Task 1: a) Assume the mix is made with Type I cement, with no pozzolans or admixtures,...

Task 1:

a) Assume the mix is made with Type I cement, with no pozzolans or admixtures, and that the temperature of concrete at placing is 75°F. The unit weight of concrete is 150 pcf with a slump of 3.75 inches.

Design forms for 13’-8” high wall to be concreted at the rate of 6 ft per hour, internally vibrated. The forms will be used only once, so short-term loading stresses will apply.

Use form grade plywood sheathing 7/8 in. thick in 5×10-ft sheets, and 5,250-lb coil ties are on hand Framing lumber of No. 2 Douglas Fir-Larch is to be purchased as required.

b) Draw the pressure diagram for a wall form 15 feet tall in which concrete will be placed at a rate R = 10 feet per hour when the temperature is 60^oF. Draw the diagram if the wall were only 6 feet tall.

Expert Solution

Ally Wells answered 1 year ago

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