In a Class I standpipe system, the hydraulically most remote standpipe must meet a minimum flow of 250 gpm.

In a Class I standpipe system, the hydraulically most remote standpipe must meet a minimum flow of 250 gpm.

• A. True
• B. False
• C. Only in certain zones
• D. The specified flow does not apply to remote standpipes

Answer: (D)

In NFPA 14, the 250 gpm requirement is about the standpipe system’s overall hydraulic design, not a fixed rule that every remote standpipe must independently deliver 250 gpm. The standard aims to ensure the farthest point in the system can be supplied with sufficient flow and pressure when a firefighting hose line is in use, taking into account the distribution of demand across multiple outlets. Because multiple outlets can be used simultaneously and friction losses accumulate, the system is designed so that the farthest point can meet the 250 gpm requirement under the intended loading, rather than mandating a separate 250 gpm flow for each remote standpipe. Therefore, stating that the specified flow must apply to a remote standpipe as a discrete requirement isn’t accurate—the flow figure pertains to the system’s capability at the most hydraulically remote point, not to each remote standpipe individually.

In NFPA 14, the 250 gpm requirement is about the standpipe system’s overall hydraulic design, not a fixed rule that every remote standpipe must independently deliver 250 gpm. The standard aims to ensure the farthest point in the system can be supplied with sufficient flow and pressure when a firefighting hose line is in use, taking into account the distribution of demand across multiple outlets. Because multiple outlets can be used simultaneously and friction losses accumulate, the system is designed so that the farthest point can meet the 250 gpm requirement under the intended loading, rather than mandating a separate 250 gpm flow for each remote standpipe. Therefore, stating that the specified flow must apply to a remote standpipe as a discrete requirement isn’t accurate—the flow figure pertains to the system’s capability at the most hydraulically remote point, not to each remote standpipe individually.