A uniform live load of 300 lb/ft and a single concentrated live force of 2 k are to be p...

A uniform live load of 300 lb/ft and a single concentrated live force of 2 k are to be placed on the floor beams. Determine (a) the maximum negative shear in panel AB, and (b) the maximum negative moment at B. Assume the supports at A and E are pins and the pipe columns only exert vertical reactions on the beams.