If your wall is to a be a single brick wide and only 500mm high then an 8 inch conversion 8 x 2 54cm 20 3cm wide and 6 inch deep click to convert is more than adequate but adequate provision is needed depending on requirements.
How much concrete do i need for a retaining wall.
The footing dimensions will largely be determined by the size of the wall.
Make sure to account for the first row being half buried.
Start by measuring the wall width and height.
Determine the planned wall s height and width.
Consider getting several professional estimates to get the best labor cost and find the right company for your project.
As an example one 4sons concrete customer wanted 20 yards of driveway demolished and 8 yards of retaining wall built in their garden.
To estimate how many blocks you ll need per row divide the total length of the wall by the length of the block.
The spacing between the stakes will depend on how thick your retaining wall will be and the thickness of the wooden planks used as the forms.
Here i have divided the retaining wall into two parts part a is the base slab and part b is the stem of retaining wall.
Just enter the dimensions of your wall project and the concrete block calculator will figure out how many blocks are needed.
For example if the desired wall height is 6 feet the wall should be embedded below grade by 7 8 inches.
The depth of the concrete is always something you need to interpret based on the height and width of the wall.
Most experts suggest embedding the first course of blocks below grade about 10 of the wall height to support the wall correctly.
To calculate the volume of retaining wall we need to calculate the volume of retaining wall.
For example a 10 x 10 wall using a 16 x 8 x 8 block will require an estimated 120 blocks and cost about 185 for material.
So volume of retaining wall volume of base slab volume of stem.
If you re building a retaining wall then check out our retaining wall calculator.
A poured concrete footing for concrete block or brick walls should be at least twice as wide as the planned wall.
For example if you are pouring a retaining wall that will be 12 inches thick and will use wooden planks that are 1 1 2 inches thick for your forms you ll need to space the stakes about 15 inches apart.
The footing should be at least as thick vertically as the wall s planned width.
Our concrete wall calculator or estimator helps you determine how much material you need and takes the guesswork out of buying concrete mix.
For a stacked block retaining wall that s no higher than four feet a trench filled with three inches of crushed rock will help keep the wall from shifting and settling.
The exact depth of the.