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a part of horizontal drainage structures; they act as a water-intake and overflow component. Drainpipes are used in systems for closed drainage of farmland and structures, as well as in other specialized drainage systems (such as prevention and mine drainage).

Drainpipes are made of various materials: ceramic, asbestos cement, concrete, reinforced concrete, wood, plastic, and porous materials (plastic concrete, and lightweight aggregate glass). Ceramic drainpipes, which have uniform porosity (water absorption of 12-18 percent) and high corrosion resistance and durability, are the most common type. Drainpipes are manufactured in diameters of 25-250 mm and lengths of 333, 500, and 850 mm. Ceramic drainpipes are installed very close to one another, with gaps of 1.5-2.0 mm through which the water enters. Holes or slits are made in asbestos-cement, concrete, and reinforced-concrete pipes for the intake of water. In drainpipes made from porous materials, water enters through the walls of the pipes.

Ceramic drainpipes, like clay bricks, are molded in horizontal band presses by the individual method (one bar of pipe is cast at a time), in packets (simultaneous casting of several pipes, which are soldered together), or by the separate-packet method (several pipes are cast and are immediately divided into separate pieces). Asbestos-cement, concrete, reinforced-concrete, and plastic drainpipes, as well as pipes of porous materials, are manufactured with special machine tools and instruments. Drainpipes are installed by drainlayers (the so-called trenchless method). Special cranes are used to lay the pipes in trenches.


Lukinov, M. I. Keramicheskie drenazhnye truby. Moscow, 1963.
Antonov, V. I. Plastmassovyi drenazh. Moscow, 1967.
Sbornye drenazhi iz poristykh betonnykh trub. Moscow, 1968.


References in periodicals archive ?
The special Polyfort material has sufficient melt strength to withstand the application of water in the WIT process to form a tubular structure, and a second blowing application of water forms the integrated bellows sections of the drainpipe.
And now unless the pipes are returned, the church faces a hefty bill for repairs and the replacement of the drainpipes with fibreglass replicas.
Only model figures look great in skinny trousers or jeans, because their lack of curves help the drainpipe keep its shape.
The 28-year-old fell about 14ft while shinning up a drainpipe with the intention of scrambling through an open window after discovering he had locked himself out of his flat.
All wheels have built-in drains, drainpipes, a removable side panel (attached) for removing a quantity of trims, and a double-reinforced frame for rigidity.
A great deal had been painted in the Papal colours, including the (still wet) drainpipes.
He seems to delight in having amassed a completist's collection of tissue samples from the myriad drainpipes of the digital underground.
BRAZEN metal thieves used ladders to scale houses and strip drainpipes from TEN Birmingham homes in just 24 hours.
SADNESS Canon Alan Hughes MISSING The drainpipes were at the church for centuries TARGET Thieves have stolen unique and distinctive 17th Century lead drainpipes from Berwick Parish Church, causing thousands of pounds of damage
Strangely enough, despite injuries, it was never stopped completely and as juniors it was always our aim to escape into the bigger yards where it was never played because of the lack of supporting drainpipes.
The project includes repairs to stone and lead on the tower and roof, replacement of guttering and drainpipes and window refurbishment.