BUSHFIRE HAZARD ASSESSMENT AND MANAGEMENT PLAN v2 - Coveys Road TINBEERWAH (1)

Bushfire Hazard Assessment and Management Plan v2                                                       NCES REF: J000545
Lot 2, 4 & 5 on RP172460 & Lot 7 on RP895754
66, 82 & 98 Coveys Rd & 39 Tinbeerwah Rd, Tinbeerwah


                                           Table 3 - Risk Assessment - Lot 8
         Direction                     North             South/west             East               North/west

         Approx. minimum
         distance to
                                       130m                110m                  75m                  80m
         hazardous
         vegetation

         VHC’s                          8.1                  8.1                 8.1                   8.1




         Smoke*                  Not assessed          Not assessed       Not assessed         Not assessed

         Ember                   Acceptable            Acceptable         Intolerable          Intolerable

         Radiant Heat            Acceptable            Acceptable         Intolerable          Intolerable

         Flame                   Acceptable            Acceptable         Tolerable            Acceptable


                                           Table 4 - Risk Assessment - Lot 9
         Direction                     North             South/west              East                 West

         Approx. minimum
         distance to
                                        65m                >150m                 80m                   75m
         hazardous
         vegetation

         VHC’s                           8.1                N/A                   8.1                   8.1

         Attack Mechanism

         Smoke*                   Not assessed         Not assessed       Not assessed          Not assessed

         Ember                    Intolerable          Acceptable         Intolerable           Intolerable

         Radiant Heat             Intolerable          Acceptable         Intolerable           Intolerable

         Flame                    Acceptable           Acceptable         Acceptable            Acceptable


* Risk of smoke impact has not been assessed. Smoke can travel long distances and exhibit a variety of densities and
composition. It is therefore not readily practicable to determine the separation distances needed to attain the various risk
classes. Furthermore, individuals will react differently to smoke impacts whereas individuals will generally exhibit similar
reactions to direct flame and radiant heat.

All identified ‘Intolerable risk’ assigned to the new buildings is expected to be reduced to at least a
‘Tolerable risk’ where buildings are constructed in accordance with the National Construction Code
2019 (NCC 2019) AS3959:2018 Construction of Buildings in Bushfire Prone Areas requirements.

5.3      Qualitative Risk Discussion
Expansive units of flammable vegetation are located in proximity to the site which have the potential
of facilitating either a direct bushfire front onto the site and/or facilitating advance ember attack and
radiant heat impact to the site. A discussion of the directional risk acting on the buildings associated
with Lots 8, 9 and 12 follows.

5.3.1 North
The VHC 8.1 tall open forest to the north of the proposed building envelopes exposes them to varying
risk of direct flame, radiant heat, ember and spotting impact in the absence of additional mitigation
measures being employed. The degree of separation offered to the VHC 8.1 hazard is the primary
driver of the assigned level of risk and was determined with consideration to the Flamesol modelling
output presented in Section 4.


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