Often asked: How To Build A Wood Retaining Wall On A Slope?

How much does it cost to build a retaining wall on a slope?

The average cost of building a retaining wall is $5,636. Most homeowners find themselves spending between $3,229 and $8,670. The cost of retaining wall materials ranges from $3 to $40 per square foot. Wall block prices fall between $10 and $15 per square foot, while precase, poured concrete runs $20 to $25.

How do you build a wood retaining wall?

  1. Materials. (4) two-by-six pressure-treated lumber boards, each 8 feet long.
  2. Plan the Retaining Wall. Stake out the area where you plan to build the wall.
  3. Prepare the Retaining Wall Area.
  4. Mark the Other Post Locations.
  5. Dig the Post Holes.
  6. Add the Gravel to the Holes.
  7. Set the Posts.
  8. Pour the Concrete.

What is the easiest retaining wall to build?

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. (For a curved wall, mark instead with a garden hose or spray paint.)

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What is the cheapest type of 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.

How much does a 4 foot retaining wall cost?

Retaining Wall Cost per Square Foot

Size Average cost
25 x 3-feet (75 sq.ft.) $3,750
25 x 4feet (100 sq.ft.) $5,000
40 x 4feet (160 sq.ft.) $8,000
60 x 4feet (240 sq.ft.) $12,000

Do I need a concrete footing for a retaining wall?

No, you do not need a concrete footing, it will actually adhere the wall from being able to naturally shift. It is best to use a coarse stone aggregate for the Retaining Wall footing.

How long will a railroad tie retaining wall last?

Cons: Limited life span (10 to 20 years) because timbers rot and are damaged by pests. Cannot be used to create curving walls as can concrete and stone.

How long do wooden retaining walls last?

A timber retaining wall can last a little over a decade, if treated properly. If not maintained, the lifespan of a timber wall is around 3 to 5 years. To keep its fresh look, timber requires serious maintenance. The material will hold up for so many years only if its pressure-treated with chemicals.

How much does a wood retaining wall cost?

The average cost to install a timber retaining wall is about $10 per square foot or $1000 for DIY installation of a 20′ long x 5′ high wall (100 sf). If hiring a Pro, the same retaining wall cost is about $2,800 or $28 per square foot.

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How tall can a wood retaining wall be?

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.

How do you make a dead man anchor?

To construct a deadman anchor from a log, do the following:

  1. Dig a trench.
  2. Tie a webbing loop around the log long enough to stick up out of the dirt.
  3. Place the log in the trench and bury it.
  4. Make sure to compact the soil as much as possible.
  5. Run your rappelling rope through a rappel ring or rapide on the webbing loop.

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. Cover the ground in front of the retaining wall with 2 to 4 inches of bark mulch.

What is a Deadman on a retaining wall?

Railroad tie retaining wall



Some of the ties are buried back into the dirt pile, called deadmen. My husband built a retaining wall from railroad ties.

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