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Counterpoise lift

8 bytes added, 03:37, 2 May 2012

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[[Image:counterpoiseLift.jpg|thumb|right|300px|A counterpoise lift. Drawing: FAO.]]

[[Image:~~counterpoiseLift~~counterpoiseLift_shadoof.jpg|thumb|right|300px| Photo: A shadoof in Egypt. [http://en.wikipedia.org/wiki/File:Egypt.KomOmbo.Shaduf.01.jpg Egypt.KomOmbo.Shaduf]]]

Also known as ''shadoof'', ''shaduf'', ''dhenkli'' or ''picottach'', the counterpoise lift consists of a long wooden pole and is generally used for lifting water from unlined wells, streams or ponds and for irrigating small fields. A weight, often a large stone or a ball of dried mud or a basket filled with small stones is fixed at the shorter end of the pole to counterpoise the weight of a filled bucket which is attached to the longer arm of the pole with a rope. The bucket is emptied by a sideways tipping motion. This device is used to lift water up to a height of 1 - 3 metres. About 2000 1itres of water can be lifted from the depth of 2 to 3 metres in one hour.

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