Roof Runoff Collection

Home sustainability in the urban environment collection of roof runoff.

Roof runoff collection.

The system outlined below will walk you through the steps of determining your rain barrel sizes based on average roof runoff. From washing the car pets and laundry to bathing and drinking depending on the purification system and local regulations. The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel. Find the square footage of your roof by measuring the footprint of the roof the slope of the roof doesn t affect the catchment potential.

1 of rain on 1 000 sf roof will yield 623 gallons roof area m2 x precipitation amount mm amount collected liters. Rain can wash different types of contaminants into the water you collect for example bird poop on your roof could end up in your water barrel or tank. 2 each collecting 25 of the runoff. Also outlined are the steps to build your own rain barrel to collect water from your roof and downspout for all outdoor uses like watering and cleaning.

If you have heavy runoff from roof downspouts and neighboring properties redirecting or capturing runoff can provide better control. Rainwater runoff from your roof contains a mix of materials deposited by pollution and animals as well as chemicals used in the manufacture of the shingles. Roof runoff was caught by a commercial galvanized gutter of 1 22 m wide installed at the end of each roof. Additionally rain collection can abate drainage problems along with soil and foundation erosion from storm runoff and water pooling.

Traditionally this involves harvesting the rain from a roof. Rainwater collection calculation formulas and equations roof area ft2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. Rainwater can carry bacteria parasites viruses and chemicals that could make you sick and it has been linked to disease outbreaks 3 4. Rainwater can be used for a myriad of indoor and outdoor purposes.

For sample purposes a 55 gallon barrel will be used. Rainwater harvesting is collecting the run off from a structure or other impervious surface in order to store it for later use. There were two splitters in the collection apparatus fig. Fumes from industry and traffic.

The collected runoff was drained into a sample collection apparatus through a galvanized down spout.