DRAINAGE DEVICE WITH SCREEN MADE OF ANGLE SECTION Russian patent published in 2014 - IPC E02B11/00 

FIELD: construction.

SUBSTANCE: invention relates to ameliorative construction and can be used during construction of drainage systems on heavy soils. A drainage device with a screen made of an angle section includes a perforated tube with an impermeable screen, designed intermittently by length, and a drainage filling from a filtering material in places of the screen break. The perforated pipe is laid on the drain pad. The screen is made of the angle section, facing upward, in this case the angle in the upper part of the screen is equal to 180°-2α, where α - angle of internal friction of the backfill soil. Material consumption of the screen is reduced, a possibility of more dense laying of the drainage backfill soil over the screen, and prevention of the perforation hole closing in the lower part of the pipe by the screen is provided.

EFFECT: work performance is simplified.

2 dwg