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NFPA Exam CWBSP Topic 2 Question 12 Discussion

Actual exam question for NFPA's CWBSP exam
Question #: 12
Topic #: 2
[All CWBSP Questions]

After reviewing an existing sprinkler system, it was determined that sprinklers were installed using NFPA 13 using the Ordinary Hazard Pipe Schedule method. The highest elevation of sprinklers is 28 ft (8.53m) and the system is fully monitored as specified by NFPA 13. What is the minimum pressure and flow required?

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Suggested Answer: B

For a warehouse with the described characteristics, a design density of 0.33 gpm/ft is a common requirement to ensure adequate protection for Class III commodities on wooden pallets, taking into account the storage configuration and commodity type.


by Chaya at Mar 19, 2025, 03:11 PM

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Zana
2 months ago
I wonder if the sprinklers are installed in a way that they can actually reach the highest elevation. Might need to bring a ladder to check that out.
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Wenona
25 days ago
B) 850 gpm at 27 psi (3,200 L/min at 1.86 bar)
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Ressie
29 days ago
I think option A is correct, the pressure and flow seem appropriate for the sprinkler system.
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Tresa
1 months ago
A) 500 gpm at 27 psi (1,900 L/min at 1.86 bar)
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Jeannetta
3 months ago
Well, this is a real head-scratcher. I'll just close my eyes and point - D, 850 gpm at 32 psi. What could go wrong?
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Madalyn
1 months ago
User 3: I agree, D sounds like the correct option based on the information provided.
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Ollie
1 months ago
Zena: Well, I'm not entirely sure, but that's my best guess.
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Barrett
1 months ago
User 2: That seems like a reasonable choice. The system must be designed to meet those requirements.
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Zena
1 months ago
User 2: Are you sure about that? It seems like a high flow rate.
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Son
2 months ago
User 1: I think the answer is D, 850 gpm at 32 psi.
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Serina
2 months ago
User 1: I think the answer is D, 850 gpm at 32 psi.
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German
3 months ago
Ah, the old NFPA 13 Ordinary Hazard Pipe Schedule conundrum. I'm feeling lucky, let's go with B - 850 gpm at 27 psi.
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Graciela
3 months ago
Hmm, 28 ft elevation and fully monitored system, that sounds like it needs a bit more pressure than the lower pressure options. I'll go with D - 850 gpm at 32 psi.
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Evangelina
1 months ago
D it is then. Better safe than sorry when it comes to sprinkler systems.
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Vallie
2 months ago
I'm leaning towards D as well. It's better to have more pressure than not enough in this case.
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Aleta
3 months ago
Agreed, D seems like the safest option to ensure proper coverage and flow.
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Carlota
3 months ago
I think D is the right choice too. The higher elevation and fully monitored system definitely need that extra pressure.
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Deeanna
3 months ago
The NFPA 13 Ordinary Hazard Pipe Schedule method is the key here. I think the answer is C - 500 gpm at 32 psi.
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Serita
2 months ago
Yes, I also believe the answer is C - 500 gpm at 32 psi based on the information provided.
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Lavonda
2 months ago
I