The gravel below that soil gives water that does enter a fast route to the drain tile.
How to build a retaining wall with drainage tile.
Water that s allowed to build up behind retaining walls can damage a wall or cause it to give way.
And the perforated drain tile collects the water and directs it away from the base of the wall escorting it out through its open ends.
A retaining wall is built to hold back a certain amount of soil.
300 mm behind the block.
Of packed impervious soil to help prevent water from seeping behind the wall.
A retaining wall is intended to hold back soil when there is a drastic change in elevation.
In all cases wall rock is located within the cores of the block and a minimum of 12 in.
Just below that is 8 to 12 in.
Why proper drainage is important for retaining wall performance.
A wall that leans into the soil it retains is less likely to be pushed outward by soil pressure than a plain old vertical wall.
To create a solid foundation dig a trench for the first course of your interlocking retaining wall blocks to sit in and make sure the ground remains even throughout.
The design of a properly built retaining wall resists the force of the soil behind it and prevents caving buckling or leaning.
However retaining walls are built with a certain capacity in mind.
The toe drain and the wall rock is designed to remove incidental water from behind the wall and is.
Use a shovel to cut up sections of turf and place them as intact as possible on a tarp for later.
Typically drain lines are installed at the base of new walls before the soil is backfilled.
Using a tape measure decide the length and the width of your retaining wall then mark off the area with the garden stakes and string.
Design and build your retaining wall to slope at a minimum rate of.
The success of your retaining wall depends on a level base.
Any reinforced wall or walls over 4 ft.