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.
Retaining wall drain tile installation.
Drain tile drain tile should be placed behind the wall and extruded wherever possible.
End snaps into 4 in.
Installation at ground level.
Works with block or timber.
Whether you are planning to install your own retaining wall or have someone else do it understanding how drainage should work will ensure the best possible end result.
100 mm drain tile.
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.
Use a shovel to cut up sections of turf and place them as intact as possible on a tarp for later.
The drain tile goes uphill behind the wall at approximately the level of the bottom of the wall.
A retaining wall is built to hold back a certain amount of soil.
Designed for blocks with height of 8 in.
Why proper drainage is important for retaining wall performance.
Some professional installers find that nearly 80 percent of the retaining walls they see fail at some point due to improper drainage.
Excavate a trench or series of connected trenches to accommodate the perforated drain tiles.