FAQ: How To Build A Retaining Wall With 6×6 Timbers?

Can you use 6×6 for retaining wall?

Build the Foundation Row



Starting at one end of the trench, place a 6×6 on the ground. Make adjustments to keep the timbers level and straight (images 1 and 2). Use a small sledgehammer to shift things into place and check plumb with a level. Make sure the row is level across the entire length of the wall.

How long will a 6×6 retaining wall 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 tall can you build a timber 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.

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What is the cheapest retaining wall to build?

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.

Does a 2 foot retaining wall need drainage?

Although there are exceptions, most retaining walls require gravel backfill, soil compaction, pipe or toe drains, and weep holes. Together, these four features will provide adequate drainage for most designs. Only a few types of walls will not require all of them.

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.)

What is the best retaining wall block?

Timber and inter-locking-concrete-block walls are great DIY retaining wall ideas. Mortared masonry and poured concrete ones are usually best left to a mason.

How high can a retaining wall be without engineering?

How tall is your wall? Most municipalities require a building permit and a design from a Licensed Engineer if your wall is taller than 4 feet high (measured from the bottom of the first block to the top of the last block).

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.

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How do you keep landscape timbers from rotting?

Keeping the timber painted



You should stop wondering, how to prevent the wood from rotting in the ground because painting is the most effective strategy to opt for. You have to keep the wood coated with quality oils, protecting spray, paint, waxes and varnishes.

How deep do retaining wall posts need to be?

Holes for posts to 150 mm dia, should be 300 mm dia minimum. For posts above this size use 450 mm dia holes. In general try to choose posts less than 150 mm dia as they have holes 300 mm x ~ 1.6 m deep (1.5 m embedment and 0.1 m for post drainage).

How much does a timber retaining wall cost?

Timber retaining wall cost will also vary depending on the type of wood you use. Average prices for materials and labour are: $250 to $350 per square metre for treated timber (pine) $300 to $450 per square metre for treated timber sleepers (hardwood)

How high can I build a block retaining wall?

Your retaining wall will only be as strong its support system. For a stacked-block retaining wall that’s no higher than four feet, a trench filled with three inches of crushed rock will help keep the wall from shifting and settling.

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