Roof Area To Gallons

One gallon will cover 50 square feet of foam or modified bitumen roofing concrete or bonded tar and gravel roofing.

Roof area to gallons.

The runoff for the grass portion of drainage zone a is. Using a 10 000 sq. In the form below choose an area s and a rainfall amount to see how many gallons of water fell from the sky onto that area. Rainwater collection calculator in gallons.

So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall. Converting this to gallons per minute per square foot gpm ft 2. Rainwater can be collected from the roofs using the rain water harvesting method. Total roof area also affects runoff.

1 00 x 1 5 x 500 96 23 7 79 gallons per minute. You might even want to know how many baths you could get from your rainstorm. To a depth of 1 in 1 hour. Take the dimensions of the footprint of your roof and convert them to inches.

The runoff q for the roof area in drainage zone a is. Notice that even though the grass area is nearly 2x that of the roof the roof runoff is nearly 2x that of the. The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area. Roof area the 3 inch rainfall will produce 18 700 gallons in one hour at the rate of 312 gallons per minute.

Required roof drainage flow rate in gallons per minute 0 0104 x rainfall rate x roof area where rainfall rate is expressed in inches per hour and roof area is given in square feet. Pitch or steepness also is a factor. An inch of rain is not much but it if falls in half an hour it could flood a gutter. Highly porous concrete roofs may require more coating for proper coverage.

For all three products allow one gallon of roof coating for every 80 square feet of corrugated metal roof or 100 square feet of smooth metal roofing. To get an idea how much water the roof of your own house might yield use the rainfall harvest calculator above. Rain barrel supplies list. Either way you would like to know how much rain has fallen how many gallons have come down from the skies onto your roof yard block or town.

Roof area ft 2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. Or 0312 gallons per minute sq. To calculate the runoff from any given rainfall. Multiply across each row.

Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water. 1 of rain on 1 000 sf roof will yield 623 gallons roof area m 2 x precipitation amount mm amount collected liters other water conservation calculators. Gutters and a downspout. The answer is about 623 gallons.

0 35 x 1 5 x 900 96 23 4 91 gpm. 1 inch of rainfall in an hour will cover 1 sq ft.