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 best material to use for a retaining wall?
Retaining Wall Materials Comparison ChartTYPE OF MATERIALPROSPoured ConcreteStronger than a block wall Variety of design optionsBrickStrong and durableWoodAccessible materials Fairly simple installationDry Stone/BoulderThe most natural solution to grade change
What is the easiest retaining wall to build?
While retaining walls of this type are relatively inexpensive, they can be difficult to repair or remove. 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.
What should you put behind a retaining wall?
In order to provide proper drainage, at least 12 inches of granular backfill (gravel or a similar aggregate) should be installed directly behind the wall. Compacted native soil can be used to backfill the rest of the space behind the wall.
What is the strongest type of 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.
What slope requires a retaining wall?
A few things to keep in mind are: 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.
Should I use landscape fabric behind retaining wall?
A barrier behind the wall, lined in fabric and filled with gravel, creates an area for water collection and movement. The fabric helps keep the voids in the gravel from packing with silt. Leave room above the gravel backfill for topsoil or bedding soil.
How deep should a footing be for a retaining wall?
The general rule of thumb is to bury about one-eighth of the height of the wall. For example, if your wall will be three feet (36 inches) tall, the first course of blocks should start five inches below soil level. The gravel base should start three inches below this.
When should you build a retaining wall?
You Might Need a Retaining Wall If…
- You need a way to control downhill erosion. If mountains of erosion materials are clogging important areas on your property, adding a retaining wall is a wonderful idea. …
- Your home is downhill from soil fault lines. …
- Your foundation is threatened by a sliding hill.
How tall can you build a retaining wall?
Gravity walls can be small (under 4-feet high) or go upwards to ten feet without reinforcement. Municipalities usually require a building permit for walls taller than 4 feet.
Do I need drainage behind short retaining wall?
For proper drainage, the first 12 inches of space behind a retaining wall should be filled with crushed stone or gravel. This is so that when water gets into the space, it does not become bogged down in soil but instead can flow down the wall to the drains or weep holes.
Should you put plastic behind a retaining wall?
I always run the thicker black plastic behind retaining walls. Preserves the timber sleepers a bit more and stops dirt and weeds coming through the inevitable gaps. +1 for geotex on the ground and up the soil you want to retain, then aggregate between fabric and wall, with drain at the bottom. No plastic for me.