Sub-Base Materials

Quality Statement

Hunter Quarries provides high-quality sub-base materials, including DGS20 and DGS40, designed to meet RMS 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:

  • DGS40 (Densely Graded Sub-base 40mm): Ideal for larger projects requiring enhanced load-bearing capacity.
  • DGS20 (Densely Graded Sub-base 20mm): Meets RMS specifications for smaller-scale infrastructure.
  • NGB20 (20mm Nominal Gravel Sub-base): A natural gravel option for sub-base applications.
  • NGS40 (40mm Nominal Gravel Sub-base): Provides a natural, non-specified alternative for sub-base construction.
  • 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
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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.

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Coolfog System

Dust suppression is a key environmental consideration at Hunter Quarries as we continually seek a better work environment for our staff, and cleaner air for our neighbours.

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