Water urinal with no flushometer?

[Yikes]

I have an ADA retrofit project that requires a new single accommodation restroom in lieu of trying to make existing multi-user restrooms accessible. In the name of "equivalent facilitation", we need this restroom to have a urinal as well as a WC and sink.
The problem is, most urinals have a flushometer valve - 40 fixture units - and the AHJ is requiring full forensic riser diagrams for the entire building if we add more than 20 FU.

Therefore I'm look for an alternate to a flushometer urinal. I know I can do a waterless urinal, but for sanitation reasons, the owner prefers a water urinal.

Does anyone know of a modern water urinal that has some type of tank?

 

[ICE]

Some jurisdictions require the rough plumbing to be installed for a conventional urinal along with the water-less urinal. The idea is that the stink will bother them enough to want a real urinal.

 

[Paul Sweet]

I've seen tanks for water closets that go in walls. I don't know whether they also make one for a urinal.

40 FU sounds extremely high for a fixture that only uses a gallon or less per flush. Maybe that's a California thing. The IPC says a 3/4" flushometer for a urinal is only 5 FU.

 

[Yikes]

Sorry, I stand corrected. A flushometer toilet is 40 FU, a flushometer urinal is 20 FU. Here's the link to the California Plumbing Code:
https://up.codes/viewer/california/...hapter/6/water-supply-and-distribution#610.10
It shows that a flushometer urinal has 20 FU, but if you do 5 or more urinals, then it drops down to 5 FU per urinal: