(Answered): The structural steel framing plan of the figure represents a floor system for a narrow commercial b ...

The structural steel framing plan of the figure represents a floor system for a narrow commercial building. The floor is to support a 6 in. thick reinforced concrete slab, a live load of 150 psf and an additional future load of 20 psf. Select the lightest W shapes for BI, B2, GI, G2, and G3 Exterior wal G1 B1 15'-0 G2 B2 30-0 G3 7-0"|??0"?7-0"I 7-0-1 Tpal Exterior wall