7. Design the formwork for a wall 8-ft (2.44-m) high to be poured at the rate of 5 ft/h (1.53 m/h) at a temperature of 77F (25C). The concrete mixture will use Type I cement without retarders and is estimated to weigh 150 lb/cu ft (2403 kg/m). All lumber is Southern Pine. Sheathing will be 3/4-in. (19-mm) Class I Plyform with face grain across supports. All lumber is Southern Pine. Use nominal 2 x 4-in. (50 x 100-mm) studs, double 2 x 4-in. (50 x 100-mm) wales, and 3000-lb (13.3 kN) snap ties. Lateral wood bracing of 2 x 4 in. (50 x 200 mm) will be attached at a height of 5 ft (1.5 m) above the form bottom and anchored 4 ft (1.22 m) away from the base of the form. Use the allowable stresses of Table 13-8 adjusted for a 7-day load. Limit deflection to 1/360 of the span length. Design wind load is 25 lb/sq ft (1.2 kPa).