1. Q

    Adding Vent to Laundry Standpipe

    Hi, I have a restricted trap below my laundry standpipe that can no longer handle the spin cycle output of my washing machine. It is the original installation from 1962; a 2" cast iron pipe goes below the concrete floor to a buried trap. Several times over the last 15 years I was able to...
  2. G

    Two 1-1/2" vents serving where a 2" vent is required

    I'm venting a bathroom group (sink, toilet, bath/shower) and the rough in location ended up placed directly below a truss, which means I can't take the 2" vent directly up and out. I'm working with a 2x4 stud wall and need to bore through several and make a turn to avoid the truss. Is it...
  3. Brian Kehlmeier

    Maximum vent length for new addition

    I am hoping that I can get some advice... New addition to the first floor; relocating the bathroom and adding a shower. In the end, a bathroom group (5 DFU) and a utility sink (2 DFU) will be vented. I want to route the vent to the attic and tie in up there, but I am not sure that I can. The...
  4. C

    Attic Vent System up to code?

    Greetings, I’m pretty sure this vent system is to code but, I’m a rookie and still learning ALOT so I figured I’d throw it out there and see if anyone sees something wrong? - It’s for 2 bathroom sinks, 2 toilets, 1 shower, 1 washing machine and a 1 kitchen sink. - All the branches are sloped...
  5. Thinly9172

    Outdoor drainage and softener backwash questions

    I have a heated outbuilding/workshop where I am planning to install a water treatment system for my drilled well. The slab on grade outbuilding has a floor drain, intended for water softener backwash. The floor drain empties 4' underground about 20' away from the building. There is no drain...
  6. J

    Overflow Drain Issue

    Hello, we recently spent a year remodeling a home built in 99. We didn’t really use any of the plumbing fixtures prior to moving in but after moving in and starting to use some of the plumbing fixtures, we noticed there soap suds coming out of both a downstairs half bath sink and the upstairs...
  7. V

    fire resistant plumbing vent?

    Hi everyone, I need your help. I don't really know how to explain the problem and my first language is French, please be indulgent. :) I live in Quebec. My house is the first unit of a 3 unit townhouse. My two neighbor's plumbing vent are hooked on my stack vent. (please see illustration...
  8. Dvid

    Trouble with P-Trap Backdraft

    Master bathroom, two sinks. One has a backdraft of sewage smell daily, the other is fine. It's definitely not mold, but sewage. -The one that smells is used regularly, several times a day. It's not dried out. -The sink drains perfectly fine, not slow. -Smell comes when the water is hot or...
  9. J

    The 1 in a million?

    Hi there, So, I'm beginning to think that I'm experiencing a one in a million situation.... Lol. Here's what we are up against.... Hopefully SOMEONE out there has had a similar situation... We just moved in to a mobile home that was sitting vacant for 20+years. Drains were an issue from day...
  10. A

    Possible to drain through vent

    I'm looking to move my washer and add a utility sink into my garage. Can I tap into the vent line (see pic). There is a sink, toilet and shower on the opposite side of the wall. Will I have venting issues? Any help would be appreciated. I talked to a plumber last week and shared this pic and...
  11. Brendan Poirier

    Main stack vent necessary ? Garage plumbing

    Hello Just built my garage this year and am currently installing my utility sink. My original plan was to put a toilet in the garage but that was ditched. For now I will only have a sink so I am wondering if running the main stack up through the roof is necessary since the sink has its own AAV...
  12. Margarett

    Frequent and extended gurgling in our powder room sink

    We must have a partial clog in our plumbing, but we cannot determine where. We’ve been living in our house for 24 years; the house itself is about 100 years old. Even before we started experiencing our current problem w/ our first-floor sinks a little over a year ago, our powder-room sink would...
  13. quantumbass

    Venting and routing for a recovery replacement of pipes

    Hello, I had to have my original copper drain pipes pulled, and I am trying to pick up where my house was left after someone bailed on me. The short of it was that a copper 2" pipe went through the HVAC return duct right over the HVAC main stack with a failing joint there, so it was supposed to...
  14. IllinoisDIY

    Basement bathroom venting question

    I have roughed in *most* of what we should need for a basement bathroom. However, I am having issues understanding what I need from a venting perspective. We do not have easy access to a main vent stack. Unless we want to rip out walls and vent all the way up through the roof (obviously a last...
  15. MAYOR

    Basement Plumbing Venting.

    Hello, Basement bathroom setup under concrete. Please see sketch. Will the 2" vanity sink wet vent be ok to vent toilet and shower as shown. Thank you Mayor Please see sketch.
  16. PTMARC

    Kitchen sink drain vent

    I am remodeling my kitchen and have a new 10 inch deep stainless steel sink to install with a garbage disposer. The current/old sink drain is too high for the new deep sink with disposer and I am working through options to lower my stub out. The drain currently runs through the stud bays in an...
  17. Jim112

    Toilet waste pipe from attic, added to original stack, advice needed

    Would love to get more info here before I undertake costly repairs. Posted a similar qs recently but I made a mess of it, so here's another attempt Relatives added a toilet in the attic a few years ago, have had problems recently with blockages and odors - I've never seen a waste pipe added...
  18. Potatoes

    Washing machine box install - How to deal with vent obstruction

    Hello everyone. Since I had the existing drywall removed in the laundry room, I was considering installing a washing machine box. Originally the room was drywalled but it had a section missing where the washer connected and drained by the wall. This setup has been like this ever since my...
  19. Potatoes

    Kitchen sink venting?

    Hello. We recently removed drywall from water damage done to a laundry room and kitchen. Both the laundry room and kitchen are on the first level of a raised ranch home. The kitchen sink does not have vent close to the p-trap. The kitchen drain connects to the laundry room sink where there...
  20. TheOverThinker

    Repacking an inverted oakum / cast iron 4" joint on a sewer stack?

    How, and who, can still repair old oakum joints that are inverted. Situation is a 4" CI waste stack comes down from the roof above the top floor toilet in an condo. Just above the toilet, it branches downward for the tub. The walls and everything are all finished. mostly with tile. The three...
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