The systems in high-rise buildings that deliver water from the outside up to fire hose outlets on each floor are:

The systems in high-rise buildings that deliver water from the outside up to fire hose outlets on each floor are:

• A. Dry bed
• B. Standpipe
• C. Cross feed
• D. Cistern

Answer: (B)

Standpipe systems are the way water is delivered to fire hose outlets on each floor of a tall building. They form a vertical network of pipes inside the building that brings water up to hose connections on every level, so firefighters can attach a hose and begin flowing water at the floor where the fire is located. These systems are tied to an external water source or a fire pump, which pushes water up to the standpipe outlets, and they can be either wet (pipes filled with water) or dry (pipes empty until a hose is opened and water is pumped in). The other terms don’t describe this whole floor-by-floor water distribution: a cistern is just a storage tank, cross feed refers to transferring water between lines, and a dry bed isn’t the standard term for the system that delivers water to each floor’s outlets.

Standpipe systems are the way water is delivered to fire hose outlets on each floor of a tall building. They form a vertical network of pipes inside the building that brings water up to hose connections on every level, so firefighters can attach a hose and begin flowing water at the floor where the fire is located. These systems are tied to an external water source or a fire pump, which pushes water up to the standpipe outlets, and they can be either wet (pipes filled with water) or dry (pipes empty until a hose is opened and water is pumped in). The other terms don’t describe this whole floor-by-floor water distribution: a cistern is just a storage tank, cross feed refers to transferring water between lines, and a dry bed isn’t the standard term for the system that delivers water to each floor’s outlets.