Item 14 Appendix G - Bushfire Hazard Assessment-1.0 · MCU22/0094

                                                                               BHA Report forLot 4 Noosa Civic, Hoffman Drive, Noosaville




Potential Radiant Heat Flux

The Australian Standard, Construction of Buildings in Bushfire Prone Areas (AS 3959-2018), provides a suitable methodology
for identifying assessable vegetation and determining the requirements for the construction of buildings in order to improve
their resistance to bushfire attack from burning embers, radiant heat, flame contact and a combination of the three attack forms.

Calculations using AS 3959-2018, in accordance with Appendix B - Detailed Method for Determining the Bushfire Attack
Level (BAL) – Method 2 (Normative), determine the fireline intensity generated by the identified vegetation type. The
calculations indicate the relative Heat Flux Exposure as a function of distance of a building from the vegetation. At a
separation of 40 metres the buildings on the proposed site will be exposed to a radiant heat flux of 9.73 kW/M2 equating to a
Bushfire Attack Level (BAL) of 12.5 k/Wm2 (Appendix 1).



Bushfire Protection Measures in Combination

Figure 13 illustrates that effective protection against bushfire can only be achieved by the integration of multiple measures.
Removing the bushland (hazard) will remove the risk but this option is neither necessarily possible nor desirable. An
acceptable level of protection of life and property can be achieved while still retaining and protecting biodiversity and the
natural values of the bushland.




                                                          Figure 13


+ Bushfire assessments
+ Property vegetation assessments
+ Site planning for bushfire
+ Property management for bushfire                                                 Bushfire Planning Specalists - qldbushfireplanning.com.au
+ Bushfire management plans