7.6.1.6.Flushing Devices

(1) Flushing devices that serve water closets or urinals shall have sufficient capacity and be adjusted to deliver at each operation a volume of water that will thoroughly flush the fixture or fixtures they serve. (2) Where a manually operated flushing device is installed, it shall serve only one fixture. (3) Except as provided in Sentence (4), water closets and urinals shall have an integral means of limiting the maximum amount of water used in each flush cycle to that specified in Table 7.6.1.6.-A. (4) In buildings classified as Group C occupancy, the flush cycle for each fixture that is a water closet or urinal shall not exceed the maximum water used in each flush cycle listed for that fixture in Table 7.6.41.6.-B. (4.1) Sentences (3) and (4) do not apply to a fixture located in an existing building where the chief building official is satisfied that compliance with the requirement is impracticable because of maintenance or operational difficulties. (See Note A- 7.6.1.6.(4.1)) (5) Flush-tank-type urinals shall be equipped with a device capable of preventing flush cycles when they are not in use. Table 7.6.1.6.-A Water Usage per Flush Cycle Forming Part of Sentence 7.6.1.6.(3) Fixtures Maximum Water Usage per Flush Cycle, LPF Water Closet (Tank Type) 6.0 Water Closet (Direct Flush) 6.0 Urinal (Tank Type) 1.9 Urinal (Direct Flush) 1.9 Table 7.6.1.6.-B Water Usage per Flush Cycle for Sanitary Fixtures in a Group C Occupancy Forming Part of Sentence 7.6.1.6.(4) Fixtures Maximum Water Usage per Flush Cycle, LPF Water Closet (Tank Type) 4.8(1) Water Closet (Direct Flush) 4.8 Urinal (Tank Type) 1.9 Urinal (Direct Flush) 1.9 Notes to Table 7.6.1.6.-B: (1) Water closets which provide a dual flush cycle option of both 4.1 LPF or less and 6.0 LPF are deemed to comply.