Of compacted base 1 in.
Making a retaining wall of concrete.
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.
Measure and mark footing locations.
Smooth the top with a trowel.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
How to build a concrete wall figure a.
Mix the fill mortar slightly wetter than what you d use for joints.
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.
Of leveling sand and half the height of the first course of blocks.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
How to pour a concrete retaining wall.
Spread additional mortar and lay cap block to finish the wall.
Follow the block manufacturer s instructions for wall height limits.
Concrete retaining wall footing size the depth to the bottom of the base slab should be kept at a minimum of two feet.
Refer to the plan or schematic for the retaining wall.
When you reach the finished height of the concrete block retaining wall fill those cores containing rebar to the top with mortar.