292 Illoura Place Cooroibah - Bushfire Management Plan · MCU20/0022

The ‘Noosa Plan 2017, Division 9 – Natural Hazards Overlays Code’ (O7) requires ‘building
works to be sited, designed and constructed to minimise the number of people and property
subject to a bushfire risk; and maximise the protection of people and property during the
passage of a fire front’. Councils Probable Solution (S7.1) of ‘1.5 times the predominant
mature canopy tree height or 10m whichever is the greater; and 10m from any retained
vegetation strips or small areas of vegetation’ is detailed.

Consequently, and as per the Bushfire Resilient Communities Technical Reference Guide
(QFES, 2019), the required setbacks (APZ’s) detailed in the AS3959-2018, with regard to
building construction standards, are considered appropriate to inform the identified bushfire
hazard to the proposed development and consequently meeting the intent of the
Performance Outcomes of Councils Planning Scheme and State Methodologies.

Subsequently, the following section details the Bushfire Attack Level requirements for the
proposed development. These calculations are subsequently used to inform required APZ
distances adjacent the proposed development, in order to comply with the performance
outcomes of the Australian Standard (AS3959-2018) and the intent of the Noosa Hazard
Overlay Code. It is noted that the proposed location of each structure has been assessed to
exceed 1.5 times the mature canopy height and >10m from adjacent assessable vegetation,
relative to each structure, as detailed below

3.2 Bushfire Attack Level Assessment
Australian Standard 3959 (2018) Construction of buildings in bushfire-prone areas provides
minimum construction standards for new dwellings in designated Bushfire Prone Areas. The
construction standards are intended to improve the performance of buildings subjected to
burning debris, radiant heat or flame contact. The AS3959- 2018 methodology prescribes
Bushfire Attack Levels (BAL’s) to the facades of proposed buildings to which corresponding
construction safety standards are applied. AS3959-2018 defines Bushfire Attack Levels as:

        ‘A means of measuring the severity of a building’s potential exposure to ember
        attack, radiant heat and direct flame contact, using increments of radiant heat
        expressed in kilowatts per metre squared, which is the basis for establishing the
        requirements for construction to improve protection of building elements from attack
        by bushfire.’

In accordance with the Australian Standard – Construction of Buildings in Bushfire-prone
Areas (AS 3959, 2018), the required construction standards for the proposed development
has been undertaken based on the potential Bushfire Hazard adjacent the proposed
development location as detailed above (Table 2).

This assessment has been based on the following assumptions:

 13 March 2020               292 Illoura Place, Cooroibah - Bushfire Management Plan    Page 14
                                             www.wollemi-eco.com.au