Planning & EstimatingPregunta 73 de 100
A patio is 12 ft by 15 ft and will be poured 4 inches thick. How many cubic yards of concrete are needed (before waste)?
a.About 2.2 cubic yards
b.About 6.7 cubic yards
c.About 0.7 cubic yards
d.About 15 cubic yards
Explicación
Convert 4 inches to 0.333 feet, then 12 x 15 x 0.333 equals about 60 cubic feet, divided by 27 equals about 2.2 cubic yards. Contractors often add roughly 5 to 10 percent for waste and spillage. Ordering slightly extra avoids a short pour.
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