TABLE 403.1 MINIMUM NUMBER OF REQUIRED PLUMBING FIXTURES (See Sections ...

NO. CLASSIFICATION

1 Assembly (see Sections 403.2 , 403.5 and 403.6 )

OCCUPANCY A-1 A-2 A-3

A-4 A-5

TABLE 403.1 MINIMUM NUMBER OF REQUIRED PLUMBING FIXTURES

(See Sections 403.2 and 403.3 )

DESCRIPTION WATER CLOSETS (URINALS SEE SECTION 419.2 )

LAVATORIES

MALE

FEMALE

MALE

FEMALE

Theaters usually with fixed seats and other buildings for the performing arts and motion pictures

Nightclubs, bars, taverns, dance halls and buildings for similar purposes

Restaurants, banquet halls and food courts

1 per 125 1 per 40 1 per 75

1 per 65 1 per 40 1 per 75

1 per 200 1 per 75 1 per 200

Auditoriums without permanent seating, art galleries, exhibition halls, museums, lecture halls, libraries, arcades and gymnasiums

1 per 125

1 per 65

Passenger terminals and transportation facilities

1 per 500

1 per 500

Places of worship and other religious services. Churches without assembly halls

1 per 150

1 per 75

Coliseums, arenas, 1 per 75 for the

skating rinks, pools first 1,500 and 1

and tennis courts for per 120 for the

indoor sporting events remainder

and activities

exceeding 1,500

1 per 40 for the first 1,500 and 1

per 60 for the remainder

exceeding 1,500

Stadiums, amusement parks, bleachers and grandstands for outdoor sporting events and activities

1 per 75 for the first 1,500 and 1 per 120 for the

remainder exceeding 1,500

1 per 40 for the first 1,500 and 1

per 60 for the remainder

exceeding 1,500

1 per 200

1 per 750 1 per 200 1 per 200 1 per 150 1 per 200 1 per 150

BATHTUBS/ SHOWERS

DRINKING FOUNTAIN

(SEE SECTION

410.1 )

OTHER

--

1 per 500

1

service

sink

--

1 per 500

1

service

sink

--

1 per 500

1

service

sink

--

1 per 500

1

service

sink

--

1 per 1,000 1

service

sink

--

1 per 1,000 1

service

sink

--

1 per 1,000 1

service

sink

--

1 per 1,000 1

service

sink

2 Business (see Sections 403.2 , 403.5 and 403.6 )

B

Buildings for

1 per 25 for the first 50 and 1 per 50 1 per 40 for the first 50 and 1

--

1 per 100 --

the transaction of

for the remainder exceeding 50

per 80 for the remainder

business,

exceeding 50

professional services,

other services

involving

merchandise, office

buildings, banks, light

industrial and similar

uses

3 Educational

E/D

Educational facilities

1 per 50

1 per 50

--

1 per 100

1

service

sink

4 Factory and industrial

F-1 and F-2

Structures in which occupants are

engaged in work fabricating, assembly

or processing of products or materials

1 per 100

1 per 100

(see Section 411 )

1 per 400

1

service

sink

NO. CLASSIFICATION OCCUPANCY DESCRIPTION

WATER CLOSETS (URINALS SEE SECTION 419.2 )

MALE FEMALE

LAVATORIES BATHTUBS/ DRINKING

SHOWERS FOUNTAIN

(SEE

SECTION

MALE FEMALE

410.1 )

OTHER

5 Institutional

I-1

Residential care

1 per 10

1 per 10

1 per 8 1 per 100

1 service sink

I-2

Hospitals, ambulatory

1 per room c

nursing home

patients b

1 per room c

1 per 15 1 per 100 1 service sink per floor

Employees, other

1 per 25

1 per 35

--

1 per 100

--

than residential care

b

Visitors, other than

1 per 75

1 per 100

--

1 per 500

--

residential care

I-3

Prisons b

1 per cell

1 per cell

1 per 15 1 per 100

1 service sink

I-3

Reformitories,

detention centers,

and correctional

centers b

1 per 15

1 per 15

1 per 15 1 per 100

1 service sink

I-4

Adult daycare and

childcare b

1 per 15

1 per 15

1 per 15 d 1 per 100

1 service sink

6 Mercantile (see Sections

M

Retail stores, service

1 per 500

1 per 750

--

1 per 1,000

--

403.2 , 403.5 and 403.6 )

stations, shops,

f,g

salesrooms, markets

and shopping centers

7 Residential

R-1 Hotels, motels, boarding houses

1 per guestroom

1 per guestroom

1 per

--

guestroom

1 service sink

8 Storage (see Sections 403.2 and 403.4 )

(transient)

R-2 Dormitories, fraternities, sororities and boarding houses (not transient)

1 per 10

1 per 10

1 per 8 1 per 100

1 service sink

R-2 Apartment house

1 per dwelling unit 1 per dwelling unit 1 per dwelling -- 1 kitchen sink per dwelling

unit

unit; 1 automatic clothes

washer connection per 20

dwelling units e

R-3 One- and two-family 1 per dwelling unit 1 per dwelling unit 1 per dwelling -- 1 kitchen sink per dwelling

dwellings

unit

unit; 1 automatic clothes

washer connector per

dwelling unit e

R-4 Residential care/assisted living facilities

1 per 10

1 per 10

1 per 8 1 per 100

1 service sink

S-1

Structures for the

S-2

storage of goods,

warehouses,

storehouse and

freight depots. Low

and Moderate

Hazard.

1 per 100

1 per 100

See Section 1 per 1,000 411

1 service sink

TABLE 604.5 MINIMUM SIZES OF FIXTURE WATER SUPPLY PIPES

FIXTURE

MINIMUM PIPE SIZE (inch)

Bathtubs a (60" x 32" and smaller

?

Bathtubs a (larger than 60" x 32")

?

Bidet

3/ 8

Combination sink and tray

?

Dishwasher, domestic a

?

Drinking fountain

3/ 8

Hose bibbs

?

Kitchen sink a

?

Laundry, 1, 2 or 3 compartments a

?

Lavatory

3/ 8

Shower, single head a

?

Sinks, flushing rim

?

Sinks, service

?

Urinal, flush tank

?

Urinal, flush valve

?

Wall hydrant

?

Water closet, flush tank

3/ 8

Water closet, flush valve

1

Water closet, flushometer tank

3/ 8

Water closet, one piece a

?

NO. OF FIXTURE UNITS FLUSH TANK

WC b

18

19-55 --

56-58 -

86-225 --

226-350 --

351-550 --

551-640 --

641-1340 --

TABLE 603.1

MINIMUM WATER SERVICE SIZE a

DIAMETER OF RECOMMENDED METER APPROX. PRESSURE LOSS NO. OF FIXTURE UNITS

WATER PIPE c

SIZE (inches) d

METER + 100' PIPE (psi) e FLUSH VALVE WC b

?

5/ 8

1

1

1

1

1?

1

1?

1

1?

1?

1?

1?

2

1?

2

1?

2

2

2

2

2?

2

2?

2

3

3

3

3

30

--

30

--

30

9

30

--

30

10-20

30

--

30

21-77

30

--

30

78-175

30

--

30

176-315

30

--

30

316-392

22

--

22

393-940

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