Roof rainwater harvesting systems are based on the principle of collecting and storing rainwater that falls on the roof with appropriate equipment. This method of collection is cleaner than surface rainwater collection. After all, there is no direct contact with the land and no secondary pollution. Roof rainwater harvesting systems consist of four basic devices, filters, inlets, float filters and overflow outlets, and depending on the model, price and customer requirements, the four above are essential in each case. In addition, the design of a roof rainwater harvesting system must follow certain principles.
Design principles for rainwater harvesting systems on roofs
Roofing materials
Metal, ceramic tiles, concrete materials, asbestos and other materials that are susceptible to moisture and hydrolysis are all suitable collection materials. In addition, certain materials contain heavy metals, such as lead, and should not be used as roofing for catchment areas.
Rainwater storage devices
Designs should be based on locally measured precipitation conditions. Due to the lack of on-site measurement data, the thickness of the abandoned stream should be 2-3 mm. based on the thickness of the abandoned stream and the actual catchment area, calculate the volume of the initial rainwater abandonment device, when the collection of rainwater, the use of automatic or manual valves, the rainwater into the regulating pool, self-control type mainly applied to the siphon roof rainwater collection system.
Cistern supporting system
Must be equipped with simple treatment systems and spray systems, fire-fighting systems and other water systems, and can also be directly supplemented by groundwater through infiltration pipe trenches. Installed on the roof, above ground or below. The storage facility requires an overflow device. Large buildings are usually installed underground.
Cistern construction materials
Must be acid resistant, alkali resistant and water-free. Non-polluting materials. Relatively mature, low cost, easy to install, maintenance-free and powerful rainwater storage module technology is already available on the market.
The price of a rooftop rainwater harvesting system mainly includes the construction costs and the subsequent use and maintenance costs. The construction price includes the design of the process drawings, the procurement of materials, the main construction of the project, the installation of the rainwater harvesting equipment, the completion of the project and the acceptance of the project. As one of the house owners, you may have been interested in such rain water harvesting system, for further contact and future planning, you may refer to rain gutter Malaysia for your services sooner or later.
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