subdrainage

subdrainage

[¦səb′drā·nij]
(civil engineering)
Natural or artificial removal of water from beneath a lined conduit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
[19] performed an isotope study in the Golmud subdrainage basin and concluded that groundwater was the main source of the salt lakes.
pulchra from creeks in the Tallapoosa subdrainage of the Mobile Bay basin (Shealy, 1976).
"The failures from the T Equipment effort to include the slices in the waterproofing and the deficient subdrainage system, in particular, have caused water damage and the freeze-and-thaw cycle damage to the concrete structure that requires attention prior to this winter to correct and reverse these conditions," the manager said.
In 2006, Locke led WQE scientists in a new round of CEAP studies in six Beasley Lake subdrainage areas with similar topographies and soil types.
Subdrainage is the control and removal of excess groundwater.
This software program, which has the acronym DEDNM (Digital Elevation Drainage Network Model), automatically extracts a fully connected channel network, with subdrainage boundaries, pathways of surface water flow, and landscape properties of the drainage basin and sub-catchments from digital elevation models.
Specifically, the guide includes procedures for evaluating existing pavements and recommendations on rehabilitation treatments, subdrainage, and foundation improvements.
Manufacturers of plastic pipe suitable for subdrainage purposes and as culvert include Aardvark Corp.; Advanced Drainage Systems Inc.; Contech Construction Products Inc.; Hancor, Inc.; Inland Steel Co., Coated Products Div.; Prinsco Inc.; Rehau Inc.; WaterPro Supplies Corp.
The Gilbert Farm Research Watershed comprises a 3.8-ha (9.4-acre) cultivated subdrainage area in northwestern Alabama.