FIELD: construction.
SUBSTANCE: drainage device with a ring screen comprises a perforated pipe with a screen made as closed along the perimeter of the cross section and interrupted along length, and filtering material sprinkled in areas of screen break. The screen is made of identical elastic metal cord recycled car tyres connected to each other at the ends by means of a mechanical link.
EFFECT: improved water drainage capacity of a device due to automatic self-regulation of screen permeability and prevention of pipe lower part closure with screens.
2 dwg
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