Geotechnical, Structural & Civil engineering — Brisbane & Queensland
Landfill & Lined Basin Guide
Landfills, ponds and basins must hold waste or water without leaking and stay stable over time. This guide explains liner systems, slope stability and construction quality control.
Start here
A small defect in a liner or an unstable slope can cause major environmental damage.
We design liner systems with geosynthetics and compacted clay, check stability of slopes and liner interfaces, and support construction with inspection and testing.
Comparison
An overview only. Every entry below is described cautiously and is not an engineering limit; suitability is always confirmed against site-specific data.
| Design elements | Best suited to | Key consideration |
|---|---|---|
| Liner systems | Landfill cells, ponds and lined basins. | Material selection, thickness and protection layers. |
| Leachate & drainage | Landfills and contaminated sites. | Flow capacity and filter compatibility. |
| Slope & interface stability | Steep landfill and basin sides. | Limit equilibrium and numerical analysis. |
| Capping & closure | Landfill closure and rehabilitation. | Cover layers, drainage and vegetation. |
Design elements
Designed to EPA guidelines and project requirements.
Design element 01
Geomembrane, geosynthetic clay and compacted clay liners.
Landfill cells, ponds and lined basins.
Material selection, thickness and protection layers.
Installation quality decides performance.
Design element 02
Leachate collection and subsoil drainage layers.
Landfills and contaminated sites.
Flow capacity and filter compatibility.
Needs maintenance access.
Design element 03
Stability of cell slopes and liner interfaces.
Steep landfill and basin sides.
Limit equilibrium and numerical analysis.
Interface strength should be tested.
Design element 04
Final cover systems for completed cells.
Landfill closure and rehabilitation.
Cover layers, drainage and vegetation.
Settlement of waste must be allowed for.
Selection considerations
These factors tend to narrow the options faster than any single test result. Every recommendation remains site-specific and subject to the available data.
Method
Scope is adjusted to the project, the risk and the information already available.