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. Standpipe system
• B. Wet pipe system
• C. Deluge system
• D. Sprinkler system

Answer: (A)

Standpipe systems are vertical piping networks that bring water from an external supply up to hose outlets on each floor, so firefighters can connect a hose at every level. This arrangement is specifically for delivering water to floor outlets rather than sprinklers, making it ideal for high-rise fires where crews need ready access to water at multiple heights. The lines in a standpipe can be pre-filled (wet standpipe) or kept charged with air and filled on demand (dry standpipe), but the key idea is providing a reliable water source at each floor through hose connections. This is different from sprinkler systems, which supply water to sprinkler heads in ceilings, not to floor outlets for handlines.

Standpipe systems are vertical piping networks that bring water from an external supply up to hose outlets on each floor, so firefighters can connect a hose at every level. This arrangement is specifically for delivering water to floor outlets rather than sprinklers, making it ideal for high-rise fires where crews need ready access to water at multiple heights. The lines in a standpipe can be pre-filled (wet standpipe) or kept charged with air and filled on demand (dry standpipe), but the key idea is providing a reliable water source at each floor through hose connections. This is different from sprinkler systems, which supply water to sprinkler heads in ceilings, not to floor outlets for handlines.