Which standpipe subsection describes a system that automatically fills a dry standpipe with water upon activation?

• A. Automatic dry
• B. Automatic wet
• C. Semi automatic dry
• D. Manual dry

Answer: (A)

Standpipe systems can be dry or wet, and the way water is brought into the system matters. An automatic dry standpipe is normally empty but is designed to fill with water automatically when the system is activated, such as when a discharge valve at a standpipe outlet is opened. This means water is quickly delivered to the connected outlets without someone having to manually charge the lines. It contrasts with manual dry, where a person must manually introduce water into the system, and with wet, where water is already present in the pipes at all times. Therefore, the system described—automatically filling with water upon activation—aligns with an automatic dry standpipe.