In Class III standpipes, hose connections serve which purpose?

• A. They provide only 2.5-inch Fire Department connections.
• B. They provide only 1.5-inch occupant-use connections.
• C. They provide both 2.5-inch Fire Department connections and 1.5-inch occupant-use connections as appropriate.
• D. They are not connected to any hose connections.

Answer: (C)

Class III standpipes are designed to support both building occupants and firefighters. They provide two kinds of hose connections: 2.5-inch outlets for fire department use, which allow firefighters to connect standard large-diameter hoses for high-flow fire attack, and 1.5-inch outlets for occupant use, enabling trained occupants to grab a hose and begin suppression from within the building. This dual capability is what makes Class III standpipes versatile, offering immediate starter resistance by occupants while still providing the larger, higher-flow connection needed by the fire service. If a system only offered one type of connection, it wouldn’t meet the needs of both groups, and a standpipe would be limited to either occupant-use or firefighter use alone.