What is a standpipe system and how is it used in firefighting?

• A. A pipe system inside buildings that provides water outlets on multiple floors; pumped to supply standpipe outlets
• B. A water supply from fire hydrants only
• C. A temporary water tank used on scene
• D. A portable pump used in open areas

Answer: (B)

A standpipe system is a piping network inside a building that provides water to outlets on multiple floors so firefighters can attach hoses and fight a fire from within the structure. The water for these outlets comes from the building’s own water supply and pumping equipment, and when more pressure or volume is needed, a fire department connection allows a fire engine to supply water into the standpipe—typically using a hydrant as the external source. Standpipes can be kept full of water (wet systems) or charged only when needed (dry systems). Fire crews use the standpipe outlets to deliver water to upper floors without having to run long supply hoses from outside, making interior fire attack more efficient and safer.