Chapter 19.14
PLUMBING CODE Revised 10/18

Sections:

19.14.010    Uniform Plumbing Code adopted. Revised 10/18

19.14.010 Uniform Plumbing Code adopted. Revised 10/18

(a)    The Uniform Plumbing Code, 2015 Edition, published by the International Association of Plumbing and Mechanical Officials (IAPMO), is expressly referred to and adopted as the plumbing code of the city, and by this reference and adoption made a part of this chapter as if fully set forth herein, save and except those specific deletions, amendments, and additions made in subsection (b) of this section. One copy of said Uniform Plumbing Code shall be filed and kept in the office of the city clerk.

(b)    The following provisions designated “deletion” are deleted and excepted from, and the following provisions designated “addition” are added to, and the following provisions designated “amendment” are amendments to the provisions of the Uniform Plumbing Code so as to be and become part of the plumbing code of the city as so amended:

(1)    Amendment. Section 312.6, Freezing protection, of the U.P.C. shall be amended in its entirety to read as follows:

Water, soil, and waste pipes shall not be installed outside of a building, in attics or crawl spaces, concealed in outside walls, or in any other place subjected to freezing temperature unless adequate provisions are made to protect such pipes from freezing by insulation or heat or both.

Exterior water supply system piping installed in trenches on private property shall be installed at a minimum of 6 inches below the frost line established at 32 inches (38 inches to top of pipe). A 48-inch bury is recommended for worst-case conditions and will meet Ketchikan Public Utilities Water Division (KPU) standards for installation in the right of way and the installation of fire hydrants on private property.

Exceptions:

1. Less than 36-inch bury will require 2-inch thick by 24-inch wide rigid Dow Styrofoam Hi-60 extruded polystyrene, Owens Corning Foamular 600 extruded polystyrene insulation, or equal.

2. Less than 28-inch bury will require two layers of 2-inch rigid foam with lapped seams.

3. Less than 18-inch bury will require two layers of 2-inch rigid foam with self-regulating heating cable with waterproof jacket such as Raychem 6-watt/ft. Winterguard Wet, or equal. It is further required that two inch bedding material be placed between the rigid foam and heat cabled pipe. Article 426 and 427 of the 2008 edition of the National Electrical Code requires the self-regulating heating cable must be ground fault equipment protected on each heating cable branch circuit.

4. Overland, rock face surface, or under dock installations are allowed under the following conditions: The pipe must be heat traced with Raychem or equal heating cable to the KPU demark. The pipe must be insulated with a minimum 1-1/8 inch OD closed cell urethane such as Armstrong AP Armaflex 2000 pipe insulation, or equal, with weather resistant protective finish.

5. If other than type K, annealed copper tubing will be used, the tubing or pipe must be approved for use, be installed to the manufacturer’s specifications, and be equal to the requirements as stated in exceptions 1, 2, 3, and 4. Specifications must be provided and approved by the building official or Ketchikan Public Utilities Engineering Department.

Installation details are available at the KPU Water Division Engineering Department located at 2930 Tongass Avenue, Ketchikan, Alaska 99901.

(2)    Amendment. Table 422.1, Minimum Plumbing Facilities, of the U.P.C. shall be amended in its entirety to read as follows:

TABLE 422.1

MINIMUM PLUMBING FACILITIES,2,3,7,9,10

GENERAL

Each building shall be provided with sanitary facilities, including provisions for persons with disabilities as prescribed by the city. Table 422.1 applies to new buildings, additions to a building, and changes of occupancy or type in an existing building resulting in an increased occupant load. Plumbing fixtures shall be provided for the type of building occupancy with the minimum numbers as shown in Table 422.1. The numbers of fixtures are the minimum required as shown in Table 422.1 and the occupant load factors shall be as shown in Table 422.1.

EXCEPTION: Where circumstances dictate that a different ratio is needed, the adjustment shall be approved by the building official.

TABLE 422.1 MINIMUM PLUMBING FACILITIES1 

TYPE OF OCCUPANCY2

WATER CLOSETS

(FIXTURES PER PERSON)3

URINALS (FIXTURES PER PERSON)4

 

LAVATORIES (FIXTURES PER PERSON)5,6

BATHTUB OR SHOWERS

(FIXTURES PER PERSON)

DRINKING FOUNTAINS/ FACILITIES (FIXTURES PER PERSON)

OTHER

A-1 Assembly occupancy (fixed or permanent seating) – theatres, concert halls and auditoriums

Male

1: 1-100

2: 101-200

3: 201-400

Female

1: 1-25

2: 26-50

3: 51-100

4: 101-200

6: 201-300

8: 301-400

Male

1: 1-200

2: 201-300

3: 301-400

4: 401-600

Male

1: 1-200

2: 201-400

3: 401-600

4: 601-750

Female

1: 1-100

2: 101-200

4: 201-300

5: 301-500

6: 501-750

1: 1-250

2: 251-500

3: 501-750

 

1 service sink or laundry tray

Over 400, add 1 fixture for each additional 500 males and 1 fixture for each additional 125 females.

