1.27) = 20 in.
self-weight
3
