Appendix D - Bushfire Assessment · RAL26/0026

APPENDIX B – Flamesol Modelling



                                        Calculated August 20, 2026, 10:00 am (MDc v.4.9)

                                                      SUB UNIT 1 - VHC 9.1

                                     Minimum Distance Calculator - AS3959-2018 (Method 2)

                   Inputs                                                       Outputs

 Fire Danger Index          48               Rate of spread                  1.2 km/h

 Vegetation
                            Forest           Flame length                    10.76 m
 Classification

 Understorey fuel
                            21 t/ha          Flame angle                     54 °, 64 °, 72 °, 77 °, 78 ° & 84 °
 load

                                                                             4.35 m, 4.83 m, 5.11 m, 5.24 m, 5.26 m & 5.35
 Total fuel load            24.2 t/ha        Elevation of receiver
                                                                             m

 Vegetation height          n/a              Fire intensity                  15,124 kW/m

                                                                             0.879, 0.864, 0.842, 0.8179999999999999,
 Effective slope            0°               Transmissivity
                                                                             0.805 & 0.737

                                                                             0.591, 0.4397, 0.2949, 0.2003, 0.1631 &
 Site slope                 0°               Viewfactor
                                                                             0.0445

                                             Minimum distance to < 40
 Flame width                100 m                                            9m
                                             kW/m²

                                             Minimum distance to < 29
 Windspeed                  n/a                                              12.1 m
                                             kW/m²

                                             Minimum distance to < 19
 Heat of combustion         18,600 kJ/kg                                     17.9 m
                                             kW/m²

                                             Minimum distance to < 12.5
 Flame temperature          1,090 K                                          25.8 m
                                             kW/m²




AUGUST 2026                           BUSHFIRE HAZARD ASSESSMENT & MANAGEMENT PLAN                                     Page: 34
                                              380 MCKINNON DRIVE, COOROIBAH