Over 600, add 1 fixture for each additional 300 males.

Over 750, add 1 fixture for each additional 250 males and 1 fixture for each additional 200 females.

Over 750, add 1 fixture for each additional 500 persons.

A-2 Assembly occupancy – restaurants, pubs, lounges, night clubs and banquet halls

Male

1: 1-50

2: 51-150

3: 151-300

4: 301-400

Female

1: 1-25

2: 26-50

3: 51-100

4: 101-200

6: 201-300

8: 301-400

Male

1: 1-200

2: 201-300

3: 301-400

4: 401-600

Male

1: 1-150

2: 151-200

3: 201-400

Female

1: 1-150

2: 151-200

4: 201-400

1: 1-250

2: 251-500

3: 501-750

1 service sink or laundry tray

Over 400, add 1 fixture for each additional 250 males and 1 fixture for each 125 females.

Over 600, add 1 fixture for each additional 300 males.

Over 400, add 1 fixture for each additional 250 males and 1 fixture for each additional 200 females.

Over 750, add 1 fixture for each additional 500 persons.

A-3 Assembly occupancy (typical without fixed or permanent seating) – arcades, places of worship, museums, libraries, lecture halls, gymnasiums (without spectator seating), indoor pools (without spectator seating)

Male

1: 1-100

2: 101-200

3: 201-400

Female

1: 1-25

2: 26-50

3: 51-100

4: 101-200

6: 201-300

8: 301-400

Male

1: 1-100

2: 101-200

3: 201-400

4: 401-600

Male

1: 1-200

2: 201-400

3: 401-600

4: 601-750

Female

1: 1-100

2: 101-200

4: 201-300

5: 301-500

6: 501-750

1: 1-250

2: 251-500

3: 501-750

1 service sink or laundry tray

Over 400, add 1 fixture for each additional 500 males and 1 fixture for each additional 125 females.

Over 600, add 1 fixture for each additional 300 males.

Over 750, add 1 fixture for each additional 250 males and 1 fixture for each additional 200 females.

Over 750, add 1 fixture for each additional 500 persons.

A-4 Assembly occupancy (indoor activities or sporting events with spectator seating) – swimming pools, skating rinks, arenas and gymnasiums

Male

1: 1-100

2: 101-200

3: 201-400

Female

1: 1-25

2: 26-50

3: 51-100

4: 101-200

6: 201-300

8: 301-400

Male

1: 1-100

2: 101-200

3: 201-400

4: 401-600

Male

1: 1-200

2: 201-400

3: 401-750

Female

1: 1-100

2: 101-200

4: 201-300

5: 301-500

6: 501-750

1: 1-250

2: 251-500

3: 501-750

1 service sink or laundry tray

Over 400, add 1 fixture for each additional 500 males and 1 fixture for each additional 125 females.

Over 600, add 1 fixture for each additional 300 males.

Over 750, add 1 fixture for each additional 250 males and 1 fixture for each additional 200 females.

Over 750, add 1 fixture for each additional 500 persons.

A-5 Assembly occupancy (outdoor activities or sporting

events) – amusement parks, grandstands and stadiums

Male

1: 1-100

2: 101-200

3: 201-400

Female

1: 1-25

2: 26-50

3: 51-100

4: 101-200

6: 201-300

8: 301-400

Male

1: 1-100

2: 101-200

3: 201-400

4: 401-600

Male

1: 1-200

2: 201-400

3: 401-750

Female

1: 1-100

2: 101-200

4: 201-300

5: 301-500

6: 501-750

1: 1-250

2: 251-500

3: 501-750

1 service sink or laundry tray

Over 400, add 1 fixture for each additional 500 males and 1 fixture for each additional 125 females.

Over 600, add 1 fixture for each additional 300 males.

Over 750, add 1 fixture for each additional 250 males and 1 fixture for each additional 200 females.

Over 750, add 1 fixture for each additional 500 persons.

