Define a standpipe system and its typical use.

• A. A network of sprinkler heads that activates independently.
• B. A standpipe provides readily accessible water supply to building firefighters, often in high-rise buildings, with designated outlets connected to the building’s water supply.
• C. A closed loop piping system for test drainage only.
• D. A residential-grade hose system for building occupants.

Answer: (B)

A standpipe system is a dedicated water supply network inside a building that provides firefighters with readily accessible water through designated hose connections connected to the building’s water supply, typically installed in high-rise structures. This setup allows firefighters to quickly attach hoses on each floor or at stairwells and draw water without needing portable pumps from outside the building. Wet standpipes keep water in the pipes at all times, while dry standpipes are fill-ready only when the system is charged, but in both cases the goal is fast, reliable access to water for firefighting operations.

This differs from a network of sprinkler heads that activate automatically to release water for suppression, which is why the other descriptions don’t fit. It also isn’t a closed loop for testing or drainage, nor is it a residential-grade hose system intended for occupants; standpipes are specifically designed to support fire department firefighting within larger buildings.