Chapter 13.04
FIRE PROTECTION WATER SYSTEMS

Sections:

ARTICLE I. GENERAL REQUIREMENTS

13.04.010  Conformance required.

13.04.020  Commercial and small residential lots.

ARTICLE II. WATER MAINS

13.04.030  Diameter--Residential areas.

13.04.040  Diameter--Mercantile and manufacturing districts.

13.04.050  Feeder-line diameter.

13.04.060  Gridiron looping of water mains.

ARTICLE III. FIRE HYDRANTS IN RESIDENTIAL AREAS

13.04.070  Specifications.

13.04.080  Connecting lines.

13.04.090  Spacing.

13.04.100  Gate valves.

13.04.110  Flow available.

ARTICLE IV. FIRE HYDRANTS IN COMMERCIAL AREAS

13.04.120  Specifications.

13.04.130  Connecting lines.

13.04.140  Spacing.

13.04.150  Gate valves.

13.04.160  Flow and pressure.

ARTICLE I. GENERAL REQUIREMENTS

13.04.010 Conformance required.

Where land is developed under subdivision or land-division laws, for residential or commercial purposes, the development shall conform to the minimum standards set out in this chapter. (Ord. 179 §1(part), 1971)

13.04.020 Commercial and small residential lots.

Lots one acre or less in size for residential use and lots or parcels for commercial use, regardless of size, shall have fire protection water systems complying with the American Insurance Association minimum standards adopted for residential areas and/or mercantile and manufacturing (commercial) districts. (Ord. 179 §1(1), 1971)

ARTICLE II. WATER MAINS

13.04.030 Diameter--Residential areas.

Water mains in residential areas shall not be less than six inches in diameter. (Ord. 179 §1(2), 1971)

13.04.040 Diameter--Mercantile and manufacturing districts.

Water mains in mercantile and manufacturing districts shall not be less than eight inches in diameter. (Ord. 179 §1(3), 1971)

13.04.050 Feeder-line diameter.

No feeder line, or main, from the water source, or supply, in residential or commercial areas shall be less in diameter size than the main which it serves. (Ord. 179 §1(4), 1971)

13.04.060 Gridiron looping of water mains.

Water main, in residential or commercial areas, shall be looped into a gridiron system to avoid deadends. Eight-inch and larger lines are excepted. (Ord. 179 §1(5), 1971)

ARTICLE III. FIRE HYDRANTS IN RESIDENTIAL AREAS

13.04.070 Specifications.

Fire hydrants in residential areas shall have two two-and-one-half-inch National Standard thread male outlets, with caps and chains, which shall be of dry-barrel, breakaway design, with a full four-and-one-half-inch valve opening. (Ord. 179 §1(6), 1971)

13.04.080 Connecting lines.

Lines connecting residential area hydrants to main water lines shall not be less than six inches in diameter, except as provided in this chapter. (Ord. 210(part), 1976: Ord. 179 §1(7), 1971)

13.04.090 Spacing.

Hydrant spacing in residential areas shall not be greater than three hundred feet via a public street or road. However, for an individual homeowner building upon his own lot, if recommended by the fire commissioner, the city council then will consider the necessity of installing a fire hydrant. The city may issue a variance to an individual homeowner building on his own lot as to distance if the city council determines it to be in the best interest of the city. If the city council determines that an individual homeowner should pay for the installation of a fire hydrant, the city will do the work, and the homeowner will pay the expense of the installation, which shall include the main line tee, the guard valve, the runner, the hydrant and the labor. If a six-inch main line is available, the city may, at its discretion, install the hydrant at city expense. In no event will the city install at its expense any main-line water extension. (Ord. 226 §1(a), 1979: Ord. 210(part), 1976: Ord. 179 §1(8), 1971)

13.04.100 Gate valves.

Gate valves not less than six inches in diameter shall be installed between every residential area fire hydrant and the main line. Where gate valves on main lines, will permit main-line or hydrant repairs with out eliminating full water flow to more than one hydrant, nc valve between the main line and hydrant will be required. (Ord. 179 §1(9), 1971)

13.04.110 Flow available.

Water source and/or storage, for residential fire protection, shall provide for an uninterrupted water flow, for a sustained period of at least two hours, of the minimum flow requirements as set forth in city Resolution 21-78. (Ord. 226 §1(b), 1979: Ord. 179 §1(10), 1971)

ARTICLE IV. FIRE HYDRANTS IN COMMERCIAL AREAS

13.04.120 Specifications.

Fire hydrants in mercantile and manufacturing districts shall have two two-and-one-half-inch National Standard thread male outlets, with caps and chains, and one four-and-one-half-inch steamer outlet, with cap and chains, and with a full four-and-one-half-inch valve opening, and shall be of dry-barrel, breakaway design. (Ord. 179 §1(11), 1971)

13.04.130 Connecting lines.

Lines connecting commercial-area fire hydrants to main water lines shall not be less than six inches in diameter. (Ord. 179 §1(12), 1971)

13.04.140 Spacing.

Hydrant spacing in commercial areas shall not be greater than three hundred feet via public road, street or parking area. (Ord. 179 §1(13), 1971)

13.04.150 Gate valves.

Gate valves not less than six inches in diameter shall be installed between every commercial-area fire hydrant and the main line. Where gate valves on main lines will permit main-line or hydrant repair without eliminating full water flow to more than one hydrant, no valve between the hydrant and the main line will be required. (Ord. 179 §1(14), 1971)

13.04.160 Flow and pressure.

Water source and/or storage for commercial areas shall provide for an uninterrupted water flow, and residual pressure of twenty pounds per square inch, as specified in city of Angels Resolution 21-78. At times of peak demand, residual pressure and minimum gallonage per minute shall be maintained over and above the normal consumptive use for a minimum duration of two hours. (Ord. 226 §1(c), 1979: Ord. 179 §1(15), 1971)