Follow the block manufacturer s instructions for wall height limits.
How to make a concrete retaining wall.
Keep the boards less than 8 ft 2 4 m long so they aren t too difficult to handle.
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.
Poured concrete retaining walls can be colored textured accented with embedded objects and much more.
A poured wall is much stronger and generally last many more years than a block wall.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
Of leveling sand and half the height of the first course of blocks.
There are materials as well but they don t last long.
How to build a concrete wall figure a.
If you want to build a concrete retaining wall you should consider pouring the wall rather than making it out of concrete blocks.
The retaining wall can be made from concrete blocks poured concrete treated time boulders and rocks.
Here are the steps tom ralston owner of tom ralston concrete in santa cruz ca follows when pouring a retaining wall.
So to make a retaining wall that will last as long as life you should consider going with concrete blocks.
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.
These wood barriers hold the concrete in place as it dries so you will need to create 2 of them.
Build and prep footing lay out the wall and excavate the slope and the footing trench.
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.
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.
Begin digging into the ground with a shovel.
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.
Build the footing and insert rebar into the wet concrete at intervals corresponding to the cores in the blocks.
Pouring a concrete retaining wall is not that difficult and this easy to follow how to guide will show you just what to do.