Originally Posted by bglover
So my toilet will go directly into the waste stack. The shower can drin into that same line and can does not require a dry vent. The lav sinks will tie into the same waste line as the toilet by 6" 8"? downhill from it's last trun twards the waste stack using a y. If I tie the shower drain into the lav drian 8" before the Y to the toilet will that vent the shower?
I hope this makes some sence. New language for me. I understad that all Y's must go in the direction of the flow. Do I use 1 1/2" pipe (PVC) for the lav and shower and 3" for the toilet.