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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...

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 77° F (25° C). The concrete mixture will use Type I cement without retarders and is estimated to weigh 150 lb/cu ft (2403 kg/m3). Sheathing will be 3/4-in. (19-mm) Class I Ply form 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 will be attached at a height of 5 ft (1.53 m) above the form bottom and anchored 4 ft (1.22 m) away from the bottom of the form. Use the allowable stresses adjusted for a 7-d load. Limit deflection to YJ60 of the span length. Design wind load is 25 lb/sq ft (1.2 kPa).

 

Jul 22 2020 Read more Less More

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