Drain Stack Configuration Question
I am about to get started on my plumbing for the basement project. This will begin with plumbing the drains for the dishwasher/sink with disposal, washer, and vanity/lav drain.
Please reference my novice sketch and let me know your opinions.
(What I am looking for is wether the "stack" order I have drawn is adequate)
Thank you in advance.
If those are all dumping into the same vertical piping, what you have there is called a wet vent. I'm not sure if that's allowed in your area, but it sure as heck isn't allowed where I live. (UPC Based code)
Then again, your drawing is somewhat incomplete... hard to tell exactly what you plan on doing.
Thats a major over a minor. The washing machine pumps alot of water fast. Dont install a major over a minor.
So, let me get what you are saying correctly... Are you suggesting that I have the following setup?
(from top down)
A: Vanity/Lav drain (minor)
B: Kitchen sink/dishwasher drain (major)
C: Washer drain (major)
Ps. Alan, I plan to use Air Admittance Valve (AAV) to vent my kitchen and vent my washer and vanity out the air vent pipe (which I believe is 2").
I think you need to clarify: are these all dumping into one main stack drain on the same floor?
If so, what distances are each of these from the main stack? Why can't you re-vent to avoid wet venting?
Give us a little bit more of an idea of what is going on.
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