The area moment of the beam, I, is used to calculate the deflection of the beam. If the deflection of the beam is given as 13.7 inches, the load on the beam per foot can be calculated as 2994 lb/ft. Note: the weight of the load must be added to the uniformly distributed load of 142 lb/ft. The Young's modulus, E, is 22 x 10^6 psi and the length of the beam is 20 ft. Calculate the deflection at the center of the beam. The beam has a wide-flange section.