Determine the Bushfire Attack Level (BAL) using the detailed Method 2 procedure of AS 3959, which calculates the radiant heat flux at the site from the fire characteristics of the classified vegetation.
Method 2 exposes the full calculation. The advanced inputs default to the standard AS 3959 values and only need changing for a site-specific assessment.
Bushfire Attack Level — AS 3959 Method 2 — Results
| Site | |
|---|---|
| Vegetation classification | |
| Fire danger index (FDI) | |
| Effective slope | |
| Site slope | |
| Distance to vegetation | |
| Wind speed | |
| Flame and fuel assumptions | |
| Flame width | |
| Flame emissivity | |
| Flame temperature | |
| Heat of combustion | |
| Ambient temperature | |
| Relative humidity | |
| Fuel moisture | |
| Fuel age | |
| Calculated values | |
| Surface fuel load | |
| Overall fuel load | |
| Rate of spread | |
| Fire line intensity | |
| Flame length | |
| Flame angle | |
| Elevation height | |
| Emissive power | |
| Configuration factor | |
| Atmospheric transmissivity | |
| Result | |
| Radiant heat flux | |
| Bushfire Attack Level | |