Use Fy = 36 ksi, five equal spaces of L, for the girder, and L, = (KL) = 20 ft for the column. Assume that the plastic hinges form only in the girders. Select the lightest acceptable W section for the...

Use Fy = 36 ksi, five equal spaces of L, for the girder, and L, = (KL) = 20 ft for the column. Assume that the plastic hinges form only in the girders. Select the lightest acceptable W section for the girders. Select the lightest acceptable W12 section for the column. Also, select the lightest acceptable W14 section for the column. Use the lighter of the two column selections.