A steel column (E = 30 ( 103 ksi) that is fixed at the base and free at the top is constructed of a W 8 ( 35 wide-flange member (see figure). The column is 9.0 ft long. The force P acting at the top of the column has an eccentricity e = 1.25 in.
(a) If P = 40 k, what is the maximum compressive stress in the column?
(b) If the yield stress is 36 ksi and the required factor of safety with respect to yielding is 2.1, what is allowable load Pallow?

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Section A