Reference Document - Bushfire attack level assessment repor (As Published)t · MCU25/0022

              Figure 9. Radiant Heat Flux Predicted by Methods 1 and 2 under AS3959 - 2018.

              With a minimum setback of 25m from intact and unmanaged vegetation downslope, BAL 19 construction
              under AS3959-2018 is shown to be viable.

              Any Class 10a structure built within 6m of the dwelling shall be constructed in accordance with this Standard.


              The significance of the radiant heat flux levels discussed is shown below in Table 4.




              Table 4. Significance of various RHF levels (Source: NSW RFS, 2006)



               Report compiled by Bushfire Risk Reducers for Mr A. Wittaker, February 2023              Page 16

Document Set ID: 24478325
                  23591412
Version: 1, Version Date: 19/01/2026
                          28/02/2025