Design the formwork for an 8-in.-thick reinforced concrete floor slab. Use 3/4-in. class II plyform and No. 2 grade Douglas fir-larch for the other lumber. Use 2 × 8 joists and double 2 × 8 stringers. Use 4 × 4 shores with an unsupported height of 10 ft. Assume that the slab will be 120 ft × 120 ft in plan. Use guy wire bracing (at 45° to the 10-ft height) that has a tensile capacity of 4400 lb.