1. The roughin is I believe 2" PVC. Can I tie in the three sinks you see in the picture to the one drain/vent? Will this work or do I need a separate vent for each sink?
2. The dotted line represents the proposed horizontal run. As long as I keep the pipe sloping downward to the rough-in, can I make the 90 deg. turn?
3. It is a deep pour basement, so I have to use 10' lumber. Due to the cost, I don't want to overbuy/build. With the pipe(dotted line) running through it, do these walls need to be 2x4, 2x6, or double 2x4 with the pipe running in between? If I do go with something over single 2x4, how do you handle the door jam thickness? Most pre-hung doors seem to have thinner than 6" jams.
4. I have a stub for the shower. I want to do the walls in ceramic. I am going back and forth between prefab fiberglass shower pan and doing a mortar bed/freeform shower base. Is the mortar bed style way over the head of a pretty handy homeowner?
Thanks for your help. I'm hoping to start this this weekend, so wish me luck!