A short post is being designed to support an axial compressive load of 500000 lb. It is to...

A short post is being designed to support an axial compressive load of 500000 lb. It is to be made by welding j-in thick plates of A36 steel into a square and filling the area inside with concrete, as shown in Figure. It is required to determine the dimension of the side of the post b in order to limit the stress in the steel to no more than 21 600 psi and in the concrete to no more than 1500 psi. See Section 2-10 for concrete properties. Use/,1 = 6000 psi.

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