Ordinance No. 19413 - Laserfiche WebLink

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~rdi~nance~~- 25 department and those trained in handling heavy fire streams ~Z-1/2" hose}; Class Z. ~ wet standpipe system for use by the building occupants until the arrival of the fire department ~~-~~/2" hose}; Class 3. A wet standpipe system for use by the fire department ~2-~/2" or larger hose}. A combi nati on..~~standp~ pe system. A combi ned sprinkler and wet standpipe system is where the water piping serves both 2-1/2 inch hose outlets for fire department use and outlets ~ spri nkl er heads} for automatic sprinklers, ~~1} Section 3$D3, Stand i es, is hereby amended by adding Subsec- tion ~f} to read: ~f} Location of combination stand i e system. ~ combination standpipe shall be provided for each stairway or smoke-proof enclo- sure which extends from the top floor to the ground story in build- ings four or more stories in height. Combination standpipe systems shall have outlets so located that all portions of the building and all roams and other spaces are within 20 feet of the nozzle attached to 1Da feet of hose. 1. Size. Combination standpipe systems shall be not less than four inches in diameter in buildings in which the highest outlet is less than 75 feet from the fire department connection and shall be not less than six inches in diameter where the highest outlet is 75 feet or more above that connec- tion. ~. Construction and Testi n Fitti ngs and connections shall be of sufficient strength to withstand 3DD pounds of water pressure per square inch when ready for service. All combination standpipes shall be tested hydrostatically to withstand such pressure for two hours, but in no case shall the pressure be less than 50 pounds per square inch above the maximum working pressure. 3. Riser shut-off valve and drain. Each individual riser shall be equipped with an 05 and Y valve at its base and an approved valve for draining. 4. Fire de artment connections. All four inch cambina- tion standpipes shall be equipped with two-way fire department connections. All six-inch combination standpipes shall be equipped with four-way fire department connections. Combina- tion standpipe systems with three or more standpipes shall be provided with at least four-way fire department inlet connec- tions. Each fire department connection shall be located on a street front not less than 1$ inches nor more than four feet above grade and shall be equipped with an approved straight- way check valve and substantial plugs ar caps. All fire department connections shall be inspected against mechanical injury and be visible and accessible. The number of fire department connections shall be the number that the fire de- partment finds necessary for adequate fire protection. 5. Qutlets. Every standpipe shall be equipped with a 2-~/2" outlet with adapters far 1-~/~ inch hale not less than two feet nor mare than four feet above the floor level at