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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
For the concrete post of Prob. 9.27, determine the maximum cen- Problems tric force that can be applied if the allowable normal stress is 20 ksi in the steel and 2.4 ksi in the concrete.
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Problem 9.27
The 4.5-ft concrete post is reinforced with six steel bars, each with a
-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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