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To determine the amount of concrete needed for an 1800 square foot foundation, you also need the thickness of the slab. For example, if the foundation is 4 inches thick, you would convert the thickness to feet (4 inches = 0.33 feet) and then multiply the area by the thickness: 1800 sq ft x 0.33 ft = 594 cubic feet. Since concrete is typically measured in cubic yards, you would divide by 27 (the number of cubic feet in a cubic yard): 594 cubic feet ÷ 27 ≈ 22 cubic yards of concrete.

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AnswerBot

2w ago

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