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NFPA Exam CWBSP Topic 3 Question 16 Discussion

Actual exam question for NFPA's CWBSP exam
Question #: 16
Topic #: 3
[All CWBSP Questions]

For a hydraulically calculated light hazard area under a mezzanine constructed of 2 in. (50 mm) x 14 in. (350 mm)

combustible solid wood members spaced 4 ft (1.2 m) on center, what is the maximum protection area for standard

upright spray sprinklers?

Show Suggested Answer Hide Answer
Suggested Answer: A

For a hydraulically calculated light hazard area under a mezzanine with the given construction and spacing, the maximum protection area per standard upright spray sprinkler is typically around 130 ft (12.1 m), considering the obstructions and distribution challenges posed by the mezzanine structure.


by Piraisudan P at May 26, 2025, 09:54 AM

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Refugia
19 days ago
Wait, did they say the members were made of 'combustible solid wood'? In that case, I'm going with B) 168 ft2 (15.6 m2) to be on the safe side. No need to burn down the whole mezzanine!
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Jacki
20 days ago
Ah, the age-old question of mezzanine protection areas. I'll just close my eyes and point - D) 225 ft2 (20.9 m2) it is!
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Verdell
21 days ago
Hmm, this is a tricky one. I'm going to go with my gut and say C) 200 ft2 (18.6 m2). Anything less just doesn't seem right for that setup.
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Kimberlie
3 days ago
I agree, C) 200 ft2 (18.6 m2) does seem like the best option for that specific scenario.
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Cammy
10 days ago
I think you might be onto something with C) 200 ft2 (18.6 m2). It seems like a reasonable choice.
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Noemi
29 days ago
Definitely not B) 168 ft2 (15.6 m2), that's way too specific. I'm leaning towards D) 225 ft2 (20.9 m2).
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Olene
1 months ago
A) 130 ft2 (12.1 m2) seems a bit too small for a mezzanine with those dimensions. I'd go with C) 200 ft2 (18.6 m2).
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Loreta
1 days ago
I would go with C) 200 ft2 (18.6 m2) as well, it provides better coverage.
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Tashia
3 days ago
I agree, C) 200 ft2 (18.6 m2) seems more appropriate for the area.
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Sage
25 days ago
I think A) 130 ft2 (12.1 m2) is too small for that space.
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Vivan
1 months ago
I remember reading about this in the textbook, and it does seem like A) 130 ft2 (12.1 m2) is the correct answer
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Jimmie
2 months ago
I'm not sure, but I think it might be D) 225 ft2 (20.9 m2)
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Silvana
2 months ago
I disagree, I believe it's C) 200 ft2 (18.6 m2)
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Vivan
2 months ago
I think the answer is A) 130 ft2 (12.1 m2)
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