subdrainage

subdrainage

[¦səb′drā·nij]
(civil engineering)
Natural or artificial removal of water from beneath a lined conduit.
References in periodicals archive ?
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.
Specifically, the guide includes procedures for evaluating existing pavements and recommendations on rehabilitation treatments, subdrainage, and foundation improvements.
It also offers procedures for evaluating existing pavements and recommendations for rehabilitation treatments, subdrainage, and foundation improvements.