Can I have a bath sink and a garage utility sink draining into a 1.5" drain?
Photo #2 is looking the opposite way as photo #1.
I'm rethinking my garage utility sink install. I posted a question about 2 weeks ago concerning that. Have another question. Attached are two photos of my main stack in basement. The 1.5" I have labeled in red is showing the drain for a 1st floor bath sink that eventually ties into the 2" before the stack.
In photo #2, the garage is on the other side of the wall to the left of photo.
In photo #1, can I connect the garage utility sink drain to the 1.5" that is horizontal right above the I-Beam(using a wye)?
Or do I have to extend the 2" a little and cut in a 2 x 2 x 1.5 wye where the run of the wye would pick up the existing bath sink and the tap of the wye would pick up the garage utility?
As a note I will be using an AAV to vent the garage utility and the length of 1.5" shown in the basement photo is about 14 feet. Then there is probably another 5 feet of 1.5" in the wall to the bath sink.