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  1. #1
    Join Date
    Sep 2008
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    so so, California
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    Default Commercial fire wall

    in commercial or IBC, is anyone aware of any specific fire separation materials used for specific fuel types?
    in other words, does the fuel dictate the fire stop / fire block materials. im only aware of different materials used in different applications such as pipe penetrations, smoke seals, wall, ceiling, through wall penetrations etc...

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  2. #2
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
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    27,286

    Default Re: Commercial fire wall

    Marc,

    Your reference to difference fuels suggests Group H Occupancy (High-Hazard) as Group S (Storage) applies to: S-1 Moderate-Hazard; or S-2 Low-Hazard storage.

    Group H occupancy has different levels of fire-resistance ratings for walls (vertical assemblies) and floor-ceiling or roof-ceiling (horizontal assemblies) depending on the hazard (fuel) and the amount of that hazard stored/contained in that location.

    The typical difference in fire-resistance rating is not in the materials the wall is made of, the difference is from the construction of the wall (it is typically the number of layers the wall/ceiling is constructed from), and the rating for protection of openings in that wall depends on the hour rating of that wall, and the rating of penetrations through or into that wall/ceiling is based on the hour rating of that wall (to maintain the rating of that wall).

    I'm not quite sure is that addresses your question?

    Last edited by Jerry Peck; 02-28-2019 at 08:51 AM. Reason: added two missing ")"
    Jerry Peck
    Construction Litigation Consultant ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  3. #3
    Join Date
    Sep 2008
    Location
    so so, California
    Posts
    1,855

    Default Re: Commercial fire wall

    Quote Originally Posted by Jerry Peck View Post
    Marc,

    Your reference to difference fuels suggests Group H Occupancy (High-Hazard) as Group S (Storage) applies to: S-1 Moderate-Hazard; or S-2 Low-Hazard storage.

    Group H occupancy has different levels of fire-resistance ratings for walls (vertical assemblies) and floor-ceiling or roof-ceiling (horizontal assemblies depending on the hazard (fuel) and the amount of that hazard stored/contained in that location.

    The typical difference in fire-resistance rating is not in the materials the wall is made of, the difference is from the construction of the wall (it is typically the number of layers the wall/ceiling is constructed from, and the rating for protection of openings in that wall depends on the hour rating of that wall, and the rating of penetrations through or into that wall/ceiling is based on the hour rating of that wall (to maintain the rating of that wall).

    I'm not quite sure is that addresses your question?
    Actually it does perfectly, thanks.


  4. #4
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    27,286

    Default Re: Commercial fire wall

    I kept forgetting to add a link to the fire resistance design manual:

    https://www.gypsum.org/wp-content/up...version-1.html

    Jerry Peck
    Construction Litigation Consultant ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

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