Once you have them all laid out you want to check and make sure they are square. You do this by measuring diagonally across the blocks. I broke it up into 3 sections, see above picture. The green lines should = the yellow lines and the red line = the blue line.
Next step is to start leveling the blocks.
- tape measure
- hand saw or circular saw
Materials needed for this step:
- 21 concrete blocks = $1.25ea.