What type of standpipe system is equipped with 2 ½" outlets and designed for fire department use?

A Class I standpipe system is specifically designed for use by fire departments and is equipped with 2 ½-inch outlets. This system allows firefighters to connect their hoses directly to the standpipe and access water for firefighting operations, particularly in buildings that are taller or where access may be challenging. Class I systems do not provide hose connections for building occupants; rather, they are intended solely for trained personnel like firefighters to use in emergency situations.

In larger buildings or high-rises, these standpipes facilitate a more effective firefighting strategy by allowing fire crews to quickly obtain water at various heights without having to bring water supply directly from fire engines to upper floors. This capability makes Class I standpipes critical for maintaining safety and efficiency during fire emergencies.