Concrete retaining wall footing size the depth to the bottom of the base slab should be kept at a minimum of two feet.
Making a retaining wall of concrete.
Follow the block manufacturer s instructions for wall height limits.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
Smooth the top with a trowel.
Spread additional mortar and lay cap block to finish the wall.
Of compacted base 1 in.
When you reach the finished height of the concrete block retaining wall fill those cores containing rebar to the top with mortar.
It s entirely possible to build a retaining wall without reinforcing the concrete though not advised as the reinforcing will allow you to use less material so long as the concrete always works in compression this is how the first concrete dams were built or indeed many roman buildings.
Mix the fill mortar slightly wetter than what you d use for joints.
How to build a concrete wall figure a.
Refer to the plan or schematic for the retaining wall.
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.
How to pour a concrete retaining wall.
Measure and mark footing locations.
Of leveling sand and half the height of the first course of blocks.
In general the top of the stem of any cast concrete retaining wall should not be less than 12 inches for the proper placement of concrete.