Unless noted otherwise, neglect the weights of the members in these problem.For the pedest...

Unless noted otherwise, neglect the weights of the members in these problem.

For the pedestal of Problem, assume that the load is placed at the computed eccentricity. Calculate the maximum tensile and compressive stresses developed on a horizontal plane 3 ft below the top of the pedestal.

Problem

A concrete pedestal is in the shape of a cube and is 6 ft on each side. The pedestal supports a superimposed load of 40,000 lb located on the Y–Y axis, as shown. Calculate the maximum eccentricity e for zero tension at the base of the pedestal. Include the weight of the pedestal using a concrete unit weight of 150 pcf.