One key aspect of retaining wall construction is preparing a solid footing or foundation.
Retaining wall base depth.
Building codes and retaining walls 5.
A wall that leans into the soil it retains is less likely to be pushed outward by soil pressure than a plain old vertical wall.
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.
Design and build your retaining wall to slope at a minimum rate of.
The success of your retaining wall depends on a level base.
Pier and pile foundations 11.
Cantilevered tilt up walls 13.
Dig a base trench 24 in.
The leading cause of wall failure.
Counterfort retaining walls 12.
Designing the cantilever wall stem 9.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
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.
Forces on retaining walls 6.
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.
Follow the block manufacturer s instructions for wall height limits.
A level base on which the wall sits.
Earthquake seismic design 7.
This is standard for all types of landscape walls.
The depth to.
A trench filled with gravel provides a suitable foundation base for a short step back retaining wall with three five courses each layer of blocks is called a course.
Placed behind the retaining wall to promote drainage of water away from the wall.
Wood retaining walls 14.
This prevents water from building up behind the 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.
150 mm plus an additional 1 in.
25 mm for each 1 ft 300 mm of wall height for the amount or buried block that is needed.
600 mm wide the length of the wall the depth of the trench will be 6 in.
Thoroughly planned and ably performed wall construction will help to ensure the retaining wall s stability.
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.