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.
How many concrete blocks to build a wall.
To calculate the total number of concrete blocks needed.
Number of blocks wall area over block length mortar joint times block height mortar joint waste calculating the total cost of the blocks.
A wall typically requires 1 1 8 blocks per square foot.
Calculate how many concrete blocks are needed for your project having a width and length of 5 ft and 7 ft.
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.
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.
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.
In general block wastage is commonly between 15 for a hard block and 5 for softer ones.
Number of concrete blocks 5 x 7 16 x 8.