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How to determine the types of the hydrant for different protected rooms as per NFPA 14, Class I, Class II or Class III? 

Question asked by zhangya on Jan 4, 2020
Latest reply on Jan 11, 2020 by zhangya

Within the NFPA 14, there are three types of hydrant are available to be selected, namely, ClassI, ClassII and Class III, also, the different configuration and different calculation method also illustrated in the standard, while the purpose of different type hydrant are not clearly expressed in the standard, so, i don't know how to handle the different type of rooms/buildings, for example, what type should be used in the administration building, and high story building?