What kind of wood should I use for a retaining wall?
The best kind of lumber for these walls is Douglas fir pressure treated with preservatives to discourage rot. It will be green or brown in color and rated for earth-to-wood contact. For timber walls, large timbers for can be very expensive, which is why railroad ties are a common alternative.
Can you build a retaining wall out of wood?
Retaining walls can be constructed with various materials from stone to wood. Pick a building material that will work with the look and feel of your yard. Some materials can be used to create curves; but a retaining wall made of timber will be straight.
How high can you build a wood retaining wall?
Your walls can be as long as you want, but limit the height to 4 ft. Add more terraces as needed to retain higher slopes, stepping them back about 4 ft.
What is the easiest retaining wall to build?
While retaining walls of this type are relatively inexpensive, they can be difficult to repair or remove. For the average do-it-yourselfer, building a retaining wall is easiest when using masonry blocks that will be stacked no taller than three feet, with no mortar binding the stones or concrete members.
Do I need drainage behind retaining wall?
Drainage. Third, since most retaining walls are impervious, which means water cannot pass through the wall itself, efficient drainage is crucial. When drainage goes unaddressed hydrostatic pressure will build up behind the wall and cause damage such as bulging or cracking.
How long will a 6×6 retaining wall last?
Pressure-treated timbers are typically what you use for a timber retaining wall. The fun fact about pressure treated wood is that it is warrantied – but putting it in continuous contact with the ground voids the warranty. Even so, you can reasonably expect to get anywhere from 10-20 years out of a timber wall.
How do you build a wood retaining wall on a sloped yard?
How to Build a Wood Retaining Wall
- Step 1: Remove Soil and Dig a Trench.
- Step 2: Prepare the Timbers.
- Step 3: Drive Rebar Stakes.
- Step 4: Drill Holes for Spikes.
- Step 5: Lay the Drainpipe.
- Step 6: Put the Deadmen and Tiebacks in Place.
- Step 7: Lay the Remaining Courses.
- Step 8: Fill With Topsoil.
Are wood retaining walls good?
Wood retaining walls provide structure, stability, and natural beauty to gardens and landscaping projects. They continue to be a popular choice because of the natural look they provide and because of their low price point, relative to expensive masonry and concrete retaining walls.
How do you build a hillside retaining wall?
- Place the drain pipe at the lowest possible point toward the back of the trench.
- Place a minimum of 6 in. …
- Excavate the second step up making sure to accommodate for the base material and buried block. …
- Place the base course of blocks on the base material and check for level.
- Fill the hollow cores and 12 in.
How many deadmans are needed for a retaining wall?
Install one dead man every 6 to 8 feet around the entire wall. Continue building up the retaining wall, using landscaping screws to secure each timber.
WHY DO Retaining walls fail?
The reasons for these types of failures are lack of proper reinforcement, improper drainage behind the wall (lack of weep holes or clogged holes), foundation footing problems, settlement or expansion of the soil, overloading of the wall, construction errors, and/or other design errors.
What is the strongest type of retaining wall?
Concrete and Masonry Retaining Walls
Poured concrete is the strongest and most durable choice for retaining walls. It may also be carved and formed to look like mortared stone depending on your taste.