Fill material / Inert fill

Back Fill / Sub Soil: Ground Stability Solutions

Back Fill, also referred to as Sub Soil, plays a vital role in construction and landscaping projects. This material is composed of broken down rocks, clay, and sand, and it contains no organic matter. The absence of organic content ensures that Back Fill remains stable, making it an excellent choice for various filling applications where shifting and settling are concerns.

Practical Projects with Fill / Subsoil

Construction and Landscaping Applications

Back Fill is widely used in numerous projects due to its stability. It serves as bulk fill for raising ground levels and filling depressions. Its composition makes it suitable for backfilling behind retaining walls and large landscape structures. Additionally, it is used in creating embankments, berms, and landscape mounds.

• Bulk fill for raising ground levels or filling depressions
• Backfill behind retaining walls or large landscape structures
• Formation of embankments, berms, or landscape mounds
• Core material for large earthworks or bund construction
• Support fill beneath driveways or patios (beneath sub-base layer)
• Ground stabilisation when compacted and layered

Installing Back Fill: Key Considerations

Proper preparation and installation of Back Fill are crucial for achieving ground stability. Compaction and layering are essential steps to ensure that the material provides the necessary support, especially for underfill beneath sports pitches or landscaped open spaces. Despite its benefits, it's important to note that Back Fill is not suitable for planting. To support plant growth, it should be covered with topsoil or compost.

Site Levelling and Structural Foundations

In large-scale site levelling and regrading projects, Back Fill is highly regarded for its structural support. It offers a stable foundation for non-structural trenches or utility runs and serves as a preparation layer for topsoil spreading in garden and commercial landscaping. It is also used in forming foundations for rural or agricultural tracks, providing stability and support over time.

Evaluating Back Fill / Sub Soil for Your Project

Back Fill is non-decorative and low in organic content, making it unsuitable for top layers or planting. For healthy plant growth, cover it with topsoil or compost. Its primary function is to provide a stable base for various construction and landscaping applications, ensuring reliable ground support.