Which term governs water discharge criteria and distribution in sprinklers?

Which term governs water discharge criteria and distribution in sprinklers?

• A. Design Criteria
• B. Pipe Sizing
• C. Fire Department Connection
• D. Discharge Criteria

Answer: (D)

Discharge criteria is the term that specifically defines how water will be discharged once sprinklers operate, including the required flow rates and how that water is distributed to the heads. In NFPA 13R for low-rise residences, this focuses on ensuring the system delivers the appropriate amount of water to the areas protected and that the distribution pattern meets the protection objectives. Design criteria, by contrast, covers the overall plan for the system—hazard classification, required water supply, and operating conditions—rather than the exact discharge behavior. Pipe sizing deals with sizing the piping to achieve the needed pressure and flow, not the actual discharge characteristics. The Fire Department Connection pertains to external water supply access, not how the sprinkler discharge is governed. So, the term that governs water discharge criteria and distribution in sprinklers is discharge criteria.

Discharge criteria is the term that specifically defines how water will be discharged once sprinklers operate, including the required flow rates and how that water is distributed to the heads. In NFPA 13R for low-rise residences, this focuses on ensuring the system delivers the appropriate amount of water to the areas protected and that the distribution pattern meets the protection objectives.

Design criteria, by contrast, covers the overall plan for the system—hazard classification, required water supply, and operating conditions—rather than the exact discharge behavior. Pipe sizing deals with sizing the piping to achieve the needed pressure and flow, not the actual discharge characteristics. The Fire Department Connection pertains to external water supply access, not how the sprinkler discharge is governed.

So, the term that governs water discharge criteria and distribution in sprinklers is discharge criteria.