B Business occupancy (office, professional or service type transactions) – banks, vet clinics, hospitals, car wash, banks, beauty salons, ambulatory health care facilities, laundries and dry cleaning, educational institutions (above high school), or training facilities not located within school, post offices and printing shops

Male

1: 1-50

2: 51-100

3: 101-200

4: 201-400

Female

1: 1-15

2: 16-30

3: 31-50

4: 51-100

8: 101-200

11: 201-400

Male

1: 1-100

2: 101-200

3: 201-400

4: 401-600

Male

1: 1-75

2: 76-150

3: 151-200

4: 201-300

5: 301-400

Female

1: 1-50

2: 51-100

3: 101-150

4: 151-200

5: 201-300

6: 301-400

1 per 150

1 service sink or laundry tray

Over 400, add 1 fixture for each additional 500 males and 1 fixture for each additional 150 females.

Over 600, add 1 fixture for each additional 300 males.

Over 400, add 1 fixture for each additional 250 males and 1 fixture for each additional 200 females.

E Educational occupancy – private or public schools

Male

1 per 50

Female

1 per 30

Male

1 per 100

Male

1 per 40

Female

1 per 40

1 per 150

1 service sink or laundry tray

F1, F2 Factory or Industrial occupancy – fabricating or assembly work

Male

1: 1-50

2: 51-75

3: 76-100

Female

1: 1-50

2: 51-75

3: 76-100

Male

1: 1-50

2: 51-75

3: 76-100

Female

1: 1-50

2: 51-75

3: 76-100

1 shower for each 15 per- sons exposed to excessive heat or to skin contamina-tion with poisonous, infectious or irritating material.

1: 1-250

2: 251-500

3: 501-750

1 service sink or laundry tray

Over 100, add 1 fixture for each additional 40 persons.

Over 100, add 1 fixture for each additional 40 persons.

Over 750, add 1 fixture for each additional 500 persons.

I-1 Institutional occupancy (houses more than 16 persons on a 24-hour basis) – substance abuse centers, assisted living, group homes, or residential facilities

Male

1 per 15

Female

1 per 15

Male

1 per 15

Female

1 per 15

1 per 8

1 per 150

1 service sink or laundry tray

I-2 Institutional occupancy – medical, psychiatric, surgical or nursing homes

Hospitals and nursing homes – individual rooms and ward room

1 per room

1 per room

1 per room

1 per 150

1 service sink or laundry tray

1 per 8 patients

1 per 10 patients

1 per 20 patients

Hospital Waiting or Visitor Rooms

1 per room

1 per room

1 per room

Employee

Use

Male

1: 1-15

2: 16-35

3: 36-55

Female

1: 1-15

3: 16-35

4: 36-55

Male

1 per 40

Female

1 per 40

Over 55, add 1 fixture for each additional 40 persons.

I-3 Institutional occupancy (houses more than 5 people)

Prisons

1 per cell

1 per cell

1 per 20

1 per cell block/floor

 

Correctional facilities or juvenile center

1 per 8

1 per 10

1 per 8

1 per floor

1 service sink or laundry tray

Employee

Use

Male

1: 1-15

2: 16-35

3: 36-55

Female

1: 1-15

3: 16-35

4: 36-55

Male

1 per 40

Female

1 per 40

1 per 150

Over 55, add 1 fixture for each additional 40 persons.

I-4 Institutional occupancy (any age that receives care for less than 24 hours)

Male

1: 1-15

2: 16-35

3: 36-55

Female

1: 1-15

3: 16-35

4: 36-55

Male

1 per 40

Female

1 per 40

1 per 150

1 service sink or laundry tray

Over 55, add 1 fixture for each additional 40 persons.

M Mercantile occupancy (the sale of merchandise and accessible to the public)

Male

1: 1-100

2: 101-200

3: 201-400

Female

1: 1-100

2: 101-200

4: 201-300

6: 301-400

Male

0: 1-200

1: 201-400

Male

1: 1-200

2: 201-400

Female

1: 1-200

2: 201-300

3: 301-400

1: 1-250

2: 251-500

3: 501-750

1 service sink or laundry tray

Over 400, add 1 fixture for each additional 500 males and 1 fixture for each 200 females.

Over 400, add 1 fixture for each additional 500 males.

Over 400, add 1 fixture for each additional 500 males and 1 fixture for each 400 females.

Over 750, add 1 fixture for each additional 500 persons.

R-1 Residential occupancy (minimal stay) – hotels, motels, bed and breakfast homes

1 per sleeping room

1 per sleeping room

1 per sleeping room

1 service sink or laundry tray

R-2 Residential occupancy (long-term or permanent)

Dormitories

Male

1 per 10

Female

1 per 8

1 per 25

Male

1 per 12

Female

1 per 12

1 per 8

1 per 150

1 service sink or laundry tray

Add 1 fixture for each additional 25 males and 1 fixture for each additional 20 females.

Over 150, add 1 fixture for each additional 50 males.

Add 1 fixture for each additional 20 males and 1 fixture for each additional 15 females.

Employee

Use

Male

1: 1-15

2: 16-35

3: 36-55

Female

1: 1-15

3: 16-35

4: 36-55

Male

1 per 40

Female

1 per 40

Over 55, add 1 fixture for each additional 40 persons

Apartment house/unit

1 per apartment

1 per apartment

1 per apartment

1 kitchen sink per apartment. 1 laundry tray or 1 automatic clothes washer connection per unit or 1 laundry tray or 1 automatic clothes washer connection for each 12 units

R-3 Residential occupancy (long-term or permanent in nature) for more than 5 but does not exceed 16 occupants

Male

1 per 10

Female

1 per 8

Male

1 per 12

Female

1 per 12

1 per 8

1 per 150

1 service sink or laundry tray

Add 1 fixture for each additional 25 males and 1 fixture for each additional 20 females.

Add 1 fixture for each additional 20 males and 1 fixture for each additional 15 females.

R-3 Residential occupancy (one and two family dwellings)

1 per one and two family dwelling

1 per one and two family dwelling

1 per one and two family dwelling

1 kitchen sink and 1 automatic clothes washer connection per one and two family dwelling

R-4 Residential

occupancy (residential care or assisted living)

Male

1 per 10

Female

1 per 8

Male

1 per 12

Female

1 per 12

1 per 8

1 per 150

1 service sink or laundry tray

Add 1 fixture for each additional 25 males and 1 fixture for each additional 20 females.

Add 1 fixture for each additional 20 males and 1 fixture for each additional 15 females.

S-1, S-2 Storage occupancy – storage of goods, warehouse, aircraft hanger, food products, appliances

Male

1: 1-100

2: 101-200

3: 201-400

Female

1: 1-100

2: 101-200

3: 201-400

Male

1: 1-200

2: 201-400

3: 401-750

Female

1: 1-200

2: 201-400

3: 401-750

1: 1-250

2: 251-500

3: 501-750

1 service sink or laundry tray

Over 400, add 1 fixture for each additional 500 males and 1 fixture for each additional 150 females.

Over 750, add 1 fixture for each additional 500 persons.

Over 750, add 1 fixture for each additional 500 persons.

Notes:

1The figures shown are based on one fixture being the minimum required for the number of persons indicated or any fraction thereof.

2A restaurant is defined as a business that sells food to be consumed on the premises.

    (a) The number of occupants for a drive-in restaurant shall be considered as equal to the number of parking stalls.

    (b) Hand-washing facilities shall be available in the kitchen for employees.

3The total number of required water closets for females shall not be less than the total number of required water closets and urinals for males.

4For each urinal added in excess of the minimum required, one water closet shall be permitted to be deducted. The number of water closets shall not be reduced to less than two-thirds of the minimum requirement.

5Group lavatories that are 24 lineal inches (610 mm) of wash sink or 18 inches (457 mm) of a circular basin, where provided with water outlets for such space, shall be considered equivalent to one lavatory.

6Metering or self-closing faucets shall be installed on lavatories intended to serve the transient public.

7Occupant loads over 30 shall have one drinking fountain for each 150 occupants.

8Drinking fountains shall not be installed in toilet rooms.

9When the design occupant load is less than 10 persons, a facility usable by either sex may be approved by the building official.

10Any category not mentioned specifically or about which there are any questions shall be classified by the building official and included in the category which it most nearly resembles, based on the expected use of the plumbing facilities.

(3)    Amendment. Section 1208.1 of the U.P.C. shall be amended by the addition of Section 1208.1.2, Piping system requirements, which shall read as follows:

In addition to the requirements of this code for gas piping, the facilities and piping for use with liquefied petroleum gas shall meet the following requirements:

1. Liquefied petroleum gas piping shall not serve any gas fired appliance located in a pit or basement where heavier than air gas might collect to form a flammable mixture.

2. Pipe joint compounds used on threaded connections shall be insoluble in liquefied petroleum gas.

3. Every valve and appurtenance used on such piping shall be designed and approved for use with liquefied petroleum gas.

4. Relief valves shall discharge to the exterior of the building into the air and shall be located at least five feet horizontally away from any opening into a building that is below the discharge opening.

(Ord. 1879 § 1, 2018)