Because you are installing one our new eco-urinals that just use a pint of water to flush. Have a pint, give a pint, right? I've talked about them before, and today they were installed so we can pour concrete right up to them.
As the planning proceeds for the first floor concrete we have to deal with the fact that the center of the building has settled about four inches over the past hundred years. A ramp here and a ramp there should do the trick.