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 or weep holes.
Drain tile behind retaining wall.
First is to make sure your landscaping contractor backfills at least a foot of space behind the wall with gravel.
Use fabric behind the wall.
Fabric keeps rock and soil separate.
Typically drain lines are installed at the base of new walls before the soil is.
Second is having a perforated pipe installed along the inside or backfilled bottom of the wall.
Fabric keeps soil from leeching out of walls.
1 2 m in height or with slopes or other surcharges above the wall will need a toe drain.
Use drainage tubing behind the wall.
Install it in a u shape way behind the wall.
Any reinforced wall or walls over 4 ft.
Backfill simply refers to the soil directly behind the wall.
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.
By william machin water that s allowed to build up behind retaining walls can damage a wall or cause it to give way.
In all cases wall rock is located within the cores of the block and a minimum of 12 in.
The drain tile goes uphill behind the wall at approximately the level of the bottom of the wall.
For proper drainage the first 12 inches of space behind a retaining wall should be filled with crushed stone or gravel.
There are a number of ways to ensure proper drainage of water from behind a retaining wall.
We go about 6 8 deep behind the wall with loose rock usually crushed granite and up to the second row from the top.
For more information go to.
Paver pete explains how to install a drain tile behind your segmental retaining wall to properly drain water away from the base.
Learning how to build a retaining wall can be fun with these helpful tips.
300 mm behind the block.