Approved Reference Documents - 132001.210127.3

Fire Safety Strategy – Bushfire Fire Spread Prevention
100 Cooyar Street, Noosa Heads QLD 4567




Figure 5 Bushfire Intensity Classes Overlay Map

Based on the above VHC a quantitative analysis has been undertaken by NCES to determine the radiant heat flux
(RHF) the building is subject to using the different VHC and the principles of AS 3959.
The results of this analysis determined that the building is subject to the following RHF:

VEGETATION HAZARD                                 RADIANT HEAT FLUX                    AREA OF SITE EXPOSED
CLASS
         22.1 (Sub Unit 1)                               7.47 kW/m2                            North of site
         29.2 (Sub Unit 2)                               13.47 kW/m2                         South east of site
         34.5 (Sub Unit 3)                               12.89 kW/m   2
                                                                                                East of site
Table 5 – Building occupancy and classification

Using the above data NCES have determined the necessary distances from these VHC sub units in order to get the
acceptance criteria of <10kW/m2. The following contour diagram shows the <10kW/m2 radiant heat flux exposure to
the site. Using this figure to describe the amount of radiant heat exposure to the site we are able to determine the
appropriate fire safety strategy for the development.
The assessment developed by NCES has also determined the design parameters for a radiant heat battier fence to
shield the potentially exposed south east and east. The extent of the shied is shown in the following diagram. The
shield is 2.5 m in height and of non-combustible construction.




P a g e 13 | 18                                                              Pro         Project Number: WBFE965-001-2023
                                                                                         Date: 22/03/2023