I finally finished with the drain, vent and conduit piping. It turned out to be a bit more then I anticipated, but since I've never done a home with 7 toilets before, I should have guessed as much.
In the photo, there's five toilets and vents lined up on a four in line that runs straight through with a clean-out angled up.
Next to that is a four inch line for the HVAC system.
Then there's the three inch line for the showers, sinks, laundry and two toilets in my home.
It was bad enough figureing out where all the drains had to go, but putting vents in the walls really gave me a headache.
In the background you can see my Dad on the backhoe digging a trench for a sewer line for his RV when they are visiting. Before he could dig the trench, I had to build a pad for them to park on. Now I found out I'm short one 4 inch tee to run the line, so another trip to the store.