Appendix D - Bushfire Assessment · RAL26/0026

                                         Calculated August 20, 2026, 9:40 am (MDc v.4.9)

                                                     SUB UNIT 2 - VHC 22.1

                                     Minimum Distance Calculator - AS3959-2018 (Method 2)

                   Inputs                                                       Outputs

 Fire Danger Index          48               Rate of spread                   1.34 km/h

 Vegetation
                            Forest           Flame length                     12.16 m
 Classification

 Understorey fuel
                            23.4 t/ha        Flame angle                      53 °, 63 °, 71 °, 76 °, 78 ° & 83 °
 load

                                                                              4.85 m, 5.42 m, 5.75 m, 5.9 m, 5.95 m & 6.03
 Total fuel load            28.4 t/ha        Elevation of receiver
                                                                              m

 Vegetation height          n/a              Fire intensity                   19,777 kW/m

                                                                              0.877, 0.86, 0.836, 0.8110000000000001,
 Effective slope            0°               Transmissivity
                                                                              0.798 & 0.733

                                                                              0.5958, 0.442, 0.2971, 0.2018, 0.1643 &
 Site slope                 0°               Viewfactor
                                                                              0.0447

                                             Minimum distance to < 40
 Flame width                100 m                                             10.1 m
                                             kW/m²

                                             Minimum distance to < 29
 Windspeed                  n/a                                               13.6 m
                                             kW/m²

                                             Minimum distance to < 19
 Heat of combustion         18,600 kJ/kg                                      20.1 m
                                             kW/m²

                                             Minimum distance to < 12.5
 Flame temperature          1,090 K                                           28.6 m
                                             kW/m²




AUGUST 2026                          BUSHFIRE HAZARD ASSESSMENT & MANAGEMENT PLAN                                       Page: 35
                                             380 MCKINNON DRIVE, COOROIBAH