Often asked: How To Build A Poured Concrete Retaining Wall?

How thick does a concrete retaining wall need to be?

Rules of thumb commonly used by designers to establish the geometry of the wall include (refer to diagram): Base width = 1/2 to 1/3 of the height of the wall. Base thickness = 1/8 of the height of the wall but not less than 12 inches. Stem thickness = 6 inches + ¼ inch for each foot of wall height.

Are poured concrete walls better than block?

Poured concrete wall foundations are arguably stronger than cinder blocks. Poured walls have a better lateral strength, which means they are able to resist more pressure from the water and the soil from the outside. Poured walls tend to be the preferred choice of new construction builders.

How much is a poured concrete retaining wall?

The total cost to have a concrete retaining wall installed will be a combination of material and labor prices. For a basic wall you can expect to pay between $30 and $60 per square foot.

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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.

Do retaining walls need rebar?

A retaining wall must provide a way to release the water that builds up in the slope behind it. Retaining walls must be stronger than freestanding walls. Insert rebar in the footing when you pour it; this should be done at every three blocks or at intervals specified by your local codes.

Are poured concrete walls expensive?

Poured Concrete Walls Cost



A poured concrete wall averages $6,396 for homeowners around the country, with most people paying between $2,861 and $10,723. You might pay anywhere from $932 to $25,000 depending on the size, materials, design and overall labor.

Should block wall be filled with concrete?

The concrete blocks that are used to build block foundations are hollow. After the concrete blocks are laid, the voids can be filled with a cement-based mortar or poured concrete that contains small pea gravel.



Do you need to fill cinder blocks with concrete?

Block Wall Thickness Blocks Filled per Cubic Yard Concrete/Grout per 100 Block
12″ 65 1.54 yd3

Is poured concrete cheaper than block?

Poured concrete foundations cost more than CMU block foundations. Contractors may find it difficult, time-consuming, and costly to truck in wet concrete to the job site. Poured concrete can crack and leak if not prepared correctly.

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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

Are concrete walls cheaper than brick?

Cost: Brickwork is certainly cheaper than the normal concrete. A cubic meter of brick work in CM (1:6 )consumes about 2 bags of cement, 0.15 Brass of sand and 500 bricks. the concrete [ M 20 ] on the other hand needs, 7.87 bags of cement, 0.15 brass of sand and 0.30 brass of aggregate.

Does a small 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 long do concrete retaining walls last?

Concrete is a popular material choice for a variety of hardscaping structures due to its cost-effectiveness and durability. A concrete retaining wall can be expected to last anywhere from 50 to 100 years.

How much rebar is needed for a retaining wall?

Rebar Placement in Walls



As a minimum, #4 rebar (1/2 inch) is spaced vertically at 36 inches on center, continued to within 8 inches of the top of the wall, placed on the tension side — the inside face — of the wall.

What is RCC retaining wall?

Types of reinforced concrete retaining walls are cantilever retaining walls and counterfort retaining walls. Retaining wall are generally used to retain earth or other material to maintain unequal levels on two faces. The material on the back face is called backfill.

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