7. Attachment F - Bushfire Hazard Assessment

                                                         Bushfire Hazard Assessment and Management Plan



proponent. That is, where further actions are deemed necessary or where actions can be reduced in
scope.

4.4 Siting of Buildings

In accordance with the SPP 2017 (and associated guidance material) and the Noosa Plan 2020, the
proposed design has considered the key principles when siting development. The relevant clauses that
have been considered are:

    •    Utilising land that is predominantly cleared to minimise ecological impacts to native vegetation;

    •    Maximising where practicable building frontage setbacks from any hazardous vegetation; and

    •    Siting of buildings so that elements of the development that are least susceptible to fire are
         situated closest to the bushfire hazard (e.g. driveways, parking areas and protective landscape
         treatments).

4.5 Asset Protection Zones

The use of an APZ is the most effective defence against flame and radiant heat and to a lesser extent,
ember attack. The APZ incorporates defendable space and allows for managing heat intensities at the
building surface. Appropriate vegetation management measures shall be required to manage fine fuels,
which have the greatest influence on the spread of a conventional flame front-driven bushfire
(Queensland Government and CSIRO, 2020).

The QFES BRC Document specifies that vulnerable uses (i.e. Hospices, Age Care Facilities etc.) in
bushfire prone areas must not be exposed to a radiant heat flux level of greater than 10 kW/m2 at all
development footprint boundaries. An Asset Protection Zone (APZ) must be established on the property
on all sides of the proposed new building, to ensure that it will be able to achieve and maintain a BAL-
10 construction rating (Figure 6). The APZ will cover all areas on Figure 6 outside of the mapped
‘hazardous vegetation’ area. This APZ will have the following characteristics:

    •    Inner Protection Area (IPA): 0 – 10m from the edge of the new building. This area is to be
         maintained as an area that is effectively free of flammable material to provide defendable space
         and for managing heat intensities at the building surface. The IPA is to be managed as follows:

             o   Removal of all canopy trees and shrubs within the IPA. New trees are not to be planted
                 in the IPA.

             o   Landscaping treatments within the IPA shall comprise low threat vegetation, including
                 lawn areas managed in a minimal fuel condition (i.e. ≤ 100 mm nominal height as
                 specified in AS3959:2018) and landscape garden plant species that are of low
                 combustibility (i.e. species with high leaf moisture content, low volatile oil content,
                 absence of shedding bark, low production of leaf litter etc.). Flammable plants are not
                 permitted.

             o   Plants must be arranged to minimise vertical and horizonal connectivity of plant
                 material.

             o   Plants must be no closer than 5 metres from an exposed window or door.

             o   Mulches within any landscaped areas are to be non-combustible.




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