How To Build A Retaining Wall With Drain Tile

Why proper drainage is important for retaining wall performance.

How to build a retaining wall with drain tile.

The toe drain and the wall rock is designed to remove incidental water from behind the wall and is. Using a tape measure decide the length and the width of your retaining wall then mark off the area with the garden stakes and string. Water that s allowed to build up behind retaining walls can damage a wall or cause it to give way. And the perforated drain tile collects the water and directs it away from the base of the wall escorting it out through its open ends.

To create a solid foundation dig a trench for the first course of your interlocking retaining wall blocks to sit in and make sure the ground remains even throughout. 300 mm behind the block. The gravel below that soil gives water that does enter a fast route to the drain tile. Design and build your retaining wall to slope at a minimum rate of.

1 2 m in height or with slopes or other surcharges above the wall will need a toe drain. Install drain tee fittings and a drain grate every 25 ft. Once a few rows have been stacked backfill the wall with rock so it matches the grade height in front of the wall and then lay down perforated drain tile on top of the rock. Typically drain lines are installed at the base of new walls before the soil is backfilled.

If the drain tiles are implemented primarily to protect the foundation from subsurface water dig the trench up to 6 feet deep. In all cases wall rock is located within the cores of the block and a minimum of 12 in. If the primary concern is surface water a trench only 2 feet deep. A retaining wall is built to hold back a certain amount of soil.

Learning how to build a retaining wall can be fun with these helpful tips. The design of a properly built retaining wall resists the force of the soil behind it and prevents caving buckling or leaning. To 50 ft depending on how much rainwater is expected to run down to the wall. A wall that leans into the soil it retains is less likely to be pushed outward by soil pressure than a plain old vertical wall.

However retaining walls are built with a certain capacity in mind. Any reinforced wall or walls over 4 ft. Cut one landscape retaining wall. Just below that is 8 to 12 in.