The main stack in the house I just bought is cast, everything leading up to it has been replaced with PVC. I'd like to replace the stack with PVC as well, since I'm adding a basement washer/dryer, and plan to add a sink and toilet as well. I figure since I have to cut it up anyway, replace it all and get rid of all the adapters in there.
It's probably the simplest setup I've ever seen. It's a ranch, stack is right below bathroom. Toilet sits on top, sink appears to run into the vent pipe, and kitchen sink and tub are on a line coming in as well. I'm just wondering how far down I can/should cut the pipe. I don't want to get into tearing out concrete right now, so something above floor level. It has a cleanout right at the floor, should I cut below or leave that and cut right above it? Like I said, I want to add a toilet down there at some point, so I need to be able to Y into it as low as possible. Here are some pics. Any/all help and advice is appreciated!