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  1. G

    Residential DWV Layout Questions

    Here is a picture of what the horizontal branches look like in the basement and the connections. I’m planning running the W/M drain down from the 2nd story and attaching it to the 3” branch in the basement located to the right which is downstream of the 1st floor kitchen sink (common vented...
  2. G

    Residential DWV Layout Questions

    Jeff, I will plan on re-routing the W/M drain. Could I run the most upstream LAV's drain (the one that currently Wyes into W/M drain) to the 3'' horizontal drain where the W/M currently connects instead of the W/M? Thanks.
  3. G

    Residential DWV Layout Questions

    What are my options if I cannot vent the toilet? If I find another route for the W/M connection then the downstream toilet is properly wet vented?
  4. G

    Residential DWV Layout Questions

    Here is the picture of the downstream toilet drain and unused lav drain next to it. Could vent the toilet by tying into this? Also there is a short wall to the right of the toilet drain that I might could run a vent through. Also, doesn’t the W/M drain need to be 3” when another fixture drain...
  5. G

    Residential DWV Layout Questions

    Thank you for the feedback Jeff. That makes sense. There is an unused lav to the left of the toilet that has a 1 1/2” vent that connects to the main 3” stack (I didn’t include it in the drawing). I might could tie into that? I’ll take a picture today and see what you think. Thank you.
  6. G

    Residential DWV Layout Questions

    I added a more detailed drawing which is hopefully easier to see the full layout of things. I have a basement so if I need to create a vertical drain for the W/M through a wall and tie in at the basement level I can. I would consider this last resort, but it would likely be easier than tying in...
  7. G

    Residential DWV Layout Questions

    Hi Jeff, thank you for your helpful responses. I may have to re think some things then. Tying the W/M drain in near the stack as you recommended will be very difficult due to many factors. The most upstream bathroom group is wet vented by the lavs that has a 2” vent through the roof. The W/M...
  8. G

    Residential DWV Layout Questions

    Sorry, the sketch is not complete. The upstream toilet and tub is being wet vented by 2 lavs that are not shown on the top picture. I just drew out the horizontal plumbing under the floor and nothing else. The washing machine has a 2” common vent going through the roof that it shares with the...
  9. G

    Residential DWV Layout Questions

    Hi Jeff, are you saying the Washing machine drain is negatively affecting the went venting of the bathroom upstream of it or downstream of it? Also, I’m trying to figure out which dry vent you are referring to. I have a post on this forum called wet venting where I drew the layout. It is a...
  10. G

    Residential DWV Layout Questions

    First off, I want to thank everyone for their help with my plumbing layout thus far. I've learned so much from you all. We are currently renovating our upstairs and adding a new laundry room, 1 full bathroom group for kids, and 2 lavs, and a soaker tub to the master bathroom. I am writing this...
  11. G

    Bathroom Wet Vent?

    Thank you both for your help. Having separate trap arms would definitely complicate things because some work has already been done (holes in joists) and the vent pipe has already added through the roof where I have the vent originally drawn. I believe my distances comply w/ the IPC code the...
  12. G

    Bathroom Wet Vent?

    Hi Whitney, I added a second picture that modifies the plumbing layout based off advice received from Wayne. I also Added a another possible option that reduces the amount of angles/turns, but not sure if the layout is still properly wet venting in the option #2. There are 3 joists that the...
  13. G

    Venting Bathroom Addition

    Awesome, thank you for your help!
  14. G

    Venting Bathroom Addition

    Hi Jeff, I added a top down view (pic 5) to make sure that the layout will still work for wet venting the bathtub by the most upstream lav. I am also not sure what pvc fitting to use when connecting the new 1 1/2” vent perpendicular to the existing 1 1/2” vent that is located in the attic...
  15. G

    Venting Bathroom Addition

    Hi Reach, I looked over page 12 and got the gist of things, but had a few questions. In the example on page 12 the lav drain runs vertically down into a 1/8th bend that changes directions directly into the main horizontal run. My drawing is a little different in that the lav drain/vent runs...
  16. G

    Venting Bathroom Addition

    Thank you for your helpful answer, Reach. Yes, good point. I should change the 1 1/2'' lav drain connection to a 2'' line from the most upstream lav. So is the soaker tub technically wet vented by the most upstream lav in the setup I have drawn? I may use an AAV for the most downstream lav like...
  17. G

    Venting Bathroom Addition

    I have updated my original post to ask more of a specific question. I tried looking for any forum rules on bumping a post so I am sorry if there is a better way to do this.
  18. G

    Bathroom Wet Vent?

    Hi, I made a sketch for a wet vent layout for a bathroom with 2 lavs (double vanity), tub/shower, and Waste closet. Would this layout work? Anything changes that would be recommended? Thank you. Edit: Added a second picture that modifies the plumbing layout based off advice received. Added a...
  19. G

    Venting Bathroom Addition

    I would tie into the vent stack or the unused lav vent line.
  20. G

    Venting Bathroom Addition

    Hi John, I am adding 2 lavs and a soaker tub. The existing shower is staying a shower. The only thing that is not going to stay is where the old lav used to be to the left of the waste closet. I might need to draw a better sketch or take some pictures.
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