NFPA Exam CFI-I Topic 2 Question 15 Discussion

Actual exam question for NFPA's CFI-I exam

Question #: 15
Topic #: 2

What is the minimum acceptable flow at the base of the riser for a pipe-schedule sprinkler system in an ordinary hazard (Group 1) occupancy?

A250 gpm (946 L/min)

B500 gpm (1,893 L/min)

C700 gpm (2,649 L/min)

D850 gpm (3,218 L/min)

Show Suggested Answer

Suggested Answer: B

For a pipe-schedule sprinkler system, the minimum water flow at the base of the riser depends on the occupancy hazard classification, as defined in NFPA 13.

For Ordinary Hazard (Group 1) occupancies, the minimum required flow at the base of the riser is 500 gpm (1,893 L/min).

The 500 gpm flow ensures sufficient water supply to the sprinkler system to suppress fires involving moderate combustibles.

Higher flows (e.g., 700 gpm and 850 gpm) are required for more severe hazards (e.g., Extra Hazard occupancies).

NFPA 13, Table 11.2.3.1.1: Minimum flow requirements for pipe-schedule systems.

by Tammara at Jul 13, 2025, 05:45 AM

Limited Time Offer

25%

Off

Get Premium CFI-I Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Yolando

8 days ago

I think the minimum acceptable flow is 500 gpm.

upvoted 0 times

...