Which class of standpipe includes a 38mm hose cabinet?

• A. Dry system
• B. Class II - 38mm hose cabinet
• C. Class I - 65mm connection
• D. Class III - 65mm connection and 38mm hose

Answer: (B)

Standpipe classifications are defined by the size of the hose provided and who is expected to use it. A 38 mm hose cabinet is the hallmark of the occupant-use class of standpipe. This class supplies a 38 mm (1.5 in) handline in cabinets on each floor for building occupants to use until the fire department arrives. The 65 mm (2.5 in) outlets used in other classes are intended for firefighter use, not for occupants in a hose cabinet. Class III combines both 65 mm outlets and 38 mm handlines, but the cabinet-specific feature points to Class II. So, the class that includes a 38 mm hose cabinet is Class II.