Why proper drainage is important for retaining wall performance.
How to build a retaining wall with drainage tile.
Often retaining walls are used to terrace yards that originally had a steep slope additionally retaining walls can help create usable outdoor space as well as control erosion see landscaping a split level home low retaining walls are frequently used as planting beds and can add interest to an.
Of packed impervious soil to help prevent water from seeping behind the wall.
A retaining wall is built to hold back a certain amount of soil.
Just below that is 8 to 12 in.
Water that s allowed to build up behind retaining walls can damage a wall or cause it to give way.
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.
Any reinforced wall or walls over 4 ft.
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.
The success of your retaining wall depends on a level base.
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.
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.
300 mm behind the block.
In all cases wall rock is located within the cores of the block and a minimum of 12 in.
Design and build your retaining wall to slope at a minimum rate of.
1 2 m in height or with slopes or other surcharges above the wall will need a toe drain.
Use a shovel to cut up sections of turf and place them as intact as possible on a tarp for later.
The gravel below that soil gives water that does enter a fast route to the drain tile.
A retaining wall is intended to hold back soil when there is a drastic change in elevation.
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.