Starting with the column in Problem 1, perform enough additional calculations to determine the effects of increasing fc from 500
0 to 8000 psi on column capacity at both high and low axial loads. Assuming that a compressive strength of 8000 psi is appropriate for the lower stories of a high-rise structure, would you recommend using concrete with fc = 8000 psi for the columns supporting all stories within the building? Use your analysis to support your answer.
1 answer:
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