Final answer:
Standpipe and hose systems are primarily classified by type (Class I, II, or III), their intended users (fire department or building occupants), and mode of operation (manual, automatic, semi-automatic) as well as by their state (wet, dry, or preaction).
Step-by-step explanation:
Standpipe and hose systems are classified primarily according to their type of system, size, and intended use. These systems are vital components of a building's fire protection strategy, providing a prearranged means of delivering water to extinguish a fire.
The standpipe systems are generally categorized into three classes:
- Class I systems are designed for use by fire departments and those trained in handling heavy fire streams.
- Class II systems are intended for use by building occupants and are equipped with smaller hoses that can be easily handled.
- Class III systems combine the features of Class I and Class II, catering to both fire department personnel and building occupants.
In addition, these systems can be further differentiated by their method of operation, such as manual, automatic, or semi-automatic, and whether they are a wet, dry, or preaction system depending on whether the pipes are constantly filled with water or not.