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WATER SUPPLY AND Dlb i HIBUTION <br />r <br />h mm TABLE 6.4 <br />2 15 Water Supply Fixture Units (WSFU) and Minimum Fixture Branch Pipe Sizes' <br />20 <br />25 Minimum <br />Fixture Branch Private Public <br />Appliances, Appurtenances or Fixtures' Pipe Size" <br />Bathtub or Combination Bath/Shower (fill) .................................. 1/2- Z X 4.0 8 4.0 <br />3/4" Bathtub Fill Valve........................................................... 3/4" -"A' 10.0 <br />Bidet............................................................................................. 1/2- 1.0 <br />Clotheswasher............................................................................. 1/2- 9X 4.0 <br />Dental Unit, cuspidor.................................................................... 1/2' <br />Dishwasher, domestic .................................................................. 1/2' L X i.5 <br />Drinking Fountain or Watercooler................................................. 112' 0.5 <br />HoseBibb..................................................................................... 1/2" 1 )( 2.5 <br />Hose Bibb, each additional'.......................................................... 1/2' 1.T <br />Lavatory.......................................................... <br />Lawn Sprinkler, each head ............................. <br />Mobile Home, each (minimum) ....................... <br />..................... 1/2' b tt n <br />1.0 <br />Sinks <br />Bar............................................................................................ <br />1/2' <br />ClinicFaucet.............................................................................. <br />1/2- <br />Clinic Flushometer Valve........................................................... <br />with or without faucet............................................................. <br />1' <br />Kitchen, domestic...................................................................... <br />1/2- <br />Laundry..................................................................................... <br />1/2' <br />Service or Mop Basin................................................................ <br />1/2- <br />Washup, each set of faucets ..................................................... <br />1/2' <br />Shower, per head......................................................................... <br />1/2'. <br />Urinal, 1.0 GPF Flushometer Valve .............................................. <br />3/4' <br />Urinal, greater than 1.0 GPF Flushometer Valve ......................... <br />3/4' <br />Urinal, flush tank........................................................................... <br />1/2' <br />Washfountain, circular spray ........................................................ <br />3/4' <br />Water Closet, 1.6 GPF Gravity Tank ............................................ <br />1/2' <br />Water Closet, 1.6 GPF Flushometer Tank ................................... <br />1/2- <br />Water Closet, 1.6 GPF Flushometer Valve .................................. <br />1- <br />Water Closet, greater than 1.6 GPF Gravity Tank ........................ <br />1/2' <br />Water Closet, greater than 1.6 GPF Flushometer Valve .............. <br />1- <br />ca 14.0 <br />Table 6-4 <br />Assembly' <br />1.0 <br />3 <br />1.5 <br />0.5 0.75 <br />2.5 <br />/ <br />1.0 <br />1.0 1.0 <br />1.0 <br />2.0 <br />3.0 <br />6.01.5 <br />13 <br />3 <br />1.5 <br />3.0 <br />2.0 <br />S <br />2.0 <br />Foatnolo ' <br />Footnote ' <br />2.0 <br />3.0 <br />4.0 <br />2.5 <br />3.5 <br />2.5 <br />3.5 <br />3.0 5.5 7.0 <br />See Footnote ' <br />Notes: C- r <br />Size of the cold branch pipe, or both the hot and cold branch pipes. <br />Appliances, Appurtenances or Fixtures not included in this Table may be sized by reference to fixtures having a <br />similar flow rate and frequency of use. <br />' The listed fixture unit values represent their load on their cold water service. The separate cold water and hot water <br />fixture unit value for fixtures having both hot and cold water connections may each be taken as three-quarter ( 3/4) <br />of the listed total value of the fixture. <br />The listed minimum supply branch pipe sizes for individual fixtures are the nominal (I.D.) pipe size. <br />' For fixtures or supply connections likely to impose continuous flow demands, determine the required flow in gallons <br />per minute (GPM) and add it separately to the demand (in GPM) for the distribution system or portions thereof. <br />' Assembly [Public Use (See Table 4.1)), <br />When sizing flushometer systems see Section 610.10. <br />' Reduced fixture unit loading for additional hose bibbs as used is to be used only when sizing total building demand <br />and for pipe sizing when more than one hose Bibb is supplied by a segment of water distributing pipe. The fixture <br />branch to each hose bibb shall be sized on the basis of 2.5 fixture units. <br />101 <br />