Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
How to build a retaining wall concrete blocks.
Staring at one end place the first course of concrete blocks top side up on the crushed rock with the front lip facing up and towards the front of the wall.
Follow the block manufacturer s instructions for wall height limits.
So to make a retaining wall that will last as long as life you should consider going with concrete blocks.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
Of leveling sand and half the height of the first course of 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.
Check the level and alignment of all blocks as you go along adjusting them with a rubber mallet.
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.
The retaining wall can be made from concrete blocks poured concrete treated time boulders and rocks.
Heavy retaining wall blocks the blocks we used in our demonstration weigh 14 pounds each keep the soil at bay with their weight.
But for diyers retaining wall blocks made of concrete are the best solution.
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.
Retaining walls can be build of many different materials including wood timbers bricks or natural boulders.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
The success of your retaining wall depends on a level base.