Sub-Base Materials

Quality Statement

Hunter Quarries provides high-quality sub-base materials, including DGS20, designed to meet TfNSW and ARRB specifications for superior structural integrity.

A well-compacted sub-base is essential for the structural integrity of roads and other infrastructure projects. Hunter Quarries offers a range of sub-base materials that comply with RMS 3051 and ARRB standards, ensuring optimal compaction and performance.

We supply the following sub-base materials:

  • DGS20 (Densely Graded Sub-base 20mm): Meets TfNSW specifications for smaller-scale infrastructure.
  • Council Mix (Non-specified): Flexible material for council-specific projects.
  • 20 or 40 Scalps: Economical fill options for various sub-base applications.
Download our Guide to Road Base
Our Products
Frequently Asked Questions FAQ

Frequently Asked Questions

  1. What is the purpose of a sub-base in road construction?
    The sub-base provides essential load-bearing support for the layers above, distributing weight and preventing differential settlement.
  2. How does DGS40 differ from DGS20?
    DGS40 is a larger, more robust sub-base material, offering enhanced load-bearing capacity for larger projects.

Our Projects

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M1 Extension

Process Audit for M1 Extension

Hunter Quarries recently passed a process audit for the M1 Pacific Motorway Extension project with zero non-conformances. The audit covered our quality practices, including stockpile management, material sampling, testing, and traceability, ensuring compliance with Transport for NSW specifications.

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Contact our specialised team for more information about our products and how we can meet your specifications.

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