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Q1. A concrete plank is hollowed-out with two circular areas and it is subjected to two bending moments Mz -50 kip-ft and My 20 kip-ft as shown in the figure on the right. The geometric parameters are given as: b 2 ft, h-1 ft,d-7 in., a-5.5 in. Determine (i) the bending stresses at the points A and D. (ii) the angle ф that the neutral axis makes with the +z- axis. typ)

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Please show all work so I can follow. Q1. A concrete plank is hollowed-out with two...
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