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Step #1:
Use this form to determine peak flow capacity. DO NOT include fixtures handled by city pressure (lower floors).
Fixture
Occupancy
Load Fixture Units
Number of Fixtures
Total
Bathroom Group F.V.
Private
8
Bathroom Group F.T.
Private
6
Bathtub Immersion
Public
20
Water Closet F.V.
Public
10
Water Closet F.T.
Public
5
Urinal Pedestal F.V.
Public
10
Urinal Stall or Wall
Public
5
Lavatory
Public
2
Kitchen Sink
Public
4
Service Sink
Public
3
Garbage Disposal, Sink
Public
3
Clothes Washer
Private
2
Clothes Washer
Public
4
Dishwasher
Public
6
Drinking Fountain
Public
2
Steam Tables
Public
1
3/4 Conn.
Public
6
Select
Public
Private
Select
Public
Private
Select
Public
Private
TOTAL FIXTURE FLOW UNITS=
Step #2:
After determining the Total Fixture Flow Units, convert to Gallons per Minute Load.
Peak Flow (GPM)
Fixture Flow Units
APT. OFFICE
HOTEL
HOSPITAL
100
70
80
100
300
80
90
100
600
100
100
120
900
120
125
135
1200
135
145
155
1500
150
165
185
1750
170
185
200
2000
190
200
220
3000
250
275
300
Step #3:
Calculate Total Peak Load (GPM)
Fixture Load
Planned Extra Service
TOTAL PEAK LOAD
Enter this amount in TOTAL PEAK LOAD field on Domestic Booster Pump Design Guide
