The concrete foundation needed to support a cement block wall is usually created by pouring concrete into a hollow form lining the sides of the excavation trench but the concrete can also simply be poured into the trench a common scenario for construction of a freestanding landscape wall.
Making a concrete block wall.
Of compacted base 1 in.
Lay out your concrete block in a dry run spacing it with 3 8 inch plywood spacers.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
Lay out the wall and excavate the slope and the footing trench.
Of leveling sand and half the height of the first course of blocks.
Remember to check out the full diy construction video on our website.
Follow the block manufacturer s instructions for wall height limits.
Push the first block into the mortar until it s 3 8 inch above the footing.
Prepare the footing spread mortar and build leads sliding the block over the rebar as needed.
Learn how to build a low wall from concrete breezeblocks.
How to build a concrete wall figure a.
Build the footing and insert rebar into the wet concrete at intervals corresponding to the cores in the blocks.
The interlocking retaining wall block can be used to build walls up to 24 to 36 inches high depending on the size of the block.
Use a measuring tape or gps equipment to ensure that your wall is long enough.
Cost can add up quickly especially if you re a novice and have never attempted a concrete block wall installation before.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
Use a chalk or string to mark the layout of the proposed cinder block wall.
Take up the block and spread mortar on the footing.
I would strongly recommend you hire a licensed and insured concrete block wall contractor to perform the installation for you.
Mark all the edges of the course.