Rainwater First Flush Diverter: Difference between revisions
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10-50 gallons per 1000 sf roof need to be diverted: | =Basics= | ||
*10-50 gallons per 1000 sf roof need to be diverted: [http://www.rainharvest.com/rain-harvesting-pty-downspout-first-flush-diverter.asp] | |||
http://www.rainharvest.com/rain-harvesting-pty-downspout-first-flush-diverter.asp | *For 1250 sf [[Seed Eco-Home]] roof - 12-60 gal needed | ||
*Examining prices below, it's best to use 6" pipe - more storage, lower cost. | |||
*If store 30 gallons - 30/600 = 5% of rainfall in 1" of rain | |||
*1" of rain is 800 gallons or $8 at a rural water rate of 1 cent per gallon [http://www.ciawa.com/faqs#quest5]. That is $320 value of water per year just from rooftop catchment. | |||
=Sourcing= | =Sourcing= | ||
*Amazon - [https://smile.amazon.com/Rain-Harvesting-First-Downspout-Diverter/dp/B001OWG6BU/ref=sr_1_1?s=hi&ie=UTF8&qid=1484887189&sr=1-1&keywords=first+flush+diverter] | *Amazon - [https://smile.amazon.com/Rain-Harvesting-First-Downspout-Diverter/dp/B001OWG6BU/ref=sr_1_1?s=hi&ie=UTF8&qid=1484887189&sr=1-1&keywords=first+flush+diverter] | ||
Latest revision as of 05:02, 20 January 2017
Basics
- 10-50 gallons per 1000 sf roof need to be diverted: [1]
- For 1250 sf Seed Eco-Home roof - 12-60 gal needed
- Examining prices below, it's best to use 6" pipe - more storage, lower cost.
- If store 30 gallons - 30/600 = 5% of rainfall in 1" of rain
- 1" of rain is 800 gallons or $8 at a rural water rate of 1 cent per gallon [2]. That is $320 value of water per year just from rooftop catchment.
Sourcing
- 18 gallons/7 feet
- 8" cap is $33 - [5]
- 6" pipe - $40 for 2x the length.
- 29 gallons per 20'