FAQ: How To Build A Concrete Retaining Wall On A Slope?

Can you build a retaining wall on a slope?

When retaining walls are built, they slope slightly to one side in order to improve drainage. If the location where you‘re building the wall has an uneven slope, you‘ll need to smooth out the slope before you build the wall. Tamp the soil to compact it and provide a firmer base for the retaining wall.

How do you build a hill retaining wall?

Shovel at least a 4-inch layer of gravel onto the landscape fabric. Grade this layer so it slopes 1 inch for every 4 feet, allowing water to drain away. Then lay in 4-inch perforated PVC drainpipe at the base of the wall and cover it with gravel. Shovel in backfill as you build the wall, one tier at a time.

How do you build a concrete sleeper retaining wall on a slope?

How To Build A Concrete Sleeper Retaining Wall

  1. Laying out. The area you are planning for landscaping or building the retaining wall with cement sleepers has to be on one level.
  2. Base Preparation. Excavate the area with the help of a mini loader with a 300mm auger.
  3. Place posts and fill concrete.
  4. Install sleepers and backfill.
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How do you build a retaining wall on uneven ground?

How to Build a Retaining Wall on Uneven Ground

  1. Step 1: Install Stakes and Attach String.
  2. Step 2: Level the String.
  3. Step 3: Dig Retaining Wall Trench.
  4. Step 4: Tamp Soil and Add Gravel.
  5. Step 5: Add Sand and Wall Blocks.
  6. Step 6: Add Second Row of Blocks.
  7. Step 7: Pour Gravel and Spread Fabric.

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 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 6 foot retaining wall cost?

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.

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.

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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

What is the best 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.

How much is a concrete sleeper retaining wall?

$300 to $450 per sq/m for treated timber sleepers/hardwood. $300 to $550 per sq/m for sandstone blocks. $400 to $680 per sq/m for reinforced concrete blocks. $550 to $700 per sq/m for concrete Besser blocks.

Does a retaining wall need a footing?

Foundation. A buried structural footing is usually required for larger retaining walls. To create this, a landscaper pours concrete below frost level (the depth to which the ground will freeze during the winter). Footings poured too shallow are prone to shifting and moving if moisture in the soil freezes and heaves.

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).

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.

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