Determining the Bushfire Attack Level (BAL)
In accordance with Australian Standard AS 3959

Contact us for a quote to do your BAL report or BMO report

AS3959-2018 has various limitation based around the slope of the land within 100m to say
approximately 140m from the building envelope


Simplified Procedure for determining the BAL - Method 1

Can only be used where the slope under classifiable vegetation is equal to or less than
20 degrees downslope.






Detailed Method for determining the BAL - Method 2 (Appendix B)

Method 2 is a complex methodology and can be used for steeper sites where the slope under
classifiable vegetation is equal to or less than 30 degrees downslope.

Method 2 also has a limitation where the slope between the house site and the classifiable
vegetation is equal to or less than 20 degrees regardless of slope type ie upslope or downslope.

We have a few ideas regarding of how to handle this limit; nothing guaranteed however ring us to discuss.




We have specific equipment to measure the slope.

Available 7 days a week, ring us on 0417 885 747

We would welcome the opportunity of expanding on any of the points mentioned above.

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BAL ASSESSMENTS
Mobile: 0417 885 747
email: John@BAL.net.au

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