SUPERSEDED Approved Plans & Bushfire Hazard Assessment Feb 2022 - MCU21-0146 · MCU21/0146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
Document Set ID: 21969697
       + Bushfire management plans
Version: 1, Version Date: 20/06/2022