Gallons Per Square Foot Of Roof

5 ft 2. Roof area the 3 inch rainfall will produce 18 700 gallons in one hour at the rate of 312 gallons per minute. Converting this to gallons per minute per square foot gpm ft 2.

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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.

Gallons per square foot of roof.

To calculate the runoff from any given rainfall. So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall. 1 inch of rainfall in an hour will cover 1 sq ft. To a depth of 1 in 1 hour.

4 ft 2. Rainwater can be collected from the roofs using the rain water harvesting method. 1 us gallon 231 cubic inches. Take the dimensions of the footprint of your roof and convert them to inches.

Code to add this calci to your website. Roof area square feet per linear ft of gutter underneath. Of water in a gallon 0 623 gallons per hour. Or 0312 gallons per minute sq.

Up to 6 12 7 12 8 12. Where rainfall rate is expressed in inches per hour and roof area is given in square feet. The answer is about 623 gallons. Sq ft safe for maximum rainfall reduce by 10 per 90 degree turn.

Of water 231 sq in. The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area. Using a 10 000 sq. Max area of roof draining to one down.

Take a guess what is the volume of water that runs off a 1 000 square foot roof during a 1 rain storm.

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