The area is based on the footprint of the roof which can be calculated by finding the area of the building and adding the area of the roof s overhang.
Roof based rainwater harvesting.
Rainwater is collected from a roof like surface and redirected to a tank cistern deep pit well shaft or borehole aquifer or a reservoir with percolation.
Dew and fog can also be collected with nets or other tools.
Rainwater harvesting is an excellent means of supplementing water for use on site if the process is permitted by state and or local laws.
Using rainwater where appropriate conserves potable.
The main objective of rooftop rain water.
Rooftop rain water harvesting is the technique through which rain water is captured from the roof catchments and stored in reservoirs.
Collecting rainwater runoff from roof surfaces which usually provides a much cleaner source of water that can be also used for drinking is called roof based harvesting while collecting rainwater runoff from land surfaces is called land based harvesting.
Rainwater harvesting rwh is the collection and storage of rain rather than allowing it to run off.
Use this rainwater harvesting calculator to find the answer.
512 490 0932 501 w powell ln 206 austin tx 78753 harvesting rain conserving water and managing stormwater in texas since 2004.
From rainwater the practice of collecting rainwater can be classified into two categories such as.
The practice of collecting rainwater from rainfall events can be classified into two broad categories.
Land based roof based.
Calculating your roof surface area building plans offer the easiest way to calculate your roof surface area after all the numbers should all be on there.
The image below shows how differences in roof slope do not change this building s catchment area.
As your roof surface is the catchment area for harvesting rainwater it s important to know how large or small it is so you can calculate how much rainwater you can expect to harvest.
To calculate how much rainwater that you can harvesting use the equation below.