Appendix F - bushfire attack level assessment report · 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