your House Survive a Bushfire ?
calculator is based solely on research into house losses that occurred
during the 1983 Ash Wednesday fire at Mount Macedon, Victoria. It
is for houses exposed to a forest fire which is driven by strong winds
on a very hot day i.e. extreme fire weather conditions. In a forest,
assume the calculator maybe in error by +or- 15%. In grassland or
other fuel types it should be useful but less accurate.
the most important factor which determines house survival. Intensity
can be reduced by decreasing the available FUEL on the ground within
at least 40 metres of the house.
a house they increase the hazard by a small amount, if however the
fuel load on the ground is reduced then trees can be retained.
measure fuel load measure a 1 metre by 1 metre square on the ground.
Collect all the dead fuel that is thinner than a pencil and weigh
it. Divide this weight by 100 and you have the fuel load in tonnes/hectare.
accurate results obtain several samples around the house and average
a fire it is important for house survival. Well prepared people who
stay at a properly prepared house throughout a fire can extinguish
small fires and thereby stop a house from burning down. Evacuations
just before a fire arrives are risky. A house or similar building
is usually the safest refuge during a fire since it will protect you
from the radiant heat of the fire.
Assessing the bushfire hazard of houses:
a quantitative approach. A.A.G. Wilson (1984) Technical Paper
No. 6, National Centre of Rural Fire Research.
Fight or Flee? - a case study of the Mount
Macedon bushfire. A.A.G. Wilson and I.S. Ferguson (1984). Australian
Forestry Vol. 47.
Predicting the probarbility of house survival
during bushfires. A.A.G. Wilson and I.S. Ferguson (1986). Journal
of Environmental Management Vol. 23.
This meter was made available by Firebreak,