the beam is 36' long and supports two water tanks 15k each and 12' and 24' points along the beam as well as an air handeler 12k in the cener of the span. the beam is made of a-36 steel. based on the loading, material, and span information, what is the maximum bending moment in k-ft. calculate the maximum transverse shear in kips. calulate the required section modulus in in^3.