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Save the water from rainfall to use at your own convenience!

Koolatron/Lentek RBB55 Crius Rain BarrelThis unique rain barrel combines the contemporary aesthetic elegance of authentic stone with the enduring longevity of plastic. The rain barrel is manufactured by rotation molding plastic process and is able to withstand extreme temperatures.

Want to know how much water you could save? To find out how much water your roof will collect you first need to calculate the catchment area.

L = total length of your house
W = total width of your house
(L+eaves) x (W+eaves) = Catchment
Example: (36+4) x (46+4) = 2000sqft.

-1 inch of rainfall can provide an average of 600 gallons per 1000 sq ft. catchment area.
(Catchment area/1000) x 600gallons= total gallons of water collected per 1 inch of rainfall
Example:(2000/1000) x 600gallons = 1200gallons

To find out how much you will collect in a year:
Total gallons of rain water per sq.inch x average rainfall per year in inches=total gallons per year
Example: 1200 gallons of water per sq. inch x 20 inches of rainfall a year= 24000 gallons

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  1. February 17, 2012 at 10:01 am | #1

    I love the measurements and the math! Very helpful!!

    • jaolvera
      February 17, 2012 at 10:08 am | #2

      Great! We are glad you enjoyed our post!

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