How many bags of sand for 31.25 sq ft? - Answers

It depends upon the size of the bags, the density of the sand, and the depth of sand. For example, if the density is 100 lbs/cubic foot, the bags are 50 lbs each, and you want a depth of 1 inch, then: 31.25 sq ft X 1 inch X 1/12 ft/inch X 100 lbs/cubic foot / 50 lbs/bag = 5.2 bags Better get 6 bags to have enough. If the depth of sand, density of sand, or size of bags is different than what I assumed for this example, then plug your numbers into the equation above.