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Thank you for the mark-up—very helpful! And all understood. Ah yes, sorry. The third vent comes from the basement utility sink, catches the kitchen sink on the way through the 1st floor, and then links up over the bathroom fixture vents before the merge to the stack vent. I appreciate the help...

Good to know—thanks for this info @Reach4 ! I will be able to make that 2" to 3" transition on the vent pipe more than 12" from the roof and in an insulated space.

Thanks for the reply, Wayne! Got it, yeah I had wondered about that side inlet since it kinda looks like there's a sharp ledge on the inside and not a gradually sloped down surface as you'd like to see for drainage. Let me see if I'm following what you're saying: On the 3x3x2 combo wye (like...

Hello. I'm a DIYer working on an old house bathroom renovation project. The attached image/drawing is my current plan (sorry, some of the spatial relationships are a bit wonky on my isometric drawing). Any big no-nos happening here? My main hang up right now is wondering if I can use this...

Hi @MNplmbr51 -- Ahh yes, that makes sense now. I was looking another version of this chart in the 2020 MN Plumbing Code (pages 27–28) and I think I see where I misinterpreted some info. Thanks for clarifying!

Thanks for the responses @Breplum and @wwhitney -- Got it, that all makes sense. Will plan for this :)

Not a plumber. Homeowner/DIYer doing research. I'm looking at digging a trench for a sewer line for a garage and connecting it to main sewer line in my house. There's a part of the Minnesota plumbing code that I'm a bit confused about. I'm trying to figure out what they mean by "expansion...