Building Code and Building Construction - Questions and Answers
Or when you want to know how construction is supposed to be done.

|
AskCodeMan.com
|
The following Codemen are available to answer your questions:
All Codes and Standards - Jerry Peck, Codeman


Q&A Board links
  • REGISTER

  • FAQ

  • LOGIN

  • Q&A BOARD INDEX

  • View New Questions

  • View Unanswered Questions

  • View Active Questions/Answers

  • Mark Questions as read

  • View Your Questions

  • Go To Your User Control Panel




  • Links to:
  • Construction Litigation Consultants


  • Florida Building Commission

  • Florida Building Codes Online


  • International Code Council

  • ICC Codes Free Online


  • Building Officials and Administrators of Florida




  • Product Approvals
  • Florida Product Approval

  • ICC Evaluation Reports Search

  • Miami-Dade NOA Search




  • Inspector and Contractor License Search
  • Search Florida Licenses




  • Technical links
  • Technical Information page


























































  • Contact Codeman



  • Custom Search

    5/8 fx on outside walls

    5/8 fx on outside walls

    New postby pottsth on Tue Sep 18, 2012 5:22 pm

    I have a 4 unit apartment building, 2 floors, 2 units teach floor. R2,5B w/ automatic sprinklers. I detailed the outside walls with 5/8 FX because the distances between buildings varies. Some are 25' apart, but in some cases the distance on a corner may go down to 12-13'. My builder wants to know if 1/2" regular is ok, and if not, what the minimum distance between buildings would be.
    pottsth
     
    Posts: 1
    Joined: Tue Sep 18, 2012 9:09 am

    Re: 5/8 fx on outside walls

    New postby Jerry Peck - Codeman on Tue Sep 18, 2012 6:47 pm

    Occupancy is R2
    Construction Type is VB
    Using the 2006 IBC (not knowing what code is applicable, but most areas are at least on the 2006 edition of the ICC codes)

    Table 602, shows:
    - First column is fire separation distance, you mentioned no separation less than 10 feet and all separation was <30 feet, go down to the third row.
    - Second column in third row shows that this distance is divided into 3 sub-rows based on Type of Construction and VB is the center sub-row within that third row in the first column.
    - Fifth column shows R occupancy is under that column, go down to the third row, the center sub-row, -0- is shown as the minimum fire-resistance rating of the exterior walls.

    The exterior walls do not require a fire-resistance rating. However, if the walls did require a fire-resistance rating, keep in mind that the rating is from both sides, so installing Type X on just the interior surface does not help, the exterior surface would also need to be part of a fire-resistance rated design, and any windows and doors in those walls would also need to meet the requirements for openings in those fire-resistance rated walls (if a fire-resistance rating was required, none is).

    FIRE-RESISTANCE RATING REQUIREMENTS FOR EXTERIOR WALLS BASED ON FIRE SEPARATION DISTANCE 'a' 'e'
    Table 602 Fire Separation - fire resistance rating of exterior walls.jpg


    Refer to notes 'a' and 'e' as they are at the end of the table title:
    - a. Load-bearing exterior walls shall also comply with the fire-resistance rating requirements of Table 601.
    - e. The fire-resistance rating of an exterior wall is determined based upon the fire separation distance of the exterior wall and the story in which the wall is located.

    Note 'a' says to refer to Table 601 for load bearing exterior walls, and Table 601 shows, for Type VB, -0- fire-resistance rating for the walls. For other Types of Construction, Table 601 could change the from what is shown in Table 602, so be careful when using any table and make sure to read and check out the notes.
    You do not have the required permissions to view the files attached to this post.
    Jerry Peck - CodeMan
    AskCodeMan.com

    Construction and Litigation Consultant
    Construction Litigation Consultants, LLC.
    ConstructionLitigationConsultants.com
    User avatar
    Jerry Peck - Codeman
    Site Admin
     
    Posts: 1089
    Joined: Fri Dec 12, 2008 12:06 pm


    Return to Fire-rated assemblies: Fire walls, fire partitions, smoke barriers, ceiling-floor, ceiling-attic; Separation of garages from dwelling unit; Separation between structure's exterior walls and property line



    Who is online

    Users browsing this forum: No registered users and 1 guest



    www.AskCodeMan.com
    cron