basement bath venting question

[Knightzach]

I’m a amateur finishing my basement and have a question about the vent pipe for my full bath.

Do I have to connect my vent pipe to my sink, toilet, and shower drain pipes or can I just run it off the sink drain pipe to vent all three? It’s a 2” pipe on the sink and I’m getting different answers from everyone I ask.

Any help would be much appreciated!

 

[CT-18]

There are a number of different variables, how is the piping run, what is your local code. There is no one answer unless a lot of info is given. A picture of the current piping arrangement would be a great starting point. That's why you are getting different answers from different people.