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Approved Plan - RAL21-0008
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Log in to see the plans as drawnFigure 8. Main Bushfire Attack mechanisms (Image courtesy of Ramsay & Rudolf, 2003) 6.3 Anticipated severity of bushfire attack Values for vegetation type, fuel load and slope are carried forward to Table 2, to predict the key fire parameters for the potential worst case fire scenario. Fire Scenario – Forest West Fire Scenario – Forest West Method 2 AS3959-2018 Method 1 AS3959 – 2018 FDI 50 FDI 40 Forest @ 21/24.2t/ha. Forest Ave Slope under vegetation 0⁰ Flat Ave Slope under vegetation 0⁰ Flat Fire Intensity (Byram, 1959) 15 689kW/m (“MEDIUM”) Rate of Spread (Noble et al, 1980) 1.26kph Flame Height (modified Mc Arthur V equation, NSW RFS 2001) 11.08m Flame Width 100m Elevation of Receiver 2.4m BAL FZ within <10m of intact unmanaged vegetation BAL FZ within <10m of intact unmanaged vegetation BAL 40 from 10 - <13m BAL 40 from 10 - <13m BAL 29 from 13 - <19m BAL 29 from 13 - <20m BAL 19 from 19 - <27m BAL 19 from 20 - <28m BAL 12.5 from 27 – 100m BAL 12.5 from 28 – 100m Table 2. Calculated values for potential bushfire characteristics, and methods used. Report compiled by Bushfire Risk Reducers for Mr K. Courtney, January 2021 Page 14
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