Rainwater Collection From Roof

Rainwater harvesting is the process of collecting run off rainwater from a building in order to store it for later use.

Rainwater collection from roof.

Rainwater collection calculation formulas and equations. Rainwater harvesting is collecting the run off from a structure or other impervious surface in order to store it for later use. Doesn t that sound like a lot of water that you could harvest and use for free. 1 of rain on 1 000 sf roof will yield 623 gallons.

Around 600 gallons of rainwater can be harvested from about one inch of rain if it falls from a thousand square foot roof. Now 104 years later i am thankful the authors had the foresight to preserve their knowledge for us and pointed out that rainwater collected in barrels from a roof is a necessity in some locations but also is best for laundry and often more wholesome for drinking purposes than hard water. That is why my husband and i began harvesting our rainwater. Fumes from industry and traffic.

In 2016 house bill 16 1005 was passed allowing residents to collect rainwater from a catchment system on their rooftops into two rain barrels with a combined capacity of 110 gallons. Two laws were passed in 2009 which loosened restrictions on rainwater collection allowing residents to use rainwater for non potable purposes. Don t let all that water go to waste. Typically a roof acts as the main collection source.

Dirt and germs can be washed into collected rainwater from the roof especially when rain follows several days of dry weather 3 4 9. Did you know the average roof collects 600 gallons 2 271 2 l of water for every inch of rainfall. A high quality enameled roofing material that is easy to clean standing seam metal offers the highest collection efficiency available. Roof area m2 x precipitation amount mm amount collected liters.

Roof area ft2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. If you re installing a new roof for the purpose of collecting rainwater standing seam metal may very well be your best choice. You can make a rainwater collection system for under a hundred dollars and store hundreds of gallons of water to use for your garden or other purposes. Traditionally this involves harvesting the rain from a roof.

Rain barrels for example do not provide any type of disinfection or filtration. Well we thought so too. The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel. Adding chlorine or iodine to water does not protect against chemicals and some parasites are very chlorine tolerant.