Roof Water Harvesting Estimate

Rainwater harvesting systems range from the humble water butt used to water domestic gardens to schemes such as the millennium dome in london in 2000 where rainwater was collected from the 100 000 sqm roof and filtered through reed beds in the landscape before being returned to the dome and used to flush the 700 toilets.

Roof water harvesting estimate.

One millimetre of rain falling on one square metre of roof will give you approximately one litre of water in your tank. Model estimate of waste water disposal from tube well platform surface drain. Model estimate of pucca drain channel. 512 490 0932 501 w powell ln 206 austin tx 78753 harvesting rain conserving water and managing stormwater in texas since 2004.

There are certain advantages and disadvantages to each roofing material so here are a few considerations about the best and most widely used roofing materials for rainwater harvesting. As illustrated by this case roof top rain water harvesting measures helps in fulfilling the domestic water need as well improving the ground water level by few meters. Wondering how much rainwater you could collect off your roof. While metal roofing or plastic sheeting e g.

Metal roofs when it comes to metal roofs as well as roofs in general some of the best options are galvanized metal roofs such as steel and aluminum roofs. There s just a short list of rooftop surfaces that rainwater harvesters should avoid. Efficiency is the fraction of the runoff from the roof captured by the system 4. Model estimate of 2m brick solling road with both side drain.

Satisfaction is the fraction of the total water demand that can be met by the system 3. Rain water harvesting calculation to estimate the amount of rainfall you can expect to harvest off your roof there is a simple calculation you can do. From the water budgeting calculation the total annual water requirement was found to be 306 15 ha cm and water harvesting potential was calculated as 255 59 ha cm. Model estimate of 2m cement concrete road with both side drain.

The good news is most roofing materials are suitable for rainwater harvesting. Model estimate of roof top water harvesting. Find out your annual average rainfall and you can easily work out how much rain water you will harvest in a year. Greenhouse roof has the highest collection efficiency most surfaces are a ok.

Roof top rain water harvesting measures need to be given priority in the drought prone areas and should be incorporated in the watershed development programs.