How do you compute the zone flow Q for a zone with six sprinklers each rated at 2 GPM?

How do you compute the zone flow Q for a zone with six sprinklers each rated at 2 GPM?

• A. 6 GPM
• B. 8 GPM
• C. 12 GPM
• D. 24 GPM

Answer: (C)

Total zone flow is the sum of the flow rates of all sprinklers in the zone when they operate together. With six sprinklers each delivering 2 GPM, multiply: 6 × 2 = 12 GPM. So the zone flow should be 12 GPM. The other numbers wouldn’t apply here unless the number of sprinklers or their individual flow rates were different, or not all sprinklers run simultaneously.

Total zone flow is the sum of the flow rates of all sprinklers in the zone when they operate together. With six sprinklers each delivering 2 GPM, multiply: 6 × 2 = 12 GPM. So the zone flow should be 12 GPM. The other numbers wouldn’t apply here unless the number of sprinklers or their individual flow rates were different, or not all sprinklers run simultaneously.