I've been lurking about here for a few weeks, and have learned a lot about drainage and venting. I have attached a drawing of my proposed drainage system for my basement. The biggest question i have is on the double wye fitting where the shower, sink and toilet drain join up. Is there any problem with the using the double wye here. The toilet is vented through a wet vent via the sink drain. Techinally it seems to be wet vented through the shower drain as well. Any other comments or observations are appreciated as well.
Thanks in advance.
Thanks in advance.