Drainage tube

Details Drainage tube Drainage tube

1985-02-22

1987-01-27

Husar, Cornelius J.

Hydraulic and earth engineering

Drainage or irrigation

Porous or apertured pipe, flume, or tileway

210170, 405 43, 405 50, E02B 1100

Patent

active

046391657

ABSTRACT:
Subsoil drain strip or sheet elements comprising a core surrounded by a polymer or glass fibre filter cloth. The core has a generally planar configuration with hollow formed-in flat topped projections on one or both sides which create internal volume for flow of water as well as supporting the filter cloth against imposed soil loads. The depth of the supporting projections on each side of the core and their relative spacing is to be such that the surrounding filter cloth is restrained against being forced into the hollow interiors of the projections so that adequate longitudinal flow of water can take place in the strip without the need for additional drainage tubes to be provided. The depth of the projections may be greater than one quarter of their closest spacing. Additionally, the average diameter of the projections may be between 0.2 and 0.35 of their closest spacing.

REFERENCES:
patent: 3525663 (1970-08-01), Hale
patent: 3563038 (1971-02-01), Healy et al.
patent: 3654765 (1972-04-01), Healy et al.
patent: 3963813 (1976-06-01), Keith
patent: 4057500 (1977-11-01), Wager
patent: 4061272 (1977-12-01), Winston

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