Super Team

Rain Water Harvesting

What is this Ferro Cement technology used in construction of Rain water harvesting tanks?
As per explanation given by the American Institute of Concrete Technology, Ferro-Cement technology is a technique where wire mesh is used to reinforce a thin layer of concrete or wet cement. In this technique a thin wire mesh is wrapped around a frame and over which a thin layer of concrete or wet cement is applied. When the cement layer is dried up frame is removed and a second layer of cement is applied for further strengthening. When using Ferro-cement technology it increases the ratio betw ...
 
What is the maximum quantity of rain water that can be collected using rain water harvesting tank?
There are three main factors to be considered: Area of the roof in squire meters. Annual rainfall of the area in millimeters. Runoff Coefficient of rain water after exceeding the retention capacity of the roofing materials. (Runoff Coefficient of Tile & Asbestos- 0.8 and for Aluminum sheets - 0.9 )  Maximum amount of                       Area of                     Annual rain fall                      Runoff    Wate ...
 
The height of the roof of our house is less than 8 feet, Can’t we build a rain water harvesting tank?
Although the height of your roof is less than 8 feet, it is quite possible to build a rain water harvesting tank of your own. There are 2 methods that you can follow in building a rain water harvesting tank:  The rain water harvesting tanks are normally built on 11/2 to 2 feet high base. In this case the tank can be built without the 1foot high secondary base to provide required space to accommodate a pot to draw water from the tank, or Digging a pit near the outlet tap to accommodate a pot ...
 
Rainwater harvesting and moisture conservation in coconut lands
Water is an essential component for the vegetative growth and nut production of coconut palm. In areas with long spell of dry weather or scanty and ill-distributed rainfall, coconut production is reduced. So conservation of water in coconut growing area is important to ensure availability of water throughout the year. Generally an adult palm requires 600-800 litres of water once in four to seven days, depending on soil type and climatic condition.This is primarily because nutrients in the soil a ...
 
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Janathakshan Project

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No 05, Lionel Edirisinghe Mawatha,

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Email : janathakshan@practicalaction.org.lk