Don't know about this case.
But in Chicago they were installed in buildings with copper drain pipes, required by the city's code. The undiluted urine rotted out the pipes and the urine drained directly into the walls and eventually out onto floors.
I wonder why they use copper instead of cast iron, I have pulled copper drains out of old buildings but I did not know that it was required anywhere.
I tried to call some commercial plumbers in Chicago but couldn’t find the names of any, the service guy that I spoke to is in the suburbs and doesn’t keep up with that kind of thing.