Rework given Example changing dimension a to 10 ft, dimension b to 15 ft, and the point load to 15 kips.
Example
Select the most economical (lightest) structural steel wide-flange section (W shape) for the propped cantilever beam that supports the loads shown in given Figure. Consider moment and shear only. Assume A992 steel (F y =50 ksi). Neglect the weight of the beam. The vertical deflection at support A is zero.