Concrete block cmu sizes concrete masonry units cmus are manufactured in a variety of sizes.
How thick for a concrete block wall.
For instance a 6 cmu is nominally 6 deep while a 10 cmu is nominally 10 deep.
They are identified by their depth i e.
A poured concrete footing for concrete block or brick walls should be at least twice as wide as the planned wall.
Input length and width of the area.
Please enter length in foot.
Measure and cut pieces of rebar as vertical reinforcement for the block wall.
Cut as many pieces as.
The footing should be at least as thick vertically as the wall s planned width.
There are two forces which act primarily upon foundation walls.
Learn how to build a low wall from concrete breezeblocks.
This calculator is to be used as an estimating tool only.
Generally the foundation should be twice as wide as the wall itself.
But the lightest buildings on the strongest soil require footings as narrow as 7 or 8 inches.
When reinforced with steel and filled with concrete a rock solid wall can be built to withstand the elements.
Under an 8 inch thick wall that s the same as saying you have no footing.
Remember to check out the full diy construction video on our website.
Concrete block also known as cinder block has been a staple of building materials for years.
The presence of reinforcing steel dramatically increases the overall strength characteristics of masonry or concrete.
The thickness of the wall they create.
Any wall higher than 2 feet requires a frost footing that extends 8 to 12 inches below the deepest winter frost level in your region.
One will be poured concrete while the other one will be standard 8 inch hollow core block.
Click the button to calculate the volume of concrete and man hours not including mixing needed for this job.
Make sure to consult local authorities on the required depth and size of the foundation for the cement block wall you are planning.
However let s compare two 8 inch thick walls.
A wall built from 8 inch blocks with a 22 inch wide foundation is 7 inches deep since 7 inches is how much footing will extend beyond the blocks.
As you can see heavy houses on weak soil need footings 2 feet wide or more.
Step 3 take the frostline into account.
If the footing needed to be a few inches deeper it could be widened and thereby deepened as well.