To figure out how many rows you ll need divide the ideal wall height by the height of the block.
How many concrete blocks do i need for a wall.
Retaining wall block options.
At lowe s we have several retaining wall block options to choose from.
In general block wastage is commonly between 15 for a hard block and 5 for softer ones.
For example if your standard concrete block is 1 foot by 0 5 feet and is separated from its neighbours by a half inch of mortar then each block accounts for 1 0417 x 0 5417 or 0 5643 square feet.
Number of blocks wall area over block length mortar joint times block height mortar joint waste calculating the total cost of the blocks.
The concrete block calculators provide guidance to determine building materials required for construction projects.
Make sure to account for the first row being half buried.
A wall typically requires 1 1 8 blocks per square foot.
Wall sq ft block size.
Step 5 divide the total surface area of the wall by the surface area of the representative block to get the total number of blocks in the wall.
To calculate the total number of concrete blocks needed.
Finding how many concrete blocks you need for your project can seem like a confusing and challenging task but it can be simplified using the calculator above.
8 inch 12 inch bags required.
To estimate how many blocks you ll need per row divide the total length of the wall by the length of the block.
Add yard to the total amount you will need block fill.
To simplify the process use our paver calculator to find out how many blocks you ll need.