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81 Square feet.
Volume = 120/12= 10 cubic feet for each 1 inch of depth= 2 bags for each 1 inch of depth.
22.44 gallons for each inch of the water's depth.
26928 pebbles for the minimum depth.
If your pour to a standard 4-inch depth, you will need 3.54 Cubic Yards.
81 Square feet.
Depth = 11.52 inches
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In a depth of 20,000 feet there is 5 tons per square inch of pressure.
Here's the formula: 27 cubic feet = 1 cubic yard. 1 cubic yard will cover 324 square feet at a depth of 1 inch. 2000 square feet divided by 324 square feet = 6.2 yards (rounded). Another approach: 7 cubic yard X 324 square feet = 2268 square feet of coverage at a depth of 1 inch.
Volume = 120/12= 10 cubic feet for each 1 inch of depth= 2 bags for each 1 inch of depth.
Volume = surface area * depth= 300 ft2 * (2 in * (1 ft/12 in))= 50 ft3
22.44 gallons for each inch of the water's depth.
The pressure of liquid acting on a container or other body increases at the rate of 1 atmosphere or about 14.7 lbs. per square inch for every increase of 33 feet in depth. So doing the math results in: 400ft./33ft. = 12.121. Multiplying that by 14.7 lbs. per square inch yields about 178 lbs. per square inch at 400 feet deep.
9.26 cubic yards for every inch of depth.
26928 pebbles for the minimum depth.
13.9 gallons per inch of depth.