Quick Answer: How To Install A Retaining Wall With Pavers?

What do you put under retaining wall blocks?

Backfill the wall with gravel or sand. If you use sand, first cover the backside of the retaining wall with landscape fabric. This will keep the sand from seeping between the blocks. If you‘re backfilling with gravel, you can pour the gravel after every course you lay.

How do you prepare the ground for a retaining wall block?

fill concrete cores with crushed gravel



Sweep away all debris from the top of the first course of block with a broom. Stack the second course of blocks on top of the first course making sure they remain level. Fill the concrete cores with crushed gravel. Backfill with gravel behind the wall to cover the drainage pipe.

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.

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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.

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.)

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.

How deep do footings need to be for a retaining wall?

Footing dimensions

Type of wall Wall height Depth of concrete
Single-skin Up to 1m 300mm
Double-skin Up to 1m 150mm
Double-skin Over 1m, up to 2m 375-450mm
Retaining wall Up to 1m 150mm300mm

Do you need landscape fabric behind retaining wall?

Whether the wall is made from stones, bricks or wood, it is important to provide a barrier between the building blocks and the soil. Landscape fabric is thin and sturdy and is a simple way to preserve a retaining wall’s construction.

How high can you build a retaining wall without a permit?

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).

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What slope requires a retaining wall?

What is the slope? If the slope is greater than a 3:1, consult with an engineer. If the slope is over 2:1, it will require structures or special stabilization techniques.

How long do retaining walls last?

How long will my retaining wall last? For a permanent wall structure, the general lifespan is generally between 50 and 100 years. This does, however, depend on the conditions of the soil and groundwater at your site.

What type of retaining wall is best?

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 do you make a strong retaining wall?

Here are three key principles in building any solid retaining wall:

  1. Bury the bottom course, or courses, of the retaining wall one tenth the height of the wall to prevent the soil behind from pushing the bottom out.
  2. Step back the blocks, rocks or timbers to get gravity working in your favor.

How much does it cost to do retaining wall?

In Victoria, you need to shell out around $190/m2 to have a retaining wall built on your property. On the other hand, the average retaining wall price in New South Wales is $150/m2. Building a retaining wall in Western Australia costs approximately $70/m2, which is the lowest average rate across Australia.

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