All concrete block walls both structural and non structural require a solid poured concrete footing.
How to build a wall on concrete blocks.
Make sure the footing depth extends below the frost line and check local building codes for construction requirements in your area.
Lay out your concrete block in a dry run spacing it with 3 8 inch plywood spacers.
Lay out the wall and excavate the slope and the footing trench.
Build end leads to corners.
Build the footing and insert rebar into the wet concrete at intervals corresponding to the cores in the blocks.
How to build a concrete block wall with your own hands first it is necessary to prepare a solution for masonry.
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.
Before you start lay out and pour footing.
Build up the wall.
Level to level blocks lengthwise and a torpedo level to level the front to back.
Prepare the footing spread mortar and build leads sliding the block over the rebar as needed.
Check the level and alignment of all blocks as you go along adjusting them with a rubber mallet.
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.
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.
Standard 8 x 8 x 16 blocks would require a 16 wide footing.
It should be a mixture of sand and cement 4 1 diluted with water to consistency suitable for work.
Once the first row is installed pack native soil to grade level on both sides of this course to anchor the wall in place.