Venting In Vaulted Celing

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

  1. sugoii

    sugoii New Member

    Joined:
    Sep 26, 2005
    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

    Joined:
    Sep 24, 2004
    Occupation:
    Plumber
    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. Sponsor

    Sponsor Paid Advertisement

     
  4. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    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.
     
  5. toolaholic

    toolaholic General Contractor Carpenter

    Joined:
    Jul 16, 2005
    Occupation:
    Repairing and remodeling homes
    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
     
  6. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    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.
     
  7. toolaholic

    toolaholic General Contractor Carpenter

    Joined:
    Jul 16, 2005
    Occupation:
    Repairing and remodeling homes
    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 Wet venting options and a toilet connection question May 15, 2015
Plumbing Forum, Professional & DIY Advice Exceptions to horizontal venting under floor? Apr 27, 2015
Plumbing Forum, Professional & DIY Advice Venting a small bath with AAV - is that ok? Apr 16, 2015
Plumbing Forum, Professional & DIY Advice Seeking clarification on venting requirements. Apr 5, 2015
Plumbing Forum, Professional & DIY Advice Adding Shower to 1/2 Bath - drain and venting Feb 21, 2015

Share This Page