Which of the following is NOT a listed use for 2½ inch hose? (Final)

• A. Supply lines
• B. Attack lines
• C. Ladder pipe
• D. Denver packs

Answer: (C)

The main idea is that 2½ inch hose is kept handy for high-flow handline use and compact standpipe/pack deployment. It’s commonly used for attack lines inside structures, as a supply line between pump and engine or standpipe, and in portable Denver packs for quick exterior work. A ladder pipe, however, is an elevated-stream device on an aerial that usually requires a larger or dedicated feed to deliver the high volume of water needed from an elevated position. Because ladder pipe setups typically don’t rely on a standard 2½ inch hose as their primary feed, it isn’t listed as a typical use for this hose size.