Which class standpipe is designed for use by building occupants only?

Which class standpipe is designed for use by building occupants only?

• A. Class I
• B. Class II
• C. Class III
• D. None

Answer: (B)

Standpipe systems are categorized by who is intended to use them and the hose connections they provide. Class II standpipes are designed for building occupants to use a light, 1.5-inch hose stored in a cabinet to tackle small fires until the fire department arrives. This occupant-use focus is the defining feature of Class II. In contrast, Class I outlets are larger (2.5 inches) and intended for firefighters, and Class III combines features for both occupants and firefighters. So for a system meant for occupants to use, Class II fits that purpose.

Standpipe systems are categorized by who is intended to use them and the hose connections they provide. Class II standpipes are designed for building occupants to use a light, 1.5-inch hose stored in a cabinet to tackle small fires until the fire department arrives. This occupant-use focus is the defining feature of Class II. In contrast, Class I outlets are larger (2.5 inches) and intended for firefighters, and Class III combines features for both occupants and firefighters. So for a system meant for occupants to use, Class II fits that purpose.