Bulk earthworks form the foundation of every successful subdivision. Without proper supervision and testing, even well-designed developments can experience settlement, pavement failure, drainage issues, or costly remediation works.
Level 1 supervision, as defined by AS 3798 — Guidelines on Earthworks for Commercial and Residential Developments, provides independent verification that fill placement and compaction meet project specifications and performance requirements.
During Level 1 supervision, qualified geotechnical personnel monitor all stages of earthworks, including stripping, proof rolling, placement of engineered fill, moisture conditioning, and compaction. Field density testing confirms that each layer achieves the required compaction levels before additional material is placed.
For developers and civil contractors, this process reduces risk and provides documented assurance that the ground will perform as intended. Councils and certifiers often require Level 1 certification before approving subsequent construction stages.
Common benefits include:
• Reduced risk of differential settlement
• Improved long-term pavement performance
• Compliance with development approvals
• Protection against costly defects claims
• Faster project approvals and handover
In large residential projects across NSW, Level 1 supervision is not just a regulatory requirement — it is a critical quality control measure that protects both the developer and future property owners.
Engaging an experienced geotechnical testing provider ensures that earthworks are completed efficiently while maintaining strict compliance with Australian Standards.
