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2.35 The 4.5-ft concrete post is reinforced with six
steel bars, each with a 1 1/8-in. diameter Knowing that Es = 29 x 106
psi and Ec= 4,2 x 106 psi, determine the normal stresses
in the steel and in the concrete when a 350-kip axial centric force P is
applied to the post.
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