Page 357 - Facility Piping Systems Handbook for Industrial, Commercial, and Healthcare Facilities

SITE UTILITY SYSTEMS

SITE UTILITY SYSTEMS 6.79

TABLE 6.25 Quantities of Sewage Flow (Continued )

Wastewater flow, gallons per
day per unit
Source Unit Range Typical
Commercial sources

Airport (per passenger) 4 3–5
Automobile service station Vehicle services 7.9–13.2 10.6
Employee 9.2–15.8 13.2
Bar & cocktail lounge Customer 1.3–5.3 2.1
Employee 10.6–15.8 13.2
Bowling Alley (per alley) 20 16–26
Bowling Alley (per sq. ft.) 0.256 GPD
Hotel Guest 39.6–58.0 50.1
Employee 7.9–13.2 10.6
Industrial building (excluding Employee 7.9–17.2 14.5
industry and cafeteria)
Laundry (self-service) Machine 475.0–686 580.0
Wash 47.5–52.8 50.1
Motel Person 23.8–39.6 31.7
Motel with kitchen Person 50.2–58.1 52.8
Office building Employee 7.9–17.2 14.5
Restaurant Meal 2.1–4.0 2.6
Restaurant (per seat) 40 32–48
Rooming house Resident 23.8–50.1 39.6
Service area, roadway
Counter seat 350 265–420
Table seat 175 150–210
Store, department Toilet room 423.0–634 528.0
Employee 7.9–13.2 10.6
Sq. ft 0.22 GPD
Shopping center Parking space 0.5–2.1 1.1
Employee 7.9–13.2 10.6
Sq. ft 0.160 GPD
Institutional and recreational sources

Hospital, medical Bed 132.0–351.0 250.0
Employee 5.3–15.9 10.6
Hospital, mental Bed 79.3–172.0 106.0
Employee 5.3–15.9 10.6
Prison Inmate 79.3–159.0 119.0
Employee 5.3–15.9 10.6
Rest home Resident 52.8–119.0 92.5
Employee 5.3–15.9 10.6
School, day:
With cafeteria, gym, Student 15.9–30.4 21.1
showers
With cafeteria only Student 10.6–21.1 15.9
Without cafeteria, gym, Student 5.3–17.2 10.6
showers
School, boarding Student 52.8–106.0 74.0
Resort Person 52.8–74.0 58.1
Barber shop Chair 55
Beauty parlor Chair 250

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