Determine the Bushfire Attack Level per AS 3959:2018 from vegetation, distance and slope - using your state’s Fire Danger Index.
Select the classified vegetation, the separation distance and the effective slope, and the BAL Calculator applies AS 3959:2018 with the correct Fire Danger Index for your state to determine the Bushfire Attack Level - from BAL-LOW through to BAL-FZ (Flame Zone).
It returns the slope- and FDI-adjusted setback table for every BAL band and the construction requirements that apply at the determined level, so you can see what the rating means for the build.
The BAL Calculator tool is a professional aid. Verify all outputs against the current National Construction Code and the relevant Australian Standards, and have them certified by a suitably qualified practitioner before use.
Assess NCC 2025 Section J energy efficiency by climate zone - fabric, glazing, HVAC, mandatory solar PV and EV provisioning.
Look up tested fire-rated construction systems that meet or exceed a required FRL.
Determine every required fire system for any building - each with its NCC clause and a rough order-of-magnitude cost estimate.
The BAL Calculator tool is built around AS 3959:2018, with the relevant clauses cited on every output. Always verify results against the current National Construction Code and Australian Standards.
Yes - the BAL Calculator tool is one of the nine tools in the Fire & Building Compliance Suite, included in every plan of the Fire & Building Compliance Suite - from $49/month billed annually, with a 14-day free trial.
All 9 tools, one subscription. Start a 14-day free trial - no credit card required.
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