Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
How to build a solid concrete retaining wall.
The success of your retaining wall depends on a level base.
Foundation all concrete block walls must rest on a sturdy foundation of poured concrete.
Poured concrete retaining walls can be colored textured accented with embedded objects and much more.
Of compacted base 1 in.
But unless you give serious thought to what goes on behind and below the wall the retaining wall design may not look good for long.
How to build a concrete wall figure a.
The depth and size of the foundation will vary depending on the size of the concrete block wall and the weight it must support but a typical freestanding wall requires a foundation that is about twice as wide as the wall itself and which extends about 1 foot down below the frost line.
Of leveling sand and half the height of the first course of blocks.
Concrete blocks are ideal for building walls to hold back the soil after you dig into a slope for a pathway patio or another landscaping project block retaining walls are generally the same as freestanding block walls but with a few important differences.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
Using a tape measure decide the length and the width of your retaining wall then mark off the area with the garden stakes and string.
To create a solid foundation dig a trench for the first course of your interlocking retaining wall blocks to sit in and make sure the ground remains even throughout.