Smooth the top with a trowel.
Making concrete retaining wall blocks.
If your concrete wall turns a corner build the corner with alternating corner blocks.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
Lay the first course 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.
Mix the fill mortar slightly wetter than what you d use for joints.
Begin digging into the ground with a shovel.
Spread additional mortar and lay cap block to finish the wall.
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.
How to build a concrete wall figure a.
Check the level and alignment of all blocks as you go along adjusting them with a rubber mallet.
Establish a level trench to ensure an even layer of base material.
Be sure to start alternate courses with a half block.
Follow the block manufacturer s instructions for wall height limits.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
After setting the corner block butter the ears of the adjacent block and set it.
Of space behind it.
When you reach the finished height of the concrete block retaining wall fill those cores containing rebar to the top with mortar.
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.
Start the first leg with a full corner block which is a stretcher block with a finished face on one end.
A locking flange on the blocks for this project makes your retaining wall ideas easier to accomplish.
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.
Fill the concrete cores with crushed gravel.