Lay out the first layer of cinder blocks.
How to build a wall out of concrete blocks.
Build the footing and insert rebar into the wet concrete at intervals corresponding to the cores in the blocks.
Retaining walls can be build of many different materials including wood timbers bricks or natural boulders.
Before you start lay out and pour footing.
Level to level blocks lengthwise and a torpedo level to level the front to back.
How to build a concrete block wall with your own hands first it is necessary to prepare a solution for masonry.
It should be a mixture of sand and cement 4 1 diluted with water to consistency suitable for work.
Lay out the wall and excavate the slope and the footing trench.
Put 3 8 inch 0 95 cm plywood spacers in between the blocks.
Lay out your concrete block in a dry run spacing it with 3 8 inch plywood spacers.
Check the level and alignment of all blocks as you go along adjusting them with a rubber mallet.
And that crooked block will affect the one above it and so on.
If your wall is straight line up the first layer of cinder blocks from one end to the other end.
Make sure joints between cap blocks are filled with mortar and smoothed with the finishing tool.
Starting at one end of the wall lay out the cinder blocks end to end until you reach the first turn in the wall.
But for diyers retaining wall blocks made of concrete are the best solution.
How to do it.
Fill the concrete cores with crushed gravel.
The tops of cement block walls are typically capped by applying a layer of mortar embedding metal reinforcement strips then covering the wall with solid concrete cap blocks.
Prepare the footing spread mortar and build leads sliding the block over the rebar as needed.
Even a pebble on the surface of stackable retaining wall blocks will throw the one above it out of alignment.
That little stone will eventually create an unattractive hump in the top course.
Once the first row is installed pack native soil to grade level on both sides of this course to anchor the wall in place.
Build end leads to corners.
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.
You can also buy a ready dry mix glue which is diluted by simply adding water and stirred with a drill with a special nozzle.