Information response MCU13/0030

       Figure A3.i: Compass degree ranges for each aspect category


                   N
                                               ~        East to South (90-180degrees)          -
                                                                                                 score 0



                                                        North to East (0-90degrees)        -
                                                                                              score 1

W                                      E
                                               !ill]    West to South (180-270degrees)             score 2
                                                                                                   -




                                               m         North-West to West (270-315degrees)             -
                                                                                                             score 3



                                               .North to North-West (31$-360degrees) score 3.5               -


                                                                                                                           I
                                                                                                                       I



                   S
       Step 4: Combining scores to Identify the severity of bushfire hazard

Al.i8 The scores for the individual factors determined for vegetation communities, slope and
        aspect are added together to give a total for each sub-unit as follows:

        Total hazard score      =
                                    vegetation community .hazard score + slope hazard score + aspect
                                    hazard score.



A3.i9 The total hazard score determines the severity ofbushfu:e hazard for each sub-unit as set
        out in Table A3.4.


        Table A’.4: Hazard score ranges to id,ntify the severity of bushfire hazard


                Total hilzal’d Si.’Ort’          Scycrit) of bushlrc hazard
                    13 or greater                             Hili
                                                               ’

                                                               191
                      6 to 12.5                              Medium
                       1 to 5.5                                    Low




      Buildings in High severity bushfue hazard areas should be constructed in accordance with the Level 1
 45


      requirements ofAS 3959:1999 ’Construction ofBuildings in Bushfrre-Prone Areas’.



 spp Guideline 1/03                                                                                     June 2003
                                                          47