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    Attic & fireblock

    Attic & fireblock

    New postby Marc M on Fri Mar 02, 2012 3:53 am

    Hey Jerry, is there a fireblocking conflict by having a door that leads into an attic in a hallway that also acts as an attic over the existing structure?
    SECTION R807
    ATTIC ACCESS
    R807.1 Attic access. Buildings with combustible ceiling or
    roof construction shall have an attic access opening to attic
    areas that exceed 30 square feet (2.8 m2) and have a vertical
    height of 30 inches (762 mm) or greater. The vertical height
    shall be measured from the top of the ceiling framing members
    to the underside of the roof framing members.
    The rough-framed opening shall not be less than 22 inches
    by 30 inches (559 mm by 762 mm) and shall be located in a
    hallway or other readily accessible location. When located in a
    wall, the opening shall be a minimum of 22 inches wide by 30
    inches high. When the access is located in a ceiling, minimum
    unobstructed headroom in the attic space shall be 30 inches
    (762 mm) at some point above the access measured vertically
    from the bottom of ceiling framing members. See the California
    Mechanical Code for access requirements where mechanical
    equipment is located in attics.
    Marc M
     
    Posts: 173
    Joined: Sat May 09, 2009 10:24 am

    Re: Attic & fireblock

    New postby Jerry Peck - Codeman on Fri Mar 02, 2012 1:50 pm

    No conflict with the two as fireblocking is for blocking off concealed spaces, such as wall stud spaces, from the attic.

    An example of fireblocking for walls is at the floor, at the ceiling, and 10 feet horizontally.

    The intent is to block the spread of fire from vertical spaces (such as walls) from horizontal spaces (such as floor and ceiling areas) and vice versa.
    Jerry Peck - CodeMan
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    Re: Attic & fireblock

    New postby Marc M on Fri Mar 02, 2012 11:47 pm

    Sure thing, vertical.. thanks so much.
    Marc M
     
    Posts: 173
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