Quandaries and Queries


My question is:
I need to have dirt hauled away from my built in pool and the haulers are asking me how many yards of dirt there is. How would I figure that out? It is a 24 ft round pool and 3 inches of soil depth was dug out.

Thank you!



Hi Debra,

By a "24 ft round pool" I am assuming that you mean 24 feet in diameter.

When contractors say "yards" in the context they mean "cubic yards". You have a very short circular cylinder of soil to remove which has a radius of 12 ft and a height of 3 inches. The volume of a circular cylinder is given by

volume = r2 h

where r is the radius, h is the height and is approximately 3.1416. You want the volume in cubic yards so you should first change all the dimensions to yards.

12 feet is 12/3 = 4 yards

3 inches is 3/121/4 feet which is 1/4  1/3 = 1/12 yards.

Thus the volume of dirt is

42  1/12 = 4.2 cubic yards



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