We are working on a single floor, single tenant project with several fixture group assignments. The floor public fixtures are treated as public fixtures, but there are a number of exam rooms where each room has its own toilet, urinal, and lavatory. Due to the nature of the exams, the users will invariably utilize the lavatory. We are treating the lavatories in the exam rooms as private lav faucets. The design case calls for a metered .5 gpm faucet @ 20 second time = .17 gpc.
Question - Since the private lav faucet pulldown does not show metered faucet, should we select "ultra low flow" - 2.2 gpm x 30 sec, or "other", and show a metered 2.2 gpm faucet @ 20 second time = .73 gpc? I am inclined to use the latter, but I would like to get some feedback to see if we are on the right track.