Design forms for 13’-8” high wall to be concreted at the rate of
5 ft per hour, internally vibrated. 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. 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.
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