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.
What is the cheapest material to build a retaining wall?
What is the cheapest retaining wall material?
- Treated pine and is the least expensive material. …
- Hardwood is more expensive than treated pine. …
- Railway sleepers are another – slightly more expensive – option and are built to withstand ground and water contact.
- Concrete sleepers are more expensive.
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.
How high can you build a retaining wall?
They lean back toward the soil with interlocking edges and use their mass to resist pressure from behind. Gravity walls can be small (under 4-feet high) or go upwards to ten feet without reinforcement. Municipalities usually require a building permit for walls taller than 4 feet.
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.
How do you build a stone retaining wall?
- Organize the Stones. Organize the wall stones roughly by size and shape, making different piles as needed. …
- Set Up a Level Line. …
- Excavate the Area. …
- Add Landscape Fabric. …
- Build the Wall Base. …
- Lay the First Course. …
- Lay the Second Course. …
- Begin Back-Filling the Wall.
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 can I use instead of a retaining wall?
An alternative to retaining walls are typically metal mesh gabion baskets filled with stones. These present different options for introducing creative elements to your garden and landscaping. Garden walls with stone embankment – plantable. This is a great combination of design and functionality.