Block would require a 16 in.
How to build a footing for a concrete block wall.
Have a helper go back to mix and dump successive loads of concrete until you have filled the trench to the appropriate level which in this example is 7 inches.
This properly spaces the form work and allows you the space you need to lay your foundation.
For example a typical 8x8x16 in.
Pour the concrete to the top of the footer.
This creates 4 straight lines 1 for each side of your wall.
Height vertical thickness of the concrete footing.
Top this with 1 inch of coarse sand or small gravel before constructing the wall proper.
What type of footing is required for a concrete block wall.
Add 2 feet 0 61 m 60 96 cm on either side.
Prepare the concrete footing where the cinder block wall will sit.
If you re building a really big wall pour them even thicker taller because the concrete footing will need to support more weight.
Mix up concrete in a wheelbarrow and dump concrete into the trench.
Align the 2 inch wide by 10 inch long 5 08 cm wide by 25 4 cm long boards to build the forms for your footings.
Tie string along each stake to mark the perimeter of the footing area.
Use an iron rake to push the concrete around as necessary.
Specifically you can make them at least 12 inches in height.
Tie string from stake to stake around the perimeter of the area.
Wide footing and extend below the frost line.
Allow it to cure overnight before removing the flat stakes.
Set your footings 2 feet 0 61 m 60 96 cm across.
Start the concrete footing by digging the area of the wall a few inches below the frost line the maximum depth in the ground below which the soil does not freeze during the winter consult a structural engineer to design the footing including where to install the vertical reinforcement which usually is placed.
It s best to pour the concrete footings thick when building mortared stone walls.
To construct a block wall you need to establish a solid footing that is a minimum of twice the width of the concrete block.
Order the concrete from a redi mix company or order bags of dry concrete and mix it on site.