Refernce Documents - RAL25 0001

                 5 METHODS
                 Bushfire prone areas in Queensland are identified, mapped and categorised as a function of
                 potential fireline intensity (kW/m). Potential fireline intensity can be calculated and mapped
                 spatially as a function of three inputs according to the method described by Leonard et al.
                 (2014) (Refer to Figure 3):

                     i.   Fuel load based on vegetation hazard classes,
                    ii.   Maximum landscape slope, and,
                   iii.   Fire weather severity

                 The method described by Leonard et al. (2014) utilises a modified version of the McArthur
                 Equation (McArthur 1967; Noble et al. 1980). Hazard assessment should incorporate both the
                 development footprint and all land within 150 metres of the development footprint (site
                 assessment area) (Queensland Fire and Emergency Services 2019). Where development
                 involves or proposes changes to the configuration of vegetation within the site assessment
                 area, the re-modelling of bushfire behaviour is necessary.

                 Modelling of potential fireline intensity should incorporate the effects of the proposed
                 development on the configuration of vegetation within the site assessment area including:

                      •   all necessary clearing to support the development and infrastructure, and,
                      •   all requirements for revegetation, landscaping or environmental offsets.

                 Modelling potential fireline intensity utilised a combination of desktop and field methods,
                 including geoprocessing of spatial inputs and modelling of bushfire hazard according to the
                 process described in Bushfire Resilient Communities (Queensland Fire and Emergency
                 Services 2019).

                 The modelling included the following measures of fire behaviour:

                     i.   Potential bushfire fireline intensity (PFI, kW/m), and
                    ii.   Radiant heat flux/Bushfire Attack Level (kW/m2/BAL) according to the View Factor
                          Method described in AS 3959:2018 using the SPP Bushfire Asset Protection Zone
                          Width Calculator (Queensland Fire and Emergency Services 2019).




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Document Set ID: 23448646
Version: 1, Version Date: 13/01/2025