Of leveling sand and half the height of the first course of blocks.
How to make a concrete retaining wall.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
Keep the boards less than 8 ft 2 4 m long so they aren t too difficult to handle.
Of compacted base 1 in.
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.
These wood barriers hold the concrete in place as it dries so you will need to create 2 of them.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
Poured concrete retaining walls can be colored textured accented with embedded objects and much more.
The retaining wall can be made from concrete blocks poured concrete treated time boulders and rocks.
A poured wall is much stronger and generally last many more years than a block wall.
The cheapest and easiest material to use is 2 in 4 in 5 1 cm 10 2 cm boards cut from a softwood like pine.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
If you want to build a concrete retaining wall you should consider pouring the wall rather than making it out of concrete blocks.
There are materials as well but they don t last long.
When installed properly concrete offers much more room for customization than any other retaining wall material.
Follow the block manufacturer s instructions for wall height limits.
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.
Pouring a concrete retaining wall is not that difficult and this easy to follow how to guide will show you just what to do.
Build the footing and insert rebar into the wet concrete at intervals corresponding to the cores in the blocks.
Begin digging into the ground with a shovel.
So to make a retaining wall that will last as long as life you should consider going with concrete blocks.
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.
Prepare the footing spread mortar and build leads sliding the block over the rebar as needed.
Build and prep footing lay out the wall and excavate the slope and the footing trench.