We go about 6 8 deep behind the wall with loose rock usually crushed granite and up to the second row from the top.
Drain tile behind retaining wall.
The toe drain and the wall rock is designed to remove incidental water from behind the wall and is not meant as primary drainage path for above or below grade water management.
Install it in a u shape way behind the wall.
First is to make sure your landscaping contractor backfills at least a foot of space behind the wall with gravel.
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.
Second is having a perforated pipe installed along the inside or backfilled bottom of the wall.
The drain tile goes uphill behind the wall at approximately the level of the bottom of the wall.
Use fabric behind the wall.
By william machin water that s allowed to build up behind retaining walls can damage a wall or cause it to give way.
There are a number of ways to ensure proper drainage of water from behind a retaining wall.
1 2 m in height or with slopes or other surcharges above the wall will need a toe drain.
Paver pete explains how to install a drain tile behind your segmental retaining wall to properly drain water away from the base.
Fabric keeps soil from leeching out of walls.
Any reinforced wall or walls over 4 ft.
This video shows you how to properly install a drainpipe behind your wall for prop.
This loose rock is probably more than other companies would use but we would rather allow more water to flow behind the wall and out than not have enough.
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.
Typically drain lines are installed at the base of new walls before the soil is.
Learning how to build a retaining wall can be fun with these helpful tips.
Fabric keeps rock and soil separate.
For more information go to.
300 mm behind the block.
In all cases wall rock is located within the cores of the block and a minimum of 12 in.