Weeping tile

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For the Canadian rock band from the 1990s, see Weeping Tile (band).
The pipe in the foreground is a weeping tile better known as a corrugated drain pipe or ag pipe.

A weeping tile is a porous pipe, also called a drain or perimeter tile,[1] corrugated drain pipe, or "ag pipe" in Australian English, used for underground water collection or discharge. Named in the time period when terracotta tiles were typical for drain pipes, the modern material is typically plastic pipe with small slits or weep holes in it. It is buried surrounded by aggregate larger than the slits. The aggregate rocks prevent excessive soil from falling through the slits into the weeping tile. With this arrangement, water in the surrounding soil above the weeping tile flows into the weeping tile. The weeping tile then drains into a solid pipe leading to a discharge or directly into a sump then removed by a sump pump.

It is often used for water drainage near basement foundations as a part of basement waterproofing often called a French drain. It can be used in farmers' fields to drain waterlogged fields called tile drainage. Such fields are called "tiled." Weeping tiles can be used anywhere soil needs to be drained.

Weeping tile are used for the opposite reason in the septic drain fields for septic tanks. Clarified sewage from the septic tank is fed into weeping tiles buried shallowly in the drain field. The weeping tile spreads the liquid throughout the drain field.

The weeping tile is to be installed so that the top of the product is lower than the bottom of the interior concrete floor. The weeping tile should be connected to a sump pit, located on the interior of the home. The ground water collected in the sump pit can then be removed by a sump pump. The exhausted water can be pumped a safe distance from the home by means of a flexible line or in some areas, into the city storm drains. Care should be taken not to create flooding conditions for adjoining properties.


  1. ^ Gradwell, John B., and Malcolm Welch. Technology--shaping our world. South Holland, Ill.: Goodheart-Willcox, 1991. 116. Print.