And it doesn t rely on sheer weight to hold back the slope as do masonry walls.
Pressure treated wood retaining wall design.
If you re building a wall with only a couple of 4 ft.
The lumber for this wall will be acq pressure treated 6 by 6 and 2 by 8 s with double hot dipped galvanized fasteners.
And finally if the retaining wall is holding back earth.
Retaining walls can be constructed with various materials from stone to wood.
Yet there is another type of wood retaining wall that uses lighter weight dimensional pressure treated lumber.
A timber retaining wall is great for reshaping a sloped yard and lending a real identity and presence to your garden area.
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Pressure treated wood should only be used for low retaining walls and limited to areas that have good drainage.
Although building inspectors are busy and shouldn t be used as a design source mine offered me some good advice.
Your fasteners should be hot dipped galvanized stainless steel or rated by the manufacturer for construction with pressure treated wood.
Because a retaining wall is going to be in contact with the ground make sure you use lumber that s rated for ground contact.
Sections you can get away with using a 4 ft.
A good looking retaining wall depends on level footings and the best way to establish level over long distances is with a builder s level.
Since wood does not bear an equal amount of pressure per square inch as does concrete or other masonry opt for a stronger material if your wall will be higher than 2 feet.
Your best choice is a pressure treated wood that has a rating of 40 or higher.
Pressure treated wood is required whenever you attach framing lumber or furring strips directly to concrete or other exterior masonry walls below grade.
There s no beating pressure treated lumber in ground contact situations.
Level but for a longer wall rent a builder s level.
Note that this requirement is only for exterior walls as these may wick moisture onto the lumber.
This retaining wall does not need unwieldy tie backs dug back into the slope like many of the 4x4 timber retaining walls.