According to NFPA14, When to use Class I hose and when to use other types of hoses such as Class II or Class III
The class of the system is dependent on the general installation requirements of NFPA 14.
If you governed by the NFPA 101, Life Safety Code, the following occupancy chapters mandatorily referenceSection 11.8 and, thus, require fire department use standpipes (Class I) for high-rise buildings:
1. New assembly occupancies (12.4.4)2. New educational occupancies (14.4.2)3. New day-care occupancies (16.4.2)4. Existing day-care occupancies (17.4.2)5. New health care occupancies (18.4.2)6. New detention and correctional occupancies (22.4.3)7. New hotels and dormitories (220.127.116.11)8. New apartment buildings (18.104.22.168)9. New large residential board and care occupancies(32.3.4)10. New business occupancies (38.4.2)
NFPA 101 requires Class II and/or III standpipes only in certain occupancy chapters. For example, standpipes are required on stages of assembly occupancies and in detention and correctional occupancies.
Its all in the NFPA 14 definitions
And the NFPA 14 requirements for hoses:
I can not speculate what the local building codes and regulations are for class system for standpipes.
Hope this information clears up your concern.
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