9. BUSHFIRE ATTACK LEVEL REPORT v1 - NOOSA NORTHSHORE RETREAT · MCU19/0117

Bushfire Attack Level Report v1                                                    NCES REF: J000436
Lot 500 on SP215779 – 90 Beach Road, Noosa North Shore




                                                                                                       DRAFT NOT FOR SUBMISSION PURPOSES
5.2 Results
Table 2.6 of AS 3959:2018 identifies the following setback distances between the proposed
building and assessable vegetation are required to achieve the various BAL build requirements:
•        BAL Flame Zone – <9m
•        BAL 40 – 9m – <12m
•        BAL 29 – 12m – <18m
•        BAL 19 – 18m – <26m
•        BAL 12.5 – 26m – <100

5.3 Vegetation Management to Reduce BAL Rating
No clearing was nominated as part of the scope of our assessment and therefore the building
would currently trigger BAL Flame Zone given its position amongst Type B Woodland. Building
in BAL Flame Zone is undesirable and vegetation management (i.e. clearing) can increase
separation distances between the building and the adjacent hazardous vegetation thereby
providing the opportunity to lower the BAL acting on the building.
Due to the extensive amount of hazardous vegetation flanking the location of the proposed
dwelling, a minimum BAL 29 construction standard separation is recommended,, which is
consistent with Assessment Benchmark 3 - Bushfire, flood, landslide, storm tide inundation, and
erosion prone areas outside the coastal management district of the State Planning Policy – state
interest guidance material October 2018 Subclause 2 which states:
         2. A bushfire defendable space is provided between buildings or building envelopes and
         hazardous vegetation by a distance that achieves a radiant heat flux level at any point on
         the building or envelope that does not exceed 29 kW/m². The bushfire defendable space
         is to be contained wholly within the development site. The extent of bushfire defendable
         space is to be established in accordance with – Detailed bushfire hazard assessment in
         the Planning for Bushfire Resilient Communities document.
Therefore, a low threat Asset Protection Zone measuring no less than 12m in a linear plane


© 2019                                               5