Capture Rain Water From Roof

Once you have the square footage number enter it into the rainwater collection calculator above.

Capture rain water from roof.

Use the zoom tool in the lower right hand corner of the map to get closer so you can see draw on your roof. The is usually capture of the runoff via gutters or tanks as most thatched roofs do not usually have capture structures attached. 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. Did you know the average roof collects 600 gallons 2 271 2 l of water for every inch of rainfall.

Rainwater harvesting is collecting the run off from a structure or other impervious surface in order to store it for later use. The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel. The area measurement will appear right above the map. Dirt and germs can be washed into collected rainwater from the roof especially when rain follows several days of dry weather 3 4 9.

Rain barrels for example do not provide any type of disinfection or filtration. Just lay the tarp out on an elevated area and run a drainpipe from the lowest corner to a collection tank. It is important to note that 1mm of rain falling on 1m 2 of wet roof area will yield 1 litre of water. Adding chlorine or iodine to water does not protect against chemicals and some parasites are very chlorine tolerant.

If you want to collect rainwater without a roof or downspout you can use a tarp instead. In the main hard roof areas tiles coated steel are the better options as this provide better surfaces that are easier to clean but can also be used to. Don t let all that water go to waste. To work out the surface area simply multiply the length in metres by width for square or rectangular roofs.

To collect rainwater you can attach a rain barrel to your home s downspout so when it rains the water flows directly into the barrel. The resulting figure represents the surface area of your roof in square metres. Assuming your house is rectangular once you know the length and width you simply multiply both together. So 15 steps 11 4m by 22 steps 16 72m provides a rainfall capture area of 190 6m 2 11 4m x 16 72m.

Some information on designs may or may not be of any use. Then click on the outer points of your roof and a polygon will instantly be created. Since rainwater is collected from rooftops you will need to work out the total surface area of roof s that will be used to catch rainwater. Rainwater capture and storage system at the modern heritage property.