You are viewing an archived code
Loading...
The two and one-half-inch hose valves for the use of the fire department, as hereinbefore prescribed, shall be of the gate or angle type and shall be located at such a height that the center line of the valve shall be not less than three feet nor more than six feet above the floor and so installed that the water will flow through the valve without kinking or bending the hose. Valve bodies shall be constructed of non-corrodible material and rated for not less than the pressure which exists in the standpipe. Hand wheels on all two and one-half-inch hose valves shall be of solid construction of malleable iron, cast iron, brass or bronze and shall be not less than five inches in diameter. Each two and one-half inch outlet shall be provided with a lugged cap to protect the threads of the valve, attached to the valve by a chain not less than six inches long.
(Prior code § 91-75; Amend Coun. J. 10-30-96, p. 31261, § 1)
A one and one-half-inch hose connection and valve shall be provided adjacent to each fire department hose valve, except at the connection above the roof if this is exposed to freezing. All hose threads shall fit the couplings of the Chicago fire department.
(Prior code § 91-76; Amend Coun. J. 10-30-96, p. 31261, § 1)
The one and one-half-inch hose valve shall be of the gate or angle type. Where the pressure is not greater than 300 pounds the entire valve, except hand wheel, shall be of brass of standard or extra heavy weight; where the pressure is greater than 300 pounds, the valve, except the hand wheel, shall be of extra heavy brass. Hand wheels shall be of cast or malleable iron, brass or bronze.
(Prior code § 91-77; Amend Coun. J. 10-30-96, p. 31261, § 1)
There shall be attached to each one and one-half inch hose valve not more than 100 feet of one and one- half inch approved fire hose if the control valve is located in a properly enclosed stairwell and 75 feet if not provided with an approved nozzle; the minimum length of hose permitted with one pair of couplings shall be 50 feet. This hose shall be hung on a semi-automatic rack so constructed that the hose can be quickly laid without having it catch in the rack or fall to the floor, that the water will be held back by the hose when on the rack, and that one person can operate the rack which shall swing freely in the direction of the pull and means for holding the nozzle shall be arranged so that it can be easily removed. Racks shall be installed in a suitable cabinet or shall have a cover which will protect the hose from injury, from moisture, dust and other causes. The one and one-half inch valve and hose shall not be required on the standpipe when the building is fully protected by an automatic sprinkler system complying with the requirements of this chapter.
(Prior code § 91-78; Amend Coun. J. 10-30-96, p. 31261, § 1; Amend Coun. J. 9-6-17, p. 55278, Art. VII, § 30)
Where the pressure at nozzles is more than 65 pounds per square inch, the one and one-half inch hose valve shall be provided with a device or disc to limit the pressure to 90 pounds so that the nozzle can be safely handled by one person.
(Prior code § 91-79; Amend Coun. J. 10-30-96, p. 31261, § 1)
An interior standpipe system required in a building, the top floor of which is more than 275 feet above grade, exclusive of space used for sprinkler, elevator, ventilation and other building machinery, shall be separated into two or more zones, each of which shall include a fire pump, pressure maintenance pump, and all other equipment and piping necessary for a complete inside standpipe installation. The lowest system shall serve the portion up to and including the story the floor of which is 275 feet or less above grade. Above 275 feet systems shall be provided to serve zones of not more than 20 stories each.
(Prior code § 91-81; Amend Coun. J. 10-30-96, p. 31261, § 1)
In a building having a top floor which is more than 275 feet above grade, individual zones, as required by this Code, shall be supplied by two or more separate risers from the zone fire pump located in the lowest story of the building, known as an express riser, except that the number of express risers shall not exceed the number of risers serving that zone; or by individual fire pumps located on the lowest floor of each zone taking suction under head from a tank automatically filled by two or more risers from the adjacent lower zone. Such a tank shall have a capacity sufficient to supply the largest pump in the zone at its rated capacity for at least 30 minutes but not less than 10,000 gallons.
(Prior code § 91-82; Amend Coun. J. 10-30-96, p. 31261, § 1)
Loading...