How to Build a Radius Block Wall

Create a footer for your block wall that is twice as wide as the width of the wall using the radius you want for the wall. Measure your blocks with a tape measure to determine this width. Dig down with a shovel within this area to accommodate for at least 4 inches of gravel, 2 inches of sand and half the thickness of a row of blocks, for example, an additional 2 inches for a 4-inch-thick block.

Pour gravel into your footer trench. Tamp it down with the hand tamper. Add the sand on top of this and tamp it down. Install your first row of blocks on top of the sand and tamp them into place, using the level to guide your tamping so you can ensure the first row of blocks is completely level.

Stack the second row on top of the first. If you are working with natural stone blocks, turn the blocks in random directions to create an interlocking pattern. If you are working with manufactured blocks, use the tongue-and-groove channels manufactured in the blocks to lock them together. Stack the third row on top of the second and so on and so forth.

Cut blocks down to size with the hammer and chisel. Measure with a tape measure and pencil and mark the block. Tap the chisel into the block all the way around the block so that you dig a slight channel into the block. After you have scored the entire surface of the block, place the chisel into the channel and strike it sharply with the hammer until it snaps along your score line.