In which scenario would a combination system be necessary?

A combination standpipe system is designed to serve both hose connections and automatic sprinklers within a building. This type of system is necessary when a facility requires both standpipe capabilities, allowing firefighters to connect hoses for firefighting operations, and sprinkler systems, which provide automatic fire suppression. Such a configuration is essential in larger or more complex buildings where adequate fire protection cannot be achieved with either system alone.

In scenarios where automatic sprinklers are not needed or a building contains only a dry standpipe, the combination system would not be necessary. Similarly, buildings that are shorter than six stories often do not require the complexities associated with a combination system, as simpler systems may suffice for fire protection needs. Therefore, the combination system is specifically tailored for instances where both tools – hose connections and automatic sprinklers – are essential for effective fire management and safety.