Methods for fire tests on building materials, components and structures — Fire-resistance test
The test method behind FRL ratings (e.g. 60/60/60).
Overview
AS 1530.4 is the laboratory test that determines a building element's Fire Resistance Level (FRL). The three numbers (structural adequacy / integrity / insulation, in minutes) come from this test. Builders don't perform the test — they specify products that have been tested to it.
Key Requirements
- Furnace test under a standard time-temperature curve.
- Three measurements: structural adequacy, integrity, insulation.
- Result expressed as FRL like '60/60/60' or '-/60/30'.
- Tested by NATA-accredited laboratories.
How it's used in the NCC
Referenced wherever an FRL is required — party walls, garage-to-dwelling separation, sole-occupancy unit separation.
Practical Notes
- You'll see FRLs called up in NCC clauses — match the product's test report to the required FRL.
- Test reports are product-specific; substituting a 'similar' product without its own report is not compliant.
Where to obtain
The full text of AS 1530.4 is published by Standards Australia and must be purchased — typical price A$150–400 per part. Always work from the current edition referenced in the NCC, not an older one.