A retaining wall is used to stop soil or dirt in one area typically elevated from moving down to a lower area.
How to build a concrete retaining wall footing.
One key aspect of retaining wall construction is preparing a solid footing or foundation.
Concrete retaining wall footing size the depth to the bottom of the base slab should be kept at a minimum of two feet.
Of leveling sand and half the height of the first course of blocks.
Retaining walls must be stronger than freestanding walls.
If you are new to this type of project here are a few tools and materials that you may need as well as some steps to help guide you through the process.
Because of this the footings will need to be built to create a sturdy base.
As the last step fill the cores around the rebar with mortar from the bottom to top.
This should be done at every three blocks or at intervals specified by your local codes.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
Concrete blocks are a common building material for a variety of outdoor projects such as retaining walls and out buildings like garages and tool sheds.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
Follow the block manufacturer s instructions for wall height limits.
However it should always be below the seasonal frost line and that often is much deeper in northern climates.
Of compacted base 1 in.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
Thoroughly planned and ably performed wall construction will help to ensure the retaining wall s stability.
However for even the most modest block structure to have enough rigidity to bear pressure and weight it needs proper footing.
The footing is usually made of poured concrete but in some situations homeowners may instead opt to simply use tamped earth or a gravel base.
Insert rebar in the footing when you pour it.