Appendix D - Bushfire Assessment · RAL26/0026

                                      Calculated August 20, 2026, 9:45 am (MDc v.4.9)

                                                  SUB UNIT 3 - VHC 39.2

                                  Minimum Distance Calculator - AS3959-2018 (Method 2)

                   Inputs                                                     Outputs

 Fire Danger Index          48              Rate of spread                     0.35 km/h

 Vegetation
                            Woodland        Flame length                       3.26 m
 Classification

 Understorey fuel load      5 t/ha          Flame angle                        57 °, 68 °, 76 °, 82 °, 84 ° & 90 °

                                                                               1.22 m, 1.31 m, 1.28 m, 1.16 m, 1.06 m &
 Total fuel load            8 t/ha          Elevation of receiver
                                                                               0m

 Vegetation height          n/a             Fire intensity                     1,464 kW/m

 Effective slope            3°              Transmissivity                     0.896, 0.89, 0.882, 0.87, 0.862 & 0.792

                                                                               0.5686, 0.421, 0.2823, 0.1877, 0.1523 &
 Site slope                 3°              Viewfactor
                                                                               0.0413

                                            Minimum distance to < 40
 Flame width                100 m                                              2.8 m
                                            kW/m²

                                            Minimum distance to < 29
 Windspeed                  n/a                                                3.8 m
                                            kW/m²

                                            Minimum distance to < 19
 Heat of combustion         18,600 kJ/kg                                       5.6 m
                                            kW/m²

                                            Minimum distance to < 12.5
 Flame temperature          1,090 K                                            8.5 m
                                            kW/m²




AUGUST 2026                       BUSHFIRE HAZARD ASSESSMENT & MANAGEMENT PLAN                                       Page: 36
                                          380 MCKINNON DRIVE, COOROIBAH