Nuclear gauge testing manual

The Nuclear Gauge Testing Manual (NGTM) provides procedures and instructions for the safe use and operation of nuclear gauges to measure the compacted density of soils, crushed rocks, concrete and asphalt materials.

Additionally, the determination of material biases (moisture content and wet density) is detailed for Troxler, InstroTek, Humboldt and Campbell-Pacific Nuclear (CPN) gauges.

Edition 3, Amendment 8, August 2022

• Nuclear Gauge Testing Manual (PDF, 5.24 MB) Edition 3, Amendment 8, August 2022
• Measurement Uncertainty register (PDF, 85 KB)

Updates, withdrawals, new test methods or operational checks are recorded in the amendment register (PDF, 225 KB).

Superseded versions of the manual are available on the Nuclear Gauge Testing Manual - Superseded page.

Notifications

Want to be notified when the Nuclear Gauge Testing Manual is updated? You can now subscribe to receive email alerts when we make changes to it. If you have a subscription and no longer wish to receive emails, you can also unsubscribe.

Was this page useful?

Yes No

indicates required fields

What is your feedback about?

• Department of Transport and Main Roads website
• a Transport and Main Roads service?

Page feedback

Confirm your selection, is this page useful?

• Yes
• No

Help us improve the content on our website or tell us what is working well. Contact us if you need a response.

Feedback about this page:

Contact (optional)

your privacy

Please provide your phone number or email address if you are happy for us to contact you with any follow-up questions.

Reference number:

---

Provide feedback on a Department of Transport and Main Roads service

Please use our complaints and compliments online form to provide feedback about a service.