Roof Top Rainwater Harvesting Structures

Percent rainfall considered for harvesting is 70 of annual rainfall 550 mm 780 20 2000 78000.

Roof top rainwater harvesting structures.

Whilst the monsoons do come every year some areas can receive hardly any rain the rain water harvesting structures are full read more. Of roof area 55 cum can meet the. Following a good monsoon our water harvesting structures are now full. Therefore the catchment is the area which actually contributes rainwater to the harvesting system.

Rooftop rain water harvesting is the technique through which rain water is captured from the roof catchments and stored in reservoirs. Typical roof top harvesting structure under method a the down pipe is moved away from the inlet of the storage tank initially during the rains until clean water flows. The terrace may be flat rcc stone roof or sloping roof. Total annual rainfall about 780 mm.

It may be terrace courtyard or paved or unpaved open ground. We need the rains in order for the structures to work. 78000 70 100 54600 or say 55000 thus the rainwater harvested from each house of 100 sq m. Our projects depend on a good monsoon.

Components of rooftop rainwater harvesting the process involves transporting rainwater through pipes and drains filtration and storage for reuse recharge. The main objective of rooftop rain water harvesting is to make water available for future use. Roof top rain water harvesting rrwh section. Under method b storage provision for initial rain is kept in a pipe.

Here are some common components involved in these stages. These are provided between. Harvested rain water can be stored in subsurface ground water reservoir by adopting artificial recharge techniques to meet the household needs through storage in tanks. Rainfall 20 mm in single event.

Roof top collection and diversion to recharge pit factors considered for 100 sq m individual house and 500 sq m. The surface that receives rainfall directly is the catchment of rainwater harvesting system. It s in our name we harvest water.