Venting In Vaulted Celing

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by sugoii, Sep 26, 2005.

  1. sugoii

    sugoii New Member

    Messages:
    1
    I have a kitchen sink on the front of the house that I vented along the slope of the vaulted ceiling and then back down the other side where it ties to another drain and the vent on the back side of the house. The vwent will fully drain on both sides of the house, so as far as functionality there is no question that it will work. My inspector will pass it if I can give him code refrences that allow such venting. I have no idea where to start, and at this point don't have access to the code. Is there an allowance for venting this way in the international plumbing code?
  2. RioHyde

    RioHyde Plumber

    Messages:
    339
    Location:
    Cincinnati, Ohio
    While the IPC doesn't address running a vent in a vaulted ceiling specifically, it does state the following in Chapter 9 Section 905.2:

    Grade - All vent and branch vent pipes shall be so graded and connected as to drain back to the drainage pipe by gravity.

    With the new vent being connected to the vent on the backside of the house and therefore to a drain on both sides of the house, your vent does drain by gravity to a drainage pipe. I have seen it done this way and pass here in Cincinnati. The only thing the inspector MIGHT argue is the word "the" in "drain back to THE drainage pipe by gravity" rather than the word "a".

    Good luck!
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,525
    Location:
    Cave Creek, Arizona
    vent

    As long as the inspector is being reasonable about it, which the ones in this area would not be, reference him to the "yoke" vent for an island sink drain, which is exactly the same thing except on a condensed scale.
  4. toolaholic

    toolaholic General Contractor Carpenter

    Messages:
    874
    Location:
    Marin Co. Ca.
    i don,t understand why your doing this

    why not have 2 roof vents ,one on each side. island vents don,t have that option
  5. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,525
    Location:
    Cave Creek, Arizona
    vent

    He may be like a lot of people and doesn't want a vent exposed on the front of the roof.
  6. toolaholic

    toolaholic General Contractor Carpenter

    Messages:
    874
    Location:
    Marin Co. Ca.
    thank,s H J

    i kinda guessed that was the reason. Your inspectors can,t be as bad as S. F.

    don,t get me started !
Similar Threads: Venting Vaulted
Forum Title Date
Plumbing Forum, Professional & DIY Advice, Tips & Is my bathtub plumbing correct? Venting/Drain setup Aug 19, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Gurgling after using bathroom sinks - venting question! (pic attached) Aug 19, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Do ALL drains need venting? Aug 15, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Venting issue after new pump installed in ejector pit (with picture)! Jul 21, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Ejector Pit Venting Jul 18, 2014

Share This Page