The A992-steel W12 × 50 column is fixed at its base. Its top is constrained so that it can...

The A992-steel W12 × 50 column is fixed at its base. Its top is constrained so that it cannot move along the x - x axis but it is free to rotate about and move along the y - y axis. Determine the maximum eccentric force P that can be safely supported by the column using an interaction formula. The allowable bending stress is (σb)allow = 15 ksi.