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.
How to make a concrete retaining wall.
These wood barriers hold the concrete in place as it dries so you will need to create 2 of them.
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.
The retaining wall can be made from concrete blocks poured concrete treated time boulders and rocks.
If you want to build a concrete retaining wall you should consider pouring the wall rather than making it out of concrete blocks.
Prepare the footing spread mortar and build leads sliding the block over the rebar as needed.
There are materials as well but they don t last long.
Here are the steps tom ralston owner of tom ralston concrete in santa cruz ca follows when pouring a retaining wall.
Of compacted base 1 in.
Of leveling sand and half the height of the first course of blocks.
Stack wood planks to create a frame for the wall.
A poured wall is much stronger and generally last many more years than a block wall.
Build the footing and insert rebar into the wet concrete at intervals corresponding to the cores in the blocks.
How to build a concrete wall figure a.
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.
So to make a retaining wall that will last as long as life you should consider going with concrete blocks.
Follow the block manufacturer s instructions for wall height limits.
Begin digging into the ground with a shovel.
Build and prep footing lay out the wall and excavate the slope and the footing trench.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
When installed properly concrete offers much more room for customization than any other retaining wall material.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
Keep the boards less than 8 ft 2 4 m long so they aren t too difficult to handle.
Poured concrete retaining walls can be colored textured accented with embedded objects and much more.