For the footing shown, determine the maximum allowable load P on the centroid of an A36 steel pipe column. The pipe has an outside diameter of 30 inches and a wall thickness of 2 inches. It has an allowed stress of 1/2 sigma yield. The pipe sits on an A36 steel plate 42” by 42” by 2” thick. The concrete footing is H = 2 ft thick and B = 12 x 12 feet with an allowed stress of 3000 psi (note units). It sits on a heavy clay soil with an allowed stress of 6 k/square foot. You can omit the weight of the pipe and plate as trivial, but the weight of the concrete footing at 150 pounds per cubic foot must be accounted for.
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