Standpipe hose valves must be located horizontally, a minimum of 3 feet, and a maximum of ______ feet off the finished floor.

The correct height for standpipe hose valves is set at a maximum of 5 feet off the finished floor. This requirement is established to ensure accessibility and usability for firefighters and emergency personnel during critical situations. Placing the valve too high can make it difficult to operate, especially when in full firefighting gear, which can be cumbersome and restrict movement.

Standpipe systems are designed to provide a reliable source of water for firefighting efforts, and easy access to the valves is vital for their effective operation. The 5-foot maximum is a balance between being high enough to keep the hoses off the floor (thus minimizing tripping hazards) and low enough for individuals using the system to reach without excessive strain.

The other options either exceed the maximum height limit or fall outside the best practices established for emergency response scenarios. Understanding these specifications helps ensure compliance with building codes and enhances overall safety in fire emergencies.