Which type of standpipe connections are included in Class III standpipes?

Class III standpipes are designed to serve both trained firefighters using larger hose lines and untrained individuals who may need to use smaller hoses in an emergency situation. This is why they include a combination of 1.5-inch and 2.5-inch connections. The 1.5-inch connection provides accessibility for those who may not have formal training or the strength to operate larger hoses, while the 2.5-inch connection is intended for professional firefighters, allowing them to deliver more water at higher pressure when necessary.

By including these two sizes, Class III standpipes ensure flexibility in firefighting tactics, enabling effective response in various scenarios. This design is crucial in maintaining the efficiency and safety of firefighting operations, making Class III standpipes an essential component of public safety in many buildings.