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French Drains

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A French drain or weeping tile is a trench filled with gravel or rock along with a perforated pipe that redirects surface and groundwater away from an area. The perforated pipe allows the drain to quickly vent water that seeps down through the upper gravel or rock.

 

French drains are primarily used to prevent ground and surface water from penetrating or damaging building foundations and as an alternative to open ditches or storm sewers for streets, driveways, and highways. French drains are also used behind retaining walls to relieve groundwater pressure.

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