40
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Link
Heat
Demand load of fixtures
Fixture
Occupancy
Type of Supply
Control
Fixture Units
Cold
Hot
Total
WC
Public
Flush valve
10.00
10.00
WC
Public
Flush tank
5.00
5.00
Urinal
Public
1" flush valve
10.00
10.00
Urinal
Public
3⁄4" flush valve
5.00
5.00
Urinal
Public
Flush tank
3.00
3.00
Lavatory
Public
Faucet
1.50
1.50
2.00
Bath
Public
Faucet
3.00
3.00
4.00
Shower
Public
Mixing valve
3.00
3.00
4.00
Basin
Office
Faucet
2.25
2.25
3.00
Kitchen sink
Hotel, restaurant
Faucet
3.00
3.00
4.00
Drinking fountain
Office
3⁄8" valve
0.25
0.25
WC
Private
Flush valve
6.00
6.00
WC
Private
Flush tank
3.00
3.00
Basin
Private
Faucet
1.00
1.00
1.50
Bath
Private
Faucet
1.50
1.50
2.00
Shower
Private
Mixing valve
1.50
1.50
2.00
Kitchen sink
Private
Faucet
1.50
1.50
2.00
Laundry tray
Private
Faucet
2.25
2.25
3.00
Dishwasher
Private
Faucet
1.00
1.00
Washing machine
8lbs
Private
Automatic
1.50
1.50
2.00
Washing machine
8lbs
Public or general
Automatic
2.25
2.25
3.00
Washing machine
16lbs
Public or general
Automatic
3.00
3.00
4.00
Demand Load of Fixtures
Definition of Terms
Fixture Unit: The demand imposed by a number of fixtures used intermittently cannot
be determined exactly, so each fixture is given a factor known as a fixture unit which
corresponds to a demand in GPM. Note: for the purposes of this book the fixture unit is
used only to determine the size of distribution pipe required; it is not necessary to know the
corresponding GPM.
Note:
fixture unit information supplied from general code book info.
Please check with your local codes to confirm.
