When it comes to construction, not every project requires intensive geotechnical supervision. For smaller-scale, non-structural works, Level 2 Compaction provides an efficient, compliant, and cost-effective solution. Whether you’re backfilling trenches, preparing landscaping zones, or laying driveway subgrades, Ideal Geotech delivers reliable Level 2 Compaction Testing across NSW and ACT — so you can move forward with confidence and compliance.
1. What Is Level 2 Compaction?
Level 2 Compaction is a geotechnical testing process used to assess the density and suitability of compacted fill, without the need for continuous on-site supervision. It aligns with the intent of AS3798 standards, specifically for low-risk, shallow, or non-structural applications.
Key characteristics of Level 2 Compaction:
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Conducted after compaction activities are complete
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No supervision of fill placement
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Involves spot field density testing using a nuclear gauge or sand cone method
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Applied to thin fill layers (<600mm) or non-structural areas
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Verified by a qualified geotechnical professional
2. Where Is Level 2 Compaction Commonly Used?
Level 2 Compaction is ideal for non-structural, low-risk areas where engineered supervision is not required. Typical applications include:
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Fill pads less than 600mm thick
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Backfill around swimming pools, utility pipes, or footings
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Landscaping works, verge regrades, and garden areas
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Driveway subgrades and access tracks
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Residential cut-and-fill sites without structural loads on fill
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Service trench reinstatement for water, gas, or electrical infrastructure
While less intensive than Level 1 supervision, Level 2 Compaction still offers critical assurance that your site preparation meets expected performance standards — and council compliance.
3. When Should You Choose Level 2 Instead of Level 1 Compaction?
Level 2 Compaction Testing is appropriate when:
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Fill depth is under 600mm
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All structural elements are supported on natural ground, not fill
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A certifier or engineer confirms that testing-only is sufficient
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You are certifying trench backfill or landscaping fill
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The project carries minimal geotechnical risk
✅ Tip: Always confirm suitability with your structural engineer or building certifier before opting for Level 2.
4. What’s Included in Our Level 2 Compaction Testing Service?
At Ideal Geotech, our Level 2 Compaction service provides end-to-end verification for fill performance:
✅ On-site inspection of the completed fill area
✅ Field density testing using a nuclear gauge or sand cone method
✅ Evaluation of compaction against:
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Required density standard (typically 95% Standard or Modified MDD)
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Acceptable moisture content range
✅ Detailed summary report including:
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Test locations and results
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Soil type and condition descriptions
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Pass/fail status of each test
✅ Signed certification by a qualified geotechnical professional
Our reports are clear, council-ready, and designed to minimise back-and-forth with certifiers.
5. Why Level 2 Compaction Still Matters
Even if a fill area isn’t supporting structures, poor compaction can lead to serious issues:
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Surface subsidence or unexpected settlement
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Cracked pavements or moving pavers
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Displacement of pipes or conduits in trenches
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Poor landscaping performance
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Delays or rejections from council or certifiers
With Ideal Geotech’s Level 2 Compaction Testing, you avoid future rework by proving — with evidence — that your ground is fit for purpose.
6. Why Builders and Certifiers Choose Ideal Geotech
We’re trusted across the ACT and NSW construction industries for our responsiveness, accuracy, and clarity. Here’s why clients choose us:
✅ Fast turnarounds on testing and reporting
✅ Certified technicians using nuclear and sand cone methods
✅ No-jargon, practical reporting for real-world use
✅ Access to qualified engineers for advice and support
✅ Flexible service for trench work, driveways, verge fills, and more
From suburban garden walls to utility trenches and access tracks, we keep your project moving — without overspecifying or overcharging.
Book Your Level 2 Compaction Test Today
Don’t leave your site’s ground performance to guesswork. Level 2 Compaction Testing gives you assurance without the overhead of full supervision.
