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.
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.
Backfill simply refers to the soil directly 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.
Use drainage tubing behind the wall.
Fabric keeps soil from leeching out of walls.
Paver pete explains how to install a drain tile behind your segmental retaining wall to properly drain water away from the base.
Second is having a perforated pipe installed along the inside or backfilled bottom of the wall.
1 2 m in height or with slopes or other surcharges above the wall will need a toe drain.
The drain tile goes uphill behind the wall at approximately the level of the bottom of the wall.
This video shows you how to properly install a drainpipe behind your wall for prop.
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.
For more information go to.
300 mm behind the block.
Fabric keeps rock and soil separate.
In all cases wall rock is located within the cores of the block and a minimum of 12 in.
First is to make sure your landscaping contractor backfills at least a foot of space behind the wall with gravel.
Typically drain lines are installed at the base of new walls before the soil is.
For proper drainage the first 12 inches of space behind a retaining wall should be filled with crushed stone or gravel.
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.
Use fabric behind the wall.
Install it in a u shape way behind the wall.