Although this calculation is simple in principle the units can make it a headache.
Rain fell from a roof.
1 place a piece of standard metal drip edge onto a table or between a pair of sawhorses.
Anyone can begin the process of turning a home or business green by making and installing a basic rain barrel.
However there is a way that you can redirect the rain off the roof so it falls harmlessly out of the way.
A simple rain catchment system can provide water for outdoor use resulting in a lower water bill.
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The catchment areais multiplied by the depth of rain that falls on it to give the total volumeof waterproduced.
To calculate the runoff from any given rainfall.
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.
In this example 600 x 240 x 1 144 000 cubic inches of water.
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You might even want to know how many baths you could get from your rainstorm.
To get an idea how much water the roof of your own house might yield use the rainfall harvest calculator above.
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.
When you look at the numbers it s surprising how much water you can collect every time it rains.
So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall.
A service by the american water works association.
Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water.
Take the dimensions of the footprint of your roof and convert them to inches.
The system outlined below will walk you through the steps of determining your rain barrel sizes based on average roof runoff.
For example on a 2 000 square foot roof you can collect 2 000 x 0 56 1 120 gallons inch of rain.
An online drip calculator that calculates the amount of waste from your leaky faucets.
Factors such as evaporation wetting and soaking into the ground are not considered here.
The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area.
Rainwater can be collected from the roofs using the rain water harvesting method.
Rain barrel supplies list.
Code to add this calci to your website.
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.
