Dig out dirt along base of wall to accommodate 6 inches of crushed stone.
How to build a retaining wall with concrete base.
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.
Water can weaken retaining walls by washing out the base material that supports the wall.
That s when walls start leaning bulging and toppling.
There are materials as well but they don t last long.
Retaining wall base trench.
Rather than messing around with mortar they lay the walls down like lego pieces using concrete while it s still in the bag.
More information on retaining walls where the base trench steps up a slope.
Uncontrolled water weakens walls.
How to build a concrete wall figure a.
Add 2 inches of stone dust to create setting bed.
Back from face of retaining wall.
That s right the idea is that.
Steps to building a retaining wall.
150 mm plus an additional 1 in.
The interlocking retaining wall block can be used to build walls up to 24 to 36 inches high depending on the size of the block.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
The success of your retaining wall depends on a level base.
Building a retaining wall in the conventional ways is not a trivial matter.
So to make a retaining wall that will last as long as life you should consider going with concrete blocks.
The retaining wall can be made from concrete blocks poured concrete treated time boulders and rocks.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
Follow the block manufacturer s instructions for wall height limits.
So diyers have come up with an interesting trick.
Of compacted base 1 in.
Stretch a level line between wood stakes to establish the wall height.
Dig a base trench 24 in.
25 mm for each 1 ft 300 mm of wall height for the amount or buried block that is needed.
Add 6 inches of stone then compact it with a hand tamper.
Dig into hillside 2 ft.
Of leveling sand and half the height of the first course of blocks.