The drain tile goes uphill behind the wall at approximately the level of the bottom of the wall.
Retaining wall drain tile installation.
Drain tile drain tile should be placed behind the wall and extruded wherever possible.
There is no need to prepare a special base for the drain tile itself of course you need a base for the block that makes up the wall as you indicated.
Installation at ground level.
Backfilling the space behind the blocks with crushed stone and then installing a flexible perforated drainpipe available at the home depot also called drain tile at the base of the wall could.
Retaining wall front drain tile extruded through the face of the wall figure 2 main discharge extruded at the end of the retaining wall drainage fill.
Why proper drainage is important for retaining wall performance.
Use a shovel to cut up sections of turf and place them as intact as possible on a tarp for later.
Excavate a trench or series of connected trenches to accommodate the perforated drain tiles.
Designed for blocks with height of 8 in.
This means the drain tile may have to be extruded through the face of the wall figure 2 or at the end of the wall figure 3.
A retaining wall is built to hold back a certain amount of soil.
Works with block or timber.
The design of a properly built retaining wall resists the force.
Some professional installers find that nearly 80 percent of the retaining walls they see fail at some point due to improper drainage.