Make sure the footing depth extends below the frost line and check local building codes for construction requirements in your area.
How to build a wall on concrete blocks.
Prepare the footing spread mortar and build leads sliding the block over the rebar as needed.
Lay out the wall and excavate the slope and the footing trench.
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.
The concrete foundation needed to support a cement block wall is usually created by pouring concrete into a hollow form lining the sides of the excavation trench but the concrete can also simply be poured into the trench a common scenario for construction of a freestanding landscape wall.
Once the first row is installed pack native soil to grade level on both sides of this course to anchor the wall in place.
Level to level blocks lengthwise and a torpedo level to level the front to back.
Check the level and alignment of all blocks as you go along adjusting them with a rubber mallet.
How to build a concrete block wall with your own hands first it is necessary to prepare a solution for masonry.
Build the footing and insert rebar into the wet concrete at intervals corresponding to the cores in the blocks.
Before you start lay out and pour footing.
Build end leads to corners.
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.
Build up the wall.
How to do it.
Standard 8 x 8 x 16 blocks would require a 16 wide footing.
All concrete block walls both structural and non structural require a solid poured concrete footing.
Install the first course of blocks using a taut string line to establish a straight row.