Gallons Per Square Foot Of Roof

Roof area square feet per linear ft of gutter underneath. Converting this to gallons per minute per square foot gpm ft 2. 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.

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Sq ft safe for maximum rainfall reduce by 10 per 90 degree turn.

Gallons per square foot of roof.

Or 0312 gallons per minute sq. So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall. Roof area the 3 inch rainfall will produce 18 700 gallons in one hour at the rate of 312 gallons per minute. Of water 231 sq in.

Take a guess what is the volume of water that runs off a 1 000 square foot roof during a 1 rain storm. To calculate the runoff from any given rainfall. The answer is about 623 gallons. To a depth of 1 in 1 hour.

5 ft 2. Using a 10 000 sq. 1 us gallon 231 cubic inches. Rainwater can be collected from the roofs using the rain water harvesting method.

The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area. Code to add this calci to your website. Max area of roof draining to one down. Up to 6 12 7 12 8 12.

1 inch of rainfall in an hour will cover 1 sq ft. Of water in a gallon 0 623 gallons per hour. 4 ft 2. Take the dimensions of the footprint of your roof and convert them to inches.

Where rainfall rate is expressed in inches per hour and roof area is given in square feet.

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