Thread: backdraft potential
04-22-2001, 04:40 PM #1phyrngnFirehouse.com Guest
OK...dumb question. You arrive @ a two-story, wood-frame, SFD with smoke "pulsating" from the eaves and soffits. No windows have broken out, but are smoke-tinged and hot to the touch. Training says to go to the roof and ventilate. Now is that the case even if the fire is "reported" to be on the first floor? I realize that ventilation must be coordinated with attack, but how do you do this? Do you have a charged hoseline waiting at the side of the front door and send crews to the roof to ventilate right away, and when the hold is cut, send the knob in? What if the roof crew ventilates the roof and tries to push in the ceiling only to find that the ceiling is actually a wood floor of the attic?
04-22-2001, 08:05 PM #2Captain GonzoFirehouse.com Guest
If it's a two story wood frame with fire reported on the first floor, and there's smoke pulsating out of the eaves and soffits, I would say that you are dealing with balloon frame construction. Vent the roof from the protection of the aerial/tower ladder, then vent horizontally and begin fire attack.
If the construction is platform wood frame, then the fire has extended to the floors above either via the stairwell or through the pipe chases...the same ventilation strategy would be used.
Firefighters: rising to accept the challenge!
04-23-2001, 07:06 PM #3Archer131Firehouse.com Guest
VENT THE ROOF
If it is as you have described pulsating from the eves then you need to expell the gasses smoke etc. which rise when super heated hence the reason for startin at the top. Be prepared for a more direct attack once you've ventilated. Depending on the involvment this direct attack could be done interior or exterior.
04-27-2001, 01:29 AM #4LadderCappFirehouse.com Guest
Goin' Vertical ,, The only way you're going to make a substantial impact is to rid the heat for entry. With the wood flooring in the attic presenting a truly vertical obstacle, take out windows on second floor at the highest possible point as close as you can find to above the seat, preferably from arial device. Use fog nozzle on arial pipe to protect exposures from extreme heat from upper story windows. Face it, it's not a desirable scenario, but workable.
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