IPC Ch4: WC 1.6 gpf max (1.28 where required), urinals 0.5 gpf, lav 0.5 gpm, kitchen 1.8 gpm, shower 2.0 gpm. ADA: 18in centerline, 17-19in seat, grab bars, 60in turning. Min fixture counts per Table 403.1 by occupancy.