Appendix F - Bushfire Hazard Assessment and Managment Report

Bushfire Report


2.3     Bushfire Attack Level Assessment
The determination of the site-specific Bushfire Attack Level (BAL) for the
development footprint and classified vegetation was undertaken in accordance with
the Bushfire Resilient Communities – SPP Technical Reference Guide and AS
3959:2018. This includes the identification of the following input values:

    •   FFDI (5% AEP fire weather event)
    •   Vegetation hazard class, surface and overall fuel load
    •   Site slope, effective slope, and whether the effective slope is upslope or
        downslope of the development
    •   Distance of the development footprint from classified vegetation

Radiant heat exposure was calculated using the Bushfire Asset Protection Zone
calculator provided by the Sustainable Development Unit of Queensland Fire and
Emergency Services and/or the AS 3959:2018 Method 2 Calculator.

AS 3959:2018 defines the Bushfire Attack Level as a method for measuring the
severity of a building's potential exposure to ember attack, radiant heat, and direct
flame contact, using increments of radiant heat expressed in kilowatts per square
meter. This method serves as the basis for establishing construction requirements to
improve the protection of building elements from bushfire attack. Consequently, the
assessment results and accompanying BAL construction requirements only apply to
proposed buildings or structures, not the entire development area.




Max Bushfire Protection Consulting                                                   12