All members of the plane frame in Figure are A36 steel and bend about their strong axis when sidesway buckling occurs. All girders are W27 x 94. The exterior columns are rigidly connected to the...

All members of the plane frame in Figure are A36 steel and bend about their strong axis when sidesway buckling occurs. All girders are W27 x 94. The exterior columns are rigidly connected to the girder. The interior columns are pinned at each end, but the girders are continuous (contain no hinges). Weak-axis column bracing is provided only at the column ends. For the factored loads shown, choose the lightest acceptable W14 for each column.