What is the minimum gpm discharge required per sprinkler head?

The FPE has indicated that a vertical opening shall be protected by closely spaced sprinklers in combination with a draft stop installed per code. The sprinklers will be spaced 6 ft (1.83 m) on center.

What is the minimum gpm discharge required per sprinkler head?
A . 10 gpm (38 lpm)
B . 15 gpm (57 lpm)
C . 18 gpm (68 lpm)
D . 20 gpm (76 lpm)

View Answer

Answer: B

Explanation:

For closely spaced sprinklers protecting a vertical opening with a draft stop, a minimum discharge of 15 gpm per sprinkler head is commonly required to ensure sufficient water distribution and penetration for fire suppression within the protected area. This discharge rate provides a balance between efficiency and effectiveness in fire control.

Reference: General fire protection engineering principles and NFPA standards related to the design and installation of sprinkler systems for vertical openings.