Uniform Plumbing Code and Stack Termination

Discussion in 'UPC Plumbing Code Questions' started by IPDQKWID, Nov 24, 2017.

  1. IPDQKWID

    IPDQKWID New Member

    Joined:
    Jul 14, 2016
    Location:
    Minnesota
    906.2 Clearance Each vent shall terminate not less than 10 feet from, or not less than 3 feet above, an openable window, door, opening, air intake, or vent shaft ...

    None of these things occur on a normal house roof. The main items protruding from a single-family residence roof are usually exhaust, so I am wondering if I am mistaken in interpreting a roof-mounted attic vent as an opening?
    Thank you.

    I found this website, which tries to explain plumbing code while explaining what terms mean.
    https://inspectapedia.com/plumbing/Plumbing_Vent_Definitions.php#VClear
     
  2. Colepepper Plumbing

    Colepepper Plumbing New Member

    Joined:
    Mar 17, 2018
    Location:
    San Diego, CA
    If there is a second story to the house, this is what they are referring to. Say kitchen sink is first floor and there is a roof over hang, then the second story there is a window
     
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  4. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    Air conditioners with a make up air feature, or an evaporative cooler would be "air inlet" devices.
     
  5. cacher_chick

    cacher_chick Test, Don't Guess!

    Joined:
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    Occupation:
    Test, Don't Guess!
    Location:
    Land of Cheese
    Many houses also have dormers with windows, which would also be where the code section would be applied.
     
  6. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    If you search for the term "operable skylight", you will see there are skylights that can open.
     
  7. Cool Blue Harley

    Cool Blue Harley One Dumb Plumber

    Joined:
    Apr 16, 2016
    Location:
    San Francisco, CA
    This code section is really just about allowing for the diffusion of sewer gas and preventing it from entering the building.

    Three feet above a window, or ten feet away, three feet from the property line, one foot above the top of an operable skylight in the open position and seven feet above a roof deck used for assembly purposes.

    It usually comes into play during remodels where forethought is required and proper points of termination are overlooked; rear additions, shed roofs, roof decks, skylights.

    In commercial work, it's usually make-up air or air intakes as HJ mentioned.

    Edit: Oh, and in San Francisco where they have combination storm/ sanitary systems, rain water downspouts for roof drainage can be a problem.
     
    Last edited: Mar 27, 2018
    Terry likes this.
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