Follow the block manufacturer s instructions for wall height limits.
How to build a small concrete block retaining wall.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
How to build a concrete wall figure a.
Drive long wooden stakes into the ground at each end.
If the distance is greater than 8 drive additional stakes so that the gaps do not exceed 8.
Of leveling sand and half the height of the first course of blocks.
Without a pressure relief system the weight of the water in the soil would crack or even buckle the wall.
Using a shovel mark the ground where the retaining wall will be built.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
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.
A retaining wall must provide a way to release the water that builds up in the slope behind it.
Once you ve got your base set up it just takes some finesse in building the wall up and turning corners.
Of compacted base 1 in.