Adding a bar sink

plumbit

I’d like to add a par sink to a room. I have a 2” abs line comings though the floor with a 2x1.5x1.5 twye that picks up a vanity. I was wondering if I could cut in below it with a wye with an 45 to pick up a new bar sink. And back vent the bar sink. Or does it need to be a twye? I’m in Ontario Canada thanks 

Jamie Hall

That would depend entirely on your local plumbing code. Could be either.

hot_rod

Use a san tee, like this, below the lav tee