A pipeline is to be supported above ground on horizontal beams, 14ft long. Consider each beam to be simply supported at it ends. Each beam carries the combined weight of 50 ft of 48 in diameter pipe and the oil flowing through it about 42000 lb. Assuming the load acts at the center of the beam, specify the required section modulus of the beam to limit the bending stress to 20000 psi. then specify a suitable wide flange of the American Standard beam