Gallons Per Square Foot Of Roof

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Gallons per square foot of roof. Roof area the 3 inch rainfall will produce 18 700 gallons in one hour at the rate of 312 gallons per minute. For example a 3 inch per hour rainfall will build up to a 3 inch depth on a flat roof in one hour at the rate of 1 87 gallons per hour sq. To a depth of 1 in 1 hour. Of water in a gallon 0 623 gallons per hour.

Sq ft safe for maximum rainfall reduce by 10 per 90 degree turn. The answer is about 623 gallons. The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area. 4 ft 2.

Rainwater can be collected from the roofs using the rain water harvesting method. 1 us gallon 231 cubic inches. To calculate the runoff from any given rainfall. Up to 6 12 7 12 8 12.

So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall. Where rainfall rate is expressed in inches per hour and roof area is given in square feet. Converting this to gallons per minute per square foot gpm ft 2. 1 inch of rainfall in an hour will cover 1 sq ft.

Take the dimensions of the footprint of your roof and convert them to inches. Take a guess what is the volume of water that runs off a 1 000 square foot roof during a 1 rain storm. Of water 231 sq in. Roof area square feet per linear ft of gutter underneath.

Or 0312 gallons per minute sq.