Dictionary Meaning and Definition on 'Drainage'
n : emptying accomplished by draining [syn: drain]
- Drainage \Drain"age\, n.
- A draining; a gradual flowing off of any liquid; also, that which flows out of a drain.
- The mode in which the waters of a country pass off by its streams and rivers.
- (Engin.) The system of drains and their operation, by which superfluous water is removed from towns, railway beds, mines, and other works.
- Area or district drained; as, the drainage of the Po, the Thames, etc. --Latham.
- (Surg.) The act, process, or means of drawing off the pus or fluids from a wound, abscess, etc. Drainage tube (Surg.), a tube introduced into a wound, etc., to draw off the discharges.
Wikipedia Meaning and Definition on 'Drainage'
Drainage is the natural or artificial removal of surface and sub-surface water from an area. Many agricultural soils need drainage to improve production or to manage water supplies.
The ancient Indus systems of sewerage and drainage that were developed and used in cities throughout the civilization were far more advanced than any found in contemporary urban sites in the Middle East and even more efficient than those in some areas of modern Pakistan and India today. All houses in the major cities of Harappa and Mohenjo-daro had access to water and drainage facilities. Waste water was directed to covered drains, which lined the major streets.
From the 1881 Household Cyclopedia:
This operation is always best performed in spring or summer, when the ground is dry. Main drains ought to be made in every part of the field where a cross-cut or open drain was formerly wanted; they ought to be cut four feet (1.2 m) deep, upon an average. This completely secures them from the possibility of being damaged by the treading of horses or cattle, and being so far below the small drains, clears the water finely out of them. In every situation, pipe-turfs for the main drains, if they can be had, are preferable. If good stiff clay, a single row of pipe-turf; if sandy, a double row. When pipe-turf cannot be got conveniently, a good wedge drain may answer well, when the subsoil is a strong, stiff clay; but if the subsoil be only moderately so, a thorn drain, with couples below, will do still better; and if the subsoil is very sandy, except pipes can be had, it is in vain to attempt under-draining the fiel d by any other method. It may be necessary to mention here that the size of the main drains ought to be regulated according to the length and declivity of the run, and t eihther it can be he quantity of water to be carried off by them. It is always safe, however, to have the main drains large, and plenty of them; for economy here seldom turns out well.[See more about Drainage at Dictionary 3.0 Encyclopedia]
Words and phrases related to 'Drainage'
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