How To Install French Drain Behind Retaining Wall
For proper drainage the first 12 inches of space behind a retaining wall should be filled with crushed stone or gravel.
How to install french drain behind retaining wall. Otherwise water moving down the hill will build up behind the wall and undermine it. Installing a French drain is a simple job that requires a bit of planning and the right materials. French drains are also used behind retaining walls to relieve ground water pressure French drains aka Perimeter Drains are often installed around a home foundation during the initial construction of the structure.
If youre building a retaining wall add a French drain behind the first course of stones or blocks. If youre building a retaining wall add a French drain behind the first course of stones or blocks. Pour 1- to 2-inch washed drainage rock into the hole along the base of the.
This is so that when water gets into the space it does not become bogged down in soil but instead can flow down the wall to the drains. Then dig the trench for the drain and put the drain. 9 to 15 m intervals and direct the drains out through the wall face.
We will teach you how to install a Timber Retaining wall and proper drainage to flow any unwanted water flow away. Attach tee fittings at 30 ft. Start by picking a location for the drain that is sloped and the right type of pipe.
Paver Pete explains how to install a drain tile behind your segmental retaining wall to properly drain water away from the baseFor more information go to h. French drains are also used behind retaining walls to relieve ground water pressure. No Perforated Drain Pipe.
This will help provide drainage particularly during heavy rains. Otherwise water moving down the hill will build up behind the wall and undermine it. Backfill simply refers to the soil directly behind the wall.