upc

I live in an old house and had to gut the old bathroom and plumbing to it (because it was done horribly wrong and lots of rotten wood needed repaired as well). This is the layout of the new bathroom, with the main drain line coming from the top of the picture (behind the sink/shower): This...

Hi all, I am planning on putting a bathroom in my basement however the house only has a single 2" vent pipe going into the master bathroom upstairs and I want to branch off of that vent, run it down to the basement and use it for the new bathroom. Please see the attached image for my current...

Debated on separating these as multiple posts, but here goes: - Can i get away with installing a flat kitchen sink island with a loop vent. I have seen construction details showing this but the top of the loop doesn't (and can't) reach above the top of the sink - What is considered an...

Hi all, I am designing my DWV for basement bathroom and bar sink/powder room. I'm hoping to apply for permits within the next 2 weeks. We are under 2021 UPC and 2021 IBC. In the bar sink and powder room area, I am trying to figure out how to place my upper terminal cleanout to keep a clean...

Hello! I'm a DIYer planning out our basement remodel. I'm trying to get everything all laid out before filing for permits. Location is Spokane County, WA. Code is UPC. I'm currently working on the DWV layout. I am trying to figure out the best layout for the drain system. It will all be...

In the picture below, can the tub/shower and toilet be wet vented through the vanity drain after entering the stack? This is under UPC in CT. Thanks!

Hi, the water line in my house is 1.25” after the pressure regulator (Larger from the street). For what it’s worth, the water heater is 1”. The house has 4.5 bathrooms. 2 people unless we have guest. I’m planning to buy go with a clack softener. My understanding from UPC is that I should use a...

I'm trying to find in the UPC the right section to deal with a step or drop in a standard 4" sewer line, where the usual 1/4" per foot can't be maintained. I'm aware that making the entire line sloped steeper can cause problems with solids, but that a drop can solve the problem. What's the...

I'm converting a small home office space in my house into a second bathroom for my mom. There's only one configuration possible for the fixtures in the space and only one non-structural partition wall through which I can run a 2" vent up from the crawlspace. The 3" building drain runs...

Hi all, hope everything is going well. This is in WA state. I am adding a 9' x 3' full bathroom and stacked washer/dryer to a finished space above the garage. I have attached the layout of the space and my proposed plan for waste lines and vents. Is the venting I have adequate (or...

Two questions. If I’m using 3” for toilet run and 3” vent run, what is the longest run trap to vent for that toilet? 2nd question. Can a lavatory 2.5” run into the 3” toilet run before it connects to wet vent? I have tried to outline this in the diagram. Appreciate all the help, this has me...

Hello, this forum has been exceedingly helpful for me. One question I have as I rough in a basement bathroom, is whether the following double vanity rough in layout is acceptable. I drew my understanding of the traditional layout that I would prefer (Option A), but due to the space constraint...

I am grateful for your consideration. Is configuration A or B compliant with the UPC? I'm pretty sure A is but have doubts on B. If both are compliant, which would you prefer? Thanks!

Hi, I have a 1-story, 2 bathroom home where originally my master bathroom and guest bathroom toilets were facing back to back with a shared double sanitary tee connection and 2" vertical vent pipe to the roof. Now I have relocated my master bathroom toilet approximately 12 ft away and my...

Been looking through the forums a lot, and hoping to get some help and opinions. In Hawaii under the UPC. I have a remodel planned to add a shower to a small bathroom. This will require reorganizing the fixtures, because both bathrooms are very small. The plumbing setup currently is pretty...

Hello, This form is awesome so thanks for that. I am remodeling my 1938 1 1/2 story in MN and adding a bathroom with a Lav, WC and Shower. I've been going around in circles trying to get the plumbing for this bath figured out. I finally might have a solution but wanted to get some feedback if...

A plumber suggested to me today that a "Euro style" unvented combination washer-dryer might not meet code under Minnesota's amended UPC. Can anyone confirm whether the UPC or specifically MN code disallows such appliances?

Hello, I own a home in Seattle (which uses the UPC) built in 1991. I bought this home from the original owner who had the house built. I am currently remodeling my master bathroom. While working below in my garage under the master, after opening up a ceiling rafter bay, I spied a 2" ABS...