Question: Design the formwork for a concrete slab 8 in. (203 mm) thick whose net width between beam faces is 15 ft (4.58 m). Concrete will be placed using a crane and bucket. The formwork is estimated to weigh 5lb/sq ft (24.1 kg/m3), Decking will be ¾ in. (l9 mm) Class I Ply form with face grain across supports. All lumber will be Southern Pine. Joists will be nominal ½-in. (50-mm) -wide lumber. One 4-in. (100-mm) -wide stringer will be placed between the beam faces. Limit deflection to ½60 of span length. Commercial shores of 4500 lb (20 kN) capacity will be used. Lateral support will be provided by the beam forms.