| 摘要 |
A sub-floor water control drainage conduit element and system which minimizes installation labor, materials and time. The drainage conduit element comprises an elongate conduit section which is somewhat hemispherical or somewhat-rectangular in cross-section and has a flat base on floor wall, and a roof wall and/or sidewall. The floor wall is designed to be supported on the top surface of a footing at the wall-footing interface or in an excavation at the base of a wall. The conduit section is open to admit groundwater, such as from the wall-footing interface, and the element contains an upper vertical wall portion which is designed to extend above the basement floor surface and is spaced from the basement wall to provide a wall drain gap down to the conduit section.
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