wet vent

I inherited a small mess that I am cleaning up. The basement washing machine and utility sink wet vent into a 1-1/2" riser that goes thru the concrete slab, w/ an AAV -- I am stuck with that situation (these were installed by a plumber for the previous owner.) I don't know the DFU but if not...

Looking for some feedback on a bathroom drain system that I am knee deep in -> I am building a large detached garage in Washington state with an upstairs living area which includes a bathroom (lavatory, toilet and shower). After many hours of reading this forum and the UPC, I've ran through...

Have a question regarding a DWV system a plumber installed in a new build for me which utilizes a wet vent. Apologies for the crude drawing which does not accurately show length, but schematically it is correct. Key information: 1) PVC DWV System on 2nd story and spans 2 rooms. Bathroom and...

Hi everyone, Doing a plumbing drain job for a friend. We're trying to do a wet vent setup with one sink on the left, cleanout at the top, and a wall hung toilet on the right. The toilet is downstream of the wet vent 2" line you see coming from the sink on the left. The main drain is a 3"...

I'm replumbing an existing basement bathroom that doesn't have vents. Does this diagram look right? 1. Can I add a shower vent to the end of the 3" main horizontal waste line just beyond where the 2" shower line meets it? Is this to code? 2. If the sink is vented, do I even need to add a...

Hello all, I'm building a new bathroom in my house on a homeowner's permit. I'm planning to use a wet vent with a lavatory, bath tub, then toilet, in that order from upstream to downstream. So the vent will come up through the ceiling in the wall behind the lavatory. I was planning to use...

Hi Guys, Just want to say that this forum has certainly helped my knowledge quite a bit on plumbing codes here in Ontario. My questions relate to the wet venting for a toilet and shower for a 1st floor bathroom master reno add. It mainly pertains to the vertical drop allowance for the...

Greetings, Great forum. I'm in the midst of a basement bathroom reno. According to what I found on this forum and elsewhere I can wet vent the WC via a 2" pipe running to the sink if the toilet trap arm is within 72" of the vent. Now, is that distance to the vertical portion of the vent, or...

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...

Hey All, I have an old house where I am adding a 1st floor half bath, and laundry. I am looking to Wet Vent the toilet with a 2'' sink drain. Upon descending in to the basement this 2'' wet vent will have to turn 90 degrees to point out from the wall, then an use an additional (3) street 45's...

One thing I'm having a hard time finding information on is how to properly connect fixture drains to a wet vent. So many diagrams I see in books and online show a wet vent setup where fixture trap arms dump into the wet vent at a downward 45° angle. This doesn't make any sense to me. Isn't this...

We are in the middle of a bathroom renovation and wanted to check in on whether the existing plumbing is installed correctly. We've uncovered some interesting things and bad shortcuts that were done over the years in this house and aren't sure if the current bathroom plumbing needs to be added...

I am looking for some assistance on how to correctly vent the bathroom I am putting into a basement. Below are some pictures of what I am proposing. Is this correct?

Sometimes you work on an older home that's been plumbed a few times. Last year I had replaced a tub for the home one door down from this one. A 60's home with some cast and some ABS. The existing waste to the toilet had the wrong grade on it. We decided to flip the tub drain location, fix the...

Hey guys, thanks for the forum, it has helped me countless times. We have a question about wet venting. Every image in the plumbing codes we can find shows an offset toilet when wet venting. We want to know if there is any issue with connecting to a line directly underneath of the toilet. It...

What size trap arm/drain is required for a tub/shower that has a trap arm length of 30"? The trap arm has 1.5 p-trap, runs 30" and dumps into stack. This line does not have its own vent, it is vented by the 4" stack. Reading 908.2 of 2006 UPC states, "Each wet-vented section shall be a...

I'm trying to get through plumbing rough-ins in a renovation of my old house, and am trying to understand why my inspector won't allow this horizontal wet vented bathroom group. Specifics: Have to follow 2015 MN Plumbing Code (UPC). No 2" trap arm that joins the wet vent portion of the drain...

Hi All, first time posting here but I've learned so much just browsing as a non-member. Thanks to Terry Love for hosting this site! Hope I won't be banned for life after this extended post! :-). Can anyone firm-up my knowledge of wet venting, specifically in King Co. WA (Seattle)? I think...

How does this set up look as far as venting the shower? Lower left is a long sweep 3 inch soil stack from upstairs bathroom above (vented straight out the roof on second floor). The 3 inch horizontal run drops vertically into the basement where it ties in to the cast iron (to the upper right)...

So I've been doing a full remodel of our bathroom given water damage from the last owners. I've gone down to the joists & studs. Now I'm looking at drainage/venting solutions. I've got a few plumbers coming by in the next few weeks, but wanted to get a broader range of opinions. I have a single...