If I said that I completely understand what is going on in the basement, I would be lying. This isn't good because I am usually adept at these things. I guess the best I can do now is describe what is going on in the pics. The first pic is a view to the south of the basement. Past the water heater is where there will be a connection to our laundry and the vent stack. To the right of the water heater is an existing floor drain.