1. Calculate the allowable axial compressive load for a steel pipe column having an unbraced length of 20 ft. The ends are pin-connected. Use A=11.9 in . 2 and r=3.67 in. F y =35 ksi.
2. Calculate the allowable axial compressive load for a W12×50 structural steel column having a 12-in.-by- -in. plate bolted to each flange. The unbraced length is 32 ft. The ends are pin-connected. Use F y =36 ksi.