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.
Retaining wall base width.
600 mm wide the length of the wall the depth of the trench will be 6 in.
Insufficient footing width resulting in rotation or settlement of the wall.
The success of your retaining wall depends on a level base.
When digging your trench the bottom row of blocks should be buried about 1 inch for every 8 inches of wall height.
As the wall height increases the base of the wall must become wider to ensure structural stability.
Thoroughly planned and ably performed wall construction will help to ensure the retaining wall s stability.
Gabion walls 16.
We have provided the diagrams below to illustrate a starting point for design analysis to determine the base width relative to the wall height.
The preparation of the base upon which the first layer of block are to be placed is critical to building a well placed stable retaining wall.
Also called drain tile at the base of the wall.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
Follow the block manufacturer s instructions for wall height limits.
25 mm for each 1 ft 300 mm of wall height for the amount or buried block that is needed.
Retaining wall failures are almost always attributable to poor design or poor construction.
Pier and pile foundations 11.
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.
Divide the base depth of 5 to 7 inches depending on the height of the wall by 1 944 to determine the square yardage of the depth of the gravel base beneath the wall.
Designing the cantilever wall stem 9.
Cantilevered tilt up walls 13.
Counterfort retaining walls 12.
Forces on retaining walls 6.
Dig a base trench 24 in.
Building codes and retaining walls 5.
Retaining wall base trench.
Wood retaining walls 14.
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.
One key aspect of retaining wall construction is preparing a solid footing or foundation.
Soil bearing and stability 8.
Insufficient stem width resulting in failure or excessive rotation of the stem.
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.
The base width of a gabion gravity retaining wall is directly related to the height of the wall.
Earthquake seismic design 7.