In a high-rise building, the standpipe system primarily provides?

• A. A reliable water source inside the building for firefighting operations.
• B. A source of drinking water for tenants.
• C. A means to drain water to the exterior.
• D. A method to deliver foam concentrate to sprinklers.

Answer: (A)

Standpipe systems are designed to give firefighters a dependable water source inside a tall building, so they can rapidly apply water to a fire without relying solely on exterior hydrants. They provide pressurized water through a network of pipes with outlets on each floor or in stairwells, allowing firefighters to connect hoses and attack the fire on the floor where it’s burning. This interior supply supports firefighting operations in high-rise structures, complementing automatic sprinkler systems rather than replacing them. It’s not for drinking water, not a drainage system, and not a method to deliver foam concentrate to sprinklers.