Attachment C Current Development Approval.pdf

                                                                                                     BHA Report for17-19 Hofmann Drive, Noosaville




       Direct Flame Contact

       Direct flame attack refers to flame contact from the main fire front, the flame that engulfs burning vegetation is the same flame
       that contacts the building. It is estimated that only 10 to 20 per cent of buildings lost to bushfire occur as a direct result of flame
       attack.


       Ember and Firebrand Attack

       CSIRO research has shown that ember attack is the cause of up to 80% of house loss in Australia. The convective forces of
       bushfire raise burning embers into the atmosphere on prevailing winds and deposit them to the ground ahead of the fire front.
       Typically, ember attack occurs approximately 30 minutes prior to the arrival of the fire front and continues during the impact of
       the fire front and for several hours afterwards. Building loss via ember attack relates largely to the vulnerabilities and
       peculiarities of each building, its distance from the classifiable vegetation and whether someone is present to actively defend
       the building.


       Radiant Heat

       Measured in kilowatts per m2, radiant heat is the heat energy released from the fire front which radiates to the surrounding
       environment, deteriorating rapidly over distance. In terms of impacts on buildings, radiant heat can pre-heat materials making
       them more susceptible to ignition. Radiant heat can also damage building materials such as window glazing, allowing openings
       into a building through which embers may enter.


       Fire Driven Wind

       The convective forces of a bushfire typically result in strong fire-driven winds, which can lead to building damage. The typical
       effects of fire driven wind include conveyance of embers, damage from branches and debris hitting the building, as well as
       direct damage to vulnerable building components, such as lifting roofs and the breakage of windows.




       + 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: 2,
         1, Version Date: 21/06/2022
                           20/06/2022