The 4.5-ft concrete post is reinforced with six steel bars, each with a 11 8-in. diameter. Knowing that Es 5 29 3 106 psi and Ec 5 4.2 3 106 psi, determine the normal stresses in the steel and in the concrete when a 350-kip axial centric force P is applied to the postn
 

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P 18 in. 4.5 ft Fig. P2.35 P 18 in. 4.5 ft Fig. P2.35