1. #1
    MembersZone Subscriber

    Join Date
    May 1999
    NY state of mind

    Default Light weight truss construction. Has it changed your tactics?

    With the abundant use of light weight construction in the building trade these days, how have your departments changed their tactics in regard to vertical venting? Do you still send the truckies to the roof or has the Truss eliminated this tactic from our toolbox. This pertains to flat roofs as well as residential peak roofs. Since vertical ventilation is so critical what are the alternatives other than the use of arial devices?
    Last edited by Smokeetr4; 10-24-2004 at 08:28 PM.
    "Never trust a smiling dog"
    Delaware F.O.O.L. FTM-PTB-EGH

  2. #2
    Forum Member

    Join Date
    Sep 2004
    metro detroit

    Unhappy I-joists are the real problem

    I come from a very small career dept. so we don't have a "truck" company and never have. Most of the time we are dealing with a room and contents with 1-2 rooms involved so we are able to hit it and open up the ceiling ASAP. If there is extension it is usually minimal and an indirect attack has always taken care of it. If you have extensive fire overhead, in my opinion, it's pretty obvious before we make entry after doing a quick walk around. Because these types of roofs are built to "breath", taking note of the smoke velocity so to speak can tell you alot. If it's really chugging it's would be advisable to keep people from going onto or under this type of roof system and go to 'plan B' which is using a thermal imager and opening up from below from the safest place possible.

    We have one subdivision that was built with I-joist with no protection from below. Good thing is we know about this hazard and will deal with it by just staying out from under these things.

  3. #3
    Junior Member

    Join Date
    Oct 2004


    Our Dept. simply don't have the staffing required to vertically vent any structure initially.. A method we've found useful is take the window (Top plain) of the fire room, and 99% of the time it works well..But we mostly cover another type of construction I like to call toothpick/cardboard, Also known as mobile homes..But of course there're always variables that can change the approach of the attack team were we would have to go about this another way.. Interesting to see how everybody else would handle this..Good post
    Ain't skeerd

  4. #4
    MembersZone Subscriber
    SteveDude's Avatar
    Join Date
    Oct 2002
    London, England


    Don't want to re-start an old argument here gang, but us in the UK, the Aussies ,Kiwi's and most of the rest of the world get by without vertical ventilation...in our case constuction prevented it because you can only 'Blow a hole' in most of our Brick/Concrete Buildings...(wooden construction became unpopular after The great Fire of London in 1666 )

    Latterly Firefighter safety issues have prevented it, we get our asses kicked to death for LODD's so we are now legally obliged to provde 'safe systems of work' from everything from a trash fire to a multi alarm in a big warehouse...

    For a savable life...take a calculated risk
    For a savable Building...take a little risk
    For a life & Building that is lost...take no risk.

    With that in mind we still have good survivability figures for those recued in fires and the Insurance companies are not taking us to the cleaners every day of the week..

    Lightweight construction...not worth the life of a brother, keep well away.
    Steve Dude
    IACOJ member

    London Fire Brigade...."Can Do"

    'Irony'... It's a British thing.

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