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Calculate Cubic Yards « Thread Started on Mar 9, 2008, 2:01am »
If you have measured the area in inches it may be easier to convert that to feet before figuring cubic yards. I will use feet in my example.
Let's say you have a 11 foot by 10 foot area you want to fill with concrete or stone or decomposed granite.
11 foot * 10 foot = 110 square feet
Now you need the third variable (height) before you can determine a cubic foot. Let's say you want a height of 3 inches. Since we are using feet we need to convert that to feet.
3 inches / 12 inches (or 1 foot) = .25 feet
Now we can figure the cubic feet
110 * .25 = 27.5 cubic feet
We know 3 feet = 1 yard
To determine how many cubic feet make a cubic yard you need 3 variables again.
3 cubic feet in length, 3 cubic feet in width, and 3 cubic feet in height or (3 * 3 * 3 )= 1 cubic yard