So, my beautiful fiancee decided to play architect AFTER i finished the floor in the small bathroom She came up with a good idea of creating a small laundry room next to the existing bathroom. Problem is that the pipes are hard to get to and/or buried. I have a 3" PVC pipe under the toilet flange, and there looks like there is 18 to 24" of "drop" before it bends and goes into the dirt. I was brainstorming the easiest way to connect a new laundry room into my existing plumbing. How far under a toilet must you be to connect, if this is even a good idea? I've drawn a crude ms paint drawing (I forgot about the trap in the laundry, and the vent is easy.. I will just go through the attic and roof with a 2 inch pipe). The crawlspace is pretty damn tight, and this is all assuming i can get under there without ripping up my new floor. I have to go buy a plastic suit and try to crawl to this part of the house.
I also had the idea of a saniflow pump.. but that really doesn't sound right either.
Thanks for any ideas.