dwv

  1. James Borjas

    Can DWV vent be shared between shower and washer?

    Hi all - longtime lurker but first time poster. I am redoing my bathroom and trying to set up a plan for the DWV lines for a standing shower and stackable washer-dryer, which are side by side (30" wide each, with a 5" framed wall dividing them). I am unsure how to properly lay out the vent...
  2. TheOverThinker

    Solid ABS ASTM D-2661 for use above the roofline for DWV vents?

    In my area I can only find ASTM F-628 Foam core pipe, not ASTM D-2661 solid ABS pipe. Given that, what material can I use for roof penetrations, that will hold up in the sun? I see a lot of roofs with ASTM F-628 foam core pipe vents, where after a few years the vent look chalky and sun damaged...
  3. TheOverThinker

    How can I tell if a roof drain waste vent is no longer connected below?

    I have a 1.5" galvanized plumbing vent that comes up out of a wall.... yet there's nothing obviously below it. The other vents all match up to fixtures below... this one not so much. This is a 1926 home, two story, stucco, lathe and plaster. How can I determine where it goes, and if it's...
  4. ShellyJ123

    Preparing for our Rough In Test

    we decided to DIY our plumbing in our new addition. We had a little experience but nothing prepared us for this big a task. We are getting ready for the rough-in inspection and capping all the drains and flanges. We put this sanitary tee with cleanout at the bottom of the waste stack where it...
  5. Arvydas

    DWV in home on slab

    I recently bought a house built with all of the plumbing in the slab and did a whole remodel. It was a bank owned property built in the 50s, and needless to say I ran into quite a few head scratchers. As far as plumbing, I replaced all fixtures and traps. In doing so, I noticed that the only...
  6. Layla-Gail O'Brien

    Because I just have to do things oddly...

    *Storytime* :D For my family; I manage a 38-acre, private, saltwater lake property on the Intercoast of Texas with fishing & camping for a membership fee. Except, people don't want to come camping because we don't have a proper 'Bath House' just an accessible 1/2-bath restroom. I looked into...
  7. Ajmicek

    Access to capped DWV

    Hello! So I moved into a house with a closet that used to be a laundry room. Back wall of the closet has a hole in the sheetrock where the washing machine outlet box used to be. In that hole: a capped DWV (and I assume supply lines, but I haven't opened the wall). I'm doing work in this wall...
  8. John McGowen

    DWV vent tee location

    I have been reading about plumbing codes and methods on this site for many years and I learned a lot but I still don't know everything so I must ask a question. I have removed all the cast iron DWV parts so everything will be PVC. I am also installing a full bathroom and seperate floor drain...
  9. Ipeakedinhighschool

    How does this DWV bathroom setup look? Awesome?

    Will this get the job done? I tried to keep it simple since I am simple. let me know if I botched something up. Thanks!
  10. Ipeakedinhighschool

    Creative waste pipe hookup to main...thoughts?

    I have a cramped system. In short, i have a 3" horizontal main. First it does a combination wye up to vertical (this vertical stack is packed full) it then continues horizontal and almost immediately goes into a 45 degree cleanout. I want to cut off the cleanout and attach a sanitary t at...
  11. Phil P.

    Basement bath DWV review

    Good morning all .. I'm back to TL for a quick (hopefully) consult on replumbing a basement bathroom. Tore out an old 1950 bath and all the cast-iron involved. THAT is a good day's work and really makes me appreciate the craftsmanship (and muscle strength) of the plumbing trade in 1950...
  12. Zane Bridgers

    Water Supply Line Crossing Under Sewer Line

    Hey folks, Had a question come up about the main water supply line crossing below the main sewer line. The situation is as follows: Sewer line to septic is 3" PVC @ 18" depth coming through the foundation. Water supply line is 1 1/4 250 PSI Poly @ 5' depth and crosses under the sewer at ~45*...
  13. ngmtl

    Venting Problems - How to Diagnose Positive vs. Negative Pressure

    From what I understand, it's generally safe to say that gurgling from a drain signals a venting issue. I'm looking for ideas to help diagnose which of two possibilities is in play. Feel free to suggest other possibilities that I have not considered. Possibility 1 - Negative pressure but with...
  14. Simon Groce

    Critique my DWV diagram

    Thanks for all the great advice over the years!
  15. Luke Reeves

    Can I start a vent off a wye, after P-Trap? Drawing included

    Is it OK to start a vent off the 45 side of a wye? I don't see why it wouldn't but couldn't find an example of my situation on the internet, See attached drawing (sorry it's rotated wrong), Originally I was going to put a sani-tee after the trap arm start and start the vent with a 45 from the...
  16. mradel

    Plumbing question with our residential basement remodel

    My plumber says the height of the drain from the kitchen above is correct. Maybe I’m over-thinking the height but I think it should be 12″ from the floor not 32″ as shown in the picture on the left hand side. My concern the bathroom sink drain is below the kitchen drain. Is he right?
  17. Kevin71246

    45 PVC elbow vent only?

    I see tons of questions about a 90 being vent only (short sweep), but can't find anything about a 45. Is there a 45 elbow that's for a vent only, and not drain? In the attached screenshot, I'm wondering if the bottom 2 are for vent only? If not, what's the difference between the top 2 and the...
  18. thegorilla

    Moving lav sink & adding laundry above - help with DWV

    Hi all, thanks for the great resource! I've searched a lot but can't find an answer to my situation. Will my attached plan be functional and up to code if I open up my slab and tie into my 4" closet bend after the closet vent? Any ideas on the best way to route the drain once it goes under the...
  19. ropinheels

    DWV drop under joist

    On a 3" horizontal run, can I use a 22.5 fitting to drop under a floor joist and then correct it with another 22.5? Or is this considered changing from horizontal to verticle? The 22.5 degree slope would only be about 7" long but it will carry a bathroom group and kitchen sink with disposal...
  20. jbrevik

    Correct DWV design?

    Hello folks, Long time lurker, first time poster here. I am trying to come up with a design for the DWV system and could use some feedback. I plan on taking the proposal to the city building inspector before I start putting it together, but my experience so far is that they rubber stamp...
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