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  1. #1
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    Default Wut's up with this vent?

    So this vent is from a water heater, viewed from the second story. It terminates 5 feet from this operable window and less than that from that wall to the right. From what I understood, the vent must terminate above the roof when less than 8 feet from the wall (I thought it was 5'), and then there is this window.



    G2427.6.3 (503.6.4) Gas vent termination.
    A gas vent
    shall terminate in accordance with one of the following:
    1. Gas vents that are 12 inches (305 mm) or less in size
    and located not less than 8 feet (2438 mm) from a vertical
    wall or similar obstruction shall terminate above
    the roof in accordance with Figure G2427.6.3.




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  2. #2

    Default Re: Wut's up with this vent?

    Correct-- it can't be within 8' of the sidewall. When it gets extended, it must extend up a min. of 2' above the upper roof line as well.


  3. #3
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    Default Re: Wut's up with this vent?

    Interresting...you have to wonder how an entire housing track got away with this.
    Thanks BW

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  4. #4
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    Default Re: Wut's up with this vent?

    I believe you are not reading the correct code


    2. Gas vents that are over 12 inches (305 mm) in size or
    are located less than 8 feet (2438 mm) from a vertical
    wall or similar obstruction shall terminate not less
    than 2 feet (610 mm) above the highest point where
    they pass through the roof and not less than 2 feet (610
    mm) above any portion of a building within 10 feet
    (3048 mm) horizontally


    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  5. #5
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    Default Re: Wut's up with this vent?

    Over, under 12"...Isn't the vertical wall issue still applicable?
    Thanks

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  6. #6
    Join Date
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    Lake Barrington, IL
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    Default Re: Wut's up with this vent?

    Quote Originally Posted by Brandon Whitmore View Post
    Correct-- it can't be within 8' of the sidewall. When it gets extended, it must extend up a min. of 2' above the upper roof line as well.
    Brandon, Obviously it can be w/i 8' because someone did it. But I know what you meant.

    Eric Barker, ACI
    Lake Barrington, IL

  7. #7
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    Default Re: Wut's up with this vent?

    There is a difference

    Gas vents that are 12 inches (305 mm) or less in size
    and located not less than 8 feet (2438 mm) from a vertical
    wall or similar obstruction shall terminate above
    the roof in accordance with Figure G2427.6.3.

    The photo shows it IS LESS than 8'
    Since it IS LESS than 8', then rule 2 applies

    2. Gas vents that are over 12 inches (305 mm) in size or
    are located less than 8 feet (2438 mm) from a vertical
    wall or similar obstruction shall terminate not less
    than 2 feet (610 mm) above the highest point where
    they pass through the roof and not less than 2 feet (610
    mm) above any portion of a building within 10 feet
    (3048 mm) horizontally

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  8. #8
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    Sep 2008
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    Default Re: Wut's up with this vent?

    ooh yes, I had to read that twice and slowly. I hate the way code is written.

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