In a multizone standpipe system, how is water supplied to each zone?

In a multizone standpipe system, each individual zone is equipped with its own automatic water supply. This design is essential for ensuring that each zone can provide adequate water pressure and flow for firefighting operations without relying solely on a central source. Having an automatic water supply for each zone allows for more efficient and effective response to fire incidents within large or complex structures, as it facilitates immediate access to water in multiple areas simultaneously.

The automatic water supply can be crucial during emergencies, particularly in high-rise buildings, where relying on a single centralized pump might not deliver the necessary pressure or volume to all involved zones equally. The infrastructure of the multizone system allows for redundancy and reliability, ensuring that firefighters can operate efficiently in various parts of a building without interruption in water supply. This capability enhances overall safety by allowing for simultaneous firefighting efforts across different zones of a building.

Other options do not accurately represent how a multizone standpipe system is designed to function, as relying solely on a centralized pump or a single main water line would not provide the needed pressure and flow throughout different zones.