venting multiple fixtures...

Discussion in 'Remodel Forum & Blog' started by coach606, Jun 10, 2006.

  1. coach606

    coach606 New Member

    Apr 25, 2006
    I'm remodeling my attic and I'm trying to design the DWV system right now. The attic is unfinished space.

    I'm going to have two sinks, a toilet, and a freestanding tub (probably a cast iron tub or a lighter version of the same). I was going to run the drain lines from the two sinks together, meet up with the tub drain line, then hook up with the toilet line (3") as it drops verticall in a wall on the floor below this bathroom.

    I'm going to use Y or T/Y combos to tie the lines together and to tie into the main stack in the basement. I was planning to run a vent line vertically in the wall behind each sink and I guess run it inside the wall all the way around the bathroom so that I can create a vent line behind the toilet as well.

    I'm unsure how to vent the tub as there is no wall behind where the drain will be. Windows will be there. Should I just go for an AAV? They are allowed by code in my area? Should I just use AARV's all the way? I could put one inside the vanity of each sink fixture and have easy access to it and save a lot of time. Then maybe I can just run a vent line up from the toilet through the roof.

    And maybe someone can give me an idea for venting the tub. I've drawn up some plans, but I'm not a great artist and considering how many different angles you need to see to make sense of this, I don't think I'll post it.

    Anyone have a photo of how bathroom DWV lines are planned in a similar layout?

  2. geniescience

    geniescience Homeowner

    Nov 27, 2005
    humid summers hot, humid winters cold
    do you think tubs need venting close to their p-traps? How far away can a vent be, for a 1.5" pipe? If the drain line is sloped at 1/4" per foot, I think you can safely vent into it 4 or 5 feet away. From what I know or remember.

    What say the plumbers?
  3. Sponsor

    Sponsor Paid Advertisement

Similar Threads: venting multiple
Forum Title Date
Remodel Forum & Blog Venting sink and shower on saniflo ?'s Feb 6, 2017
Remodel Forum & Blog Venting a saniswift pump... Nov 21, 2016
Remodel Forum & Blog Looking For Advice on Waste/Venting for Remodel. May 21, 2016
Remodel Forum & Blog Bathroom remodel with wall hung toilet. Need advice on plumbing and venting. Mar 10, 2014
Remodel Forum & Blog Draining/Venting Tips Needed Aug 20, 2012

Share This Page