Retaining walls are engineered structures designed to resist the lateral pressure of soil. In most local councils, building approval is required for retaining walls that exceed 1 m in height, are within 1.5 m of any structure or services, or are subjected to unusual surcharge loads (e.g., stepped retaining walls). For such approvals, structural engineer’s drawings and a Form 15 are typically required. At SNG Engineers, we provide comprehensive structural design and documentation to facilitate retaining wall approvals and construction.
Retaining Wall Design Services Offered by SNG Engineers
Timber Sleeper Retaining Walls
Timber sleeper retaining walls comprise timber posts embedded into concrete footings at specified depths and spacing, with timber rails or sleepers attached to the posts. This type of wall is commonly used in Queensland due to its cost-effectiveness and speed of construction. However, timber walls are less durable and may not provide long-term serviceability.
Concrete Sleeper Retaining Walls
Concrete sleeper retaining walls consist of steel ‘H’ posts embedded into concrete footings at designated depths and spacing, with precast concrete sleepers connected to the posts. These walls are widely used in Queensland for their durability, efficiency, and cost-effectiveness.
Masonry Reinforced Concrete Retaining Walls
Masonry reinforced concrete retaining walls are constructed from precast concrete hollow blocks with vertical and horizontal steel reinforcement, tied to a concrete footing to prevent sliding and overturning. These walls are commonly employed in residential and commercial developments and are particularly suitable for basement walls.
Other Retaining Wall Types
- Link Block Retaining Wall
- Gabion Retaining Wall
- Mass Concrete Retaining Wall
- Reinforced Concrete Retaining Wall
- PVC Formwork Retaining Wall
Contact us today for a competitive free quote for your next project.