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




5.0 AS 3959:2018 BAL ASSESSMENT

AS 3959:2018 provides minimum construction requirements for assessable building works in
Designated Bushfire Prone Areas. Dwellings (and renovated parts of existing dwellings) in
Designated Bushfire Prone Areas must be built to the BAL construction standard relevant to the
dwelling as identified by AS 3959:2018.

5.1 Methodology
The BAL identified herein has been determined by using the simplified procedure described in
Clause 2.2 (Method 1) of the AS 3959:2018. Table 1 describes the steps used under AS
3959:2018 to determine the BAL.
Table 1 – Methodology




                                                                                                                 DRAFT NOT FOR SUBMISSION PURPOSES
 Step     Clause       Procedure

 1        2.2.2        Determine the relevant fire danger index.

 2        2.2.3        Determine the classified vegetation type(s)

 3        2.2.4        Determine the distance of the site from the classified vegetation type(s)

 4        2.2.5        Determine the effective slope(s) under the classified vegetation type(s)

 5        2.2.6        Determine the BAL from the appropriate table.

 6        2.2.7        Determine the appropriate construction requirements.

Based on the conditions observed during the site inspection in July 2019, the following input data
was used to determine the BAL (refer to Table 2).
Table 2 – Input Data

 Input Parameter                                     Input Data

 Fire Danger Index                                   50 (Leonard et al., 2014)

 Vegetation Type                                     Type B - Woodland

 Distance of classified vegetation from              0m (no clearing proposed with the application)
 building

 Effective slope(s) under the classified             Downslope >0 to 5 degrees
 vegetation type


The potential AS 3959:2018 BAL’s acting on the dwelling based on the above conditions is
derived from Table 2.6 of AS 3959:2018.




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