Chapter 22: Wildland Urban Interface Flashcards
Wild Land Urban Interface
any area where structures are located adjacent to or among combustible wildland fules
9 Parts of wild land fire
Head:fastest moving Fingers:Lang narrow strips rapidly burning Rear/Heel: opposite the head, slow burn Flanks: sides of fire Perimeter: boundaries of fire Islands: unburned areas inside the fire Green: area out side the fire Black: Blackened land consumed by fire Spot fire: fires outside the main body caused by wind and sparks
Fire Bans: Fire Marshal, Dep. Chief public safety, Fire chief
FDD FBI
code index
Decision to issue a fire-ban is based on a consideration of 6 code components: Fire Weather Index System
Fine Fuel Moisture Code
Duff Moisture Code
Drought Code
Fire Weather Index
Build Up Index
Initial Spread Index
Strategic Considerations of WIldland
LASE
Looksouts
Anchor points
Safety Zones
Escape Routs
Types of Wildland FIre
Crown
Surface
Ground
Main Factors Infulencing Fire Behaviour
-Fuel:Ground, Surface, Crown
-Weather :30/30 Cross over:<30%Hum.+>30’C= ext.Fire
For every 11’ increase in temp Hum. drops by half
Wind,Temp,Humidity,Percipitation
-Topography
Ranking of Fire 1-6
1: smoldering/creeping ground
2: Low Vigor surface fire
3: Moderately Vigorous Surface Fire
4: Highly Vigorous surface fire
5: Ex.t Vig. Fire or active crown Fire
6: Blow up or Conflagration
Size up En-route
Smoke,Weather,assess best route, Water supply
Size up on arrival
What do I Have What is it doing What do I have to do Resources needed what am I going to do
Methods of attack
Direct:Flank, Frontal, Mobile: putting the wet stuff on the hot stuff
Indirect: use of natural barriers and fuel removal to set up control lines
Mop Up the Fire
Burn excess fuels
Remove fuel so that it cannot burn
3Rs
Retreat
Regroup
Re-Assess
We us what type of hose lay
Progressive
Class A Foam
- 1: deep seated fire
- 1-.0.5%: wildland & grass Fire
- 5: structural firefighting
- 0% Protecting exposures and creating foam barriers
