How To Figure Tank For Roof Rain Water Colection

Then add the amount of rainfall in inches.

How to figure tank for roof rain water colection.

To determine the rainwater tank and gallon size that best suits your unique scenario. Check out our rain water collection calculator to answer your questions. This simple tank calculator will help you determine how much rain you can capture in a year. This calculator helps you understand how much you can capture in a year i e.

To estimate how many gallons of water you can collect enter the dimensions of your roof including only the section that drains into your barrel. Since rainwater is collected from rooftops you will need to work out the total surface area of roof s that will be used to catch rainwater. Understand five 5 rainwater harvesting rwh variables. It is one of the factors in determing your tank size.

1 of rain on 1 000 sf roof will yield 623 gallons roof area m2 x precipitation amount mm amount collected liters. This capacity can be calculated using the following formula. Besides capture you will need to determine how much water you need i e. Call toll free 866 926 5603.

These key details are selective to rwh systems and should be considered prior to implementing a system and the rain tank that meets the size for your individual application and needs. Need help selecting which tank is right for you. Column 1 column 1 column 1 column 1. Use our water catchment and water usage calculators below to make your selection easier.

It may seem obvious but the first thing to consider when sizing your tank is how much water is available for reuse. The typical equation looks at monthly and annual rainfall totals for a specific location. The resulting figure represents the surface area of your roof in square metres. To work out the surface area simply multiply the length in metres by width for square or rectangular roofs.

Rainwater collection calculation formulas and equations roof area ft2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. Calculating your catchment capacity roughly speaking 1 millimetre of rain over 1 square metre of roof equals 1 litre of water. There are two driving factors for this variable historical rainfall and available roof space.