Inverted Siphon

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inverted siphon

[in′vərd·əd ′sī·fən]
(civil engineering)
A pressure pipeline crossing a depression or passing under a highway; sometimes called a sag line from its U-shape.

Inverted Siphon


a pressured water conduit laid under the bed of a river or channel, along the sides and bottom of a deep valley or ravine, or under roads to pass an intersecting current of water (channel). Inverted siphons are placed in water-supply, sewage, and irrigation systems and in hydroelectric power installations. A distinction is made between single-hole inverted siphons, which consist of a single pipe, and multihole types, with a round or rectilinear cross section. Inverted siphons are made of reinforced concrete (most commonly), wood, and steel.

References in periodicals archive ?
At the Los Coyotes project, the Insitutube conformed to the horizontal curves and the inverted siphon with relative ease.
The inverted siphons greatly reduce the need for pumping stations and contribute to the effectiveness of the tunnel system design.
The Highlands Canal System, where work was recently completed at two separate inverted siphon locations, is made up of approximately 900 acres of land, 38 miles of canals, a 500 acre reservoir and a 100 million gallon per day (mgd) pump station on Lake Houston.
1 km long inverted siphon underneath Tuen Mun River near Tuen Yee Street; and
Award Notice: Construction of inverted siphon design to incorporate stop logs - new hospital 42" sewer line, construction phase 2
The BFID also has several inverted siphons (that is, a pipe for transporting water through a low spot, resembling the P-trap under your kitchen sink) to help transfer water across the natural drainage valleys, which lie perpendicular to the canals.
The large inverted siphons are used to convey water being carried in canals or flumes across valleys for irrigation.