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Roof-Reliant Landscaping™ Step 11A: Sizing Your Cistern: Part 1-Roof Size
One of the first steps in any roof-reliant landscaping project is estimating the appropriate size of your water storage tank. This estimate will be required as you begin to design your landscape, estimate its cost, create your water budget and schedule the installation of your project. Knowing the exact size of your system will, of course, be of critical importance when you actually design your cistern system.
You can determine the appropriate size of your cistern by taking the following simple steps:
• Calculate the catchment area of your roof
• Estimate your “normal” rainwater harvest
• Apply the One-Third Rule
Calculate the Catchment Area of Your Roof The amount of water that can be harvested is determined by the size of the catchment area and the amount of rain that falls on that catchment area. Start by determining the size of your roof in square feet. The Figure below shows that the square footage of a rectilinear roof can be easily calculated
The amount of water that can be harvested is determined by the size of the catchment area and the amount of rain that falls on that catchment area. Start by determining the size of your roof in square feet. The figure above shows that the square footage of a rectilinear roof can be easily calculated by multiplying the length of the roof by its width.
Length (in feet) x width (in feet) = square feet
10/05/2015 | (2) Comments
Comments
Tank of water storage is too much important in home Landscaping..
Because New Mexico is an arid state with significant water challenges, there is a renewed interest statewide in the concept of rainwater harvesting and cisterns