Appendix I - Bushfire Hazard Assessment · MCU21/0146

                                                                                            BHA Report for17-19 Hofmann Drive, Noosaville




APPENDIX 1


POTENTIAL BUSHFIRE ATTACK LEVEL

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.



Method for Determination of BAL

The BAL was determined in accordance with Appendix B of AS 3959-2018, Detailed Method for Determining the Bushfire
Attack Level (BAL) – Method 2 (Normative):
Step 1: Determine the relevant FDI.
Step 2: Determine the vegetation classification, fuel loads.
Step 3: Determine the effective slope in degrees under the classified vegetation.
Step 4: Determine the slope in degrees of the land between the site and the classified vegetation.
Step 5: Determine the distance of the site from classified vegetation.
Step 6: Calculations.



Determination of BAL

Step 1. Relevant Fire Danger Index
The PSBA bushfire hazard mapping identifies the FFDI as 48.
Step 2. Vegetation Classification - Fuel Loads
The vegetation type was classified as Melaleuca open forests on seasonally inundated lowland coastal swamp. Available fuel
weights were derived from PSBA State – Wide Bushfire Hazard (Bushfire Prone Area) Mapping. Fuel weight was determined
as: 28.4 tonne/hectare. Fuel weights were determined as:
    •    15.4 tonne/hectare surface fuels
    •    8.0 tonne/hectare near surface fuels
    •    3.0 tonne/hectare elevated fuels
    •    2.0 tonne/hectare bark fuels
    •    Total fuel weight = 28.4 tonne/hectare.



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