- Retaining wall home
- Four common types of concrete retaining walls
- How to Design Concrete Retaining Walls
- General retaining wall design
- Building codes for retaining walls
- How to determine lateral earth pressure
- Determining concrete retaining wall proportions
- Provisions for joints in concrete walls
- Backfill drainage of retaining walls
- The importance of groundwork and compaction
- How to Install Concrete Retaining Walls
- Retaining Wall Cost
- Decorative Face Options for Retaining Walls
- Decorative poured walls: Reproduce the look of stone or masonry
- Vertical concrete overlays
- Form liners for cast-in-place vertical concrete
- Related Information:
- Landscape Retaining Walls: Information and design ideas for residential retaining walls from LandscapingNetwork.com
- Board Formed Concrete
Four Common Types of Rigid, Monolithic Concrete Retaining Walls
Cantilever Retaining Walls
Cantilever retaining walls are constructed of reinforced concrete. They consist of a relatively thin stem and a base slab. The base is also divided into two parts, the heel and toe. The heel is the part of the base under the backfill. The toe is the other part of the base.
- Use much less concrete than monolithic gravity walls, but require more design and careful construction.
- Generally economical up to about 25 ft. in height.
- Can be precast in a factory or formed on site.
Counterfort Retaining Walls
Counterfort retaining walls are similar to cantilever walls except they have thin vertical concrete webs at regular intervals along the backside of the wall. These webs are known as counterforts.
Counterfort retaining walls:
- The counterforts tie the slab and base together, and the purpose of them is to reduce the shear forces and bending moments imposed on the wall by the soil. A secondary effect is to increase the weight of the wall from the added concrete.
- Can be precast or formed on site.
- Counterfort retaining walls are more economical than cantilever walls for heights above 25 ft.
Gravity Poured Concrete Retaining Walls
- Gravity retaining walls depend on their own weight and any soil resting on the concrete in resisting lateral earth forces.
- They are generally economical up to 10 feet in height for cast concrete structures.
- Usually are sufficiently massive to be unreinforced.
- Monolithic cast walls are generally formed on site.
Semi-Gravity Retaining Walls
A specialized form of gravity walls is a semi-gravity retaining wall. These have some tension reinforcing steel included so as to minimize the thickness of the wall without requiring extensive reinforcement. They are a blend of the gravity wall and the cantilever wall designs.