Water for Fire Fighting in High外文翻译.docVIP

Water for Fire Fighting in High-rise Buildings HORATIO BOND, SFPE, Chief Engineer National Fire Protection Association NFPA Standards provide guidance on water supplies for stand- pipe or sprinkler systems in high-rise buildings, but fire flow, pressure ranges, and the use of tanks and pumps are matters of engineering. T HE Standard for the Installation of Standpipe and Hose Systems, NFPA No. 14, and the Standard for the Installation of Sprinkler Sys- tems, NFPA No. 13, provide guidance on water supplies for these services. The guidelines of both these standards require engineering judgment to determine what should be best for the situation in an individual building or structure. Here are some personal ideas on this engineering for which I have been asked recently. They cover some of the problems I see and some possible solutions. STANDPIPES The NFPA Committee on Standpipes and Outside Protection has ap- pointed a subcommittee to review the Standard for Standpipes and Hose Systems, NFPA No. 14, and it is quite likely that future requirements will deal more comprehensively with high-rise buildings. HAND HOSE In very tall buildings, it is necessary to divide the water supply for normal building services into zones in much the same way that public water systems are zoned in cities with numerous areas on hills. Hand hose for use by building occupants requires a different pressure range than that required for fire department lines. The regular water supply for sanitary and other uses within the various zones of a tall building also has different NOTE: This paper was presented at the National Fire Protection Association Fall Conference, November 16, 1965, at Los Angeles, California. 159 160 Fire Technology pressure requirements. These affect details of how the water supply piping systems are arranged. FIRE FLOW Fire department water supplies should be estimated for each floor of a high-rise building in much the same way that one estimates the fire de- partment