wisconsin

I have an improperly drained kitchen sink and utility sink situation that I am cleaning up (including permits and inspections). I think that my question is specific to Wisconsin plumbing code. To the best of my knowledge, section 905.5 of the UPC explicitly allows a design like shown below...

The Kohler showroom in Wisconsin is a fun place to visit. Everything from old to new there, and a bit of Americana thrown in. Some of the stuff is in your dreams only. Let's take a little tour of the place here. A wall of this stuff. How cool? It was like stacked to the rafters in places...