The plumbing fixtures selected were similar to both restrooms. The only difference is a urinal in the men’s bathroom. Thanks to the geometry and spatial distribution in the building, I could easily copy the same system elements and their correspondence piping to every level.

The cold water pipe and the hot water pipe are 1” pipes, and the sanitary line is a 4” pipe.

Before the pipe design, I have the restrooms mirror to each other. This configuration does not allow me to connect the sanitary pipe to the toilet, so I have to move one of the toilets up in the floor plan to match the tube correctly.