underdrain

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underdrain

[′ən·dər‚drān]
(civil engineering)
A subsurface drain with holes into which water flows when the water table reaches the drain level.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

underdrain

underdrain
A drain, installed in porous fill, for drawing off surface water or water from the soil, as under the slab of a structure.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
On the other hand, the concrete channel underdrainage system will help to partly alleviate the existing waterlogging problem in the Project area.
The surgeon must estimate abdominal back pressure in the peritoneal cavity that will receive CSF drainage, because underdrainage may occur due to absorption incompetence (Christiansen, 2002).