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Water System Sizing Table



Schools
Number of StudentsGallons per day requiredPeak Demand with flush valvesPeak Demand with flush tanksHOT ONLY Peak FlowHOT ONLY Gallons Per Day
1002,500603015500
2005,0009050231,200
3007,50012080301,800
40010,00015090402,400
50012,500180100503,000
80020,000250130604,800
1,00025,000300160706,000



Apartments and Mobile Home Parks
UnitsAll SoftPeak FlowHot OnlyHot Peak Flow
47202224012
59002530015
61,0003036015
61,0003036020
81,4404048026
101,8005060030
152,7007590045
203,600901,20045
305,4001101,80065
407,2001252,40075
10018,0002206,000110


To use this chart, determine if the fixtures are open to the public or are for private use.  Multiply the actual number of fixtures by the weighted value listed in the chart below.  Take the total value to the following page


Fixture
OccupancyTypeCold ValueHot ValueTotal Value
Water ClosetPublicFlush Value10-10
Water ClosetPublicFlush Tank5-5
UrinalPublic1" Valve10-10
UrinalPublic3/4 Valve5-5
LavatoryPublicFaucet1.51.52
BathtubPublicFaucet334
ShowerPublicMixing Value334
Service SinkPublicFaucet2.252.253
Kitchen SinkPublicFaucet334
Drinking FountainPublicValve0.25-.025
Dish MachineRestaurantValve-11
Laundry MachinePublic8#2.252.253
Laundry MachinePublic16#334
Water ClosetPrivateFlush Valve6-6
Water ClosetPrivateFlush Valve3-3
LavatoryPrivateFacuet0.750.751
BathtubPrivateFaucet1.51.52
Shower StallPrivateMixing Valve1.51.52
Kitchen SinkPrivateFaucet1.51.52
Laundry SinkPrivateFaucet2.252.253
DishwasherPrivateAutomatic-11
Clothes WasherPrivate8#1.51.52

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