Using a waste factor of 10 percent, determine the number of cubic yards of concrete needed to pour the spread footing in Figure 11.41.
What will be an ideal response?
Find the volume of concrete as follows:
Volume of concrete (cy) = 8? × 17? × 2.5? = 340 cf / 27 cf per cy = 12.6 cy
Add 10% waste and round off.
Volume of concrete (cy) = 12.6 cy × 1.1 = 13.86 cy – Use 14 cy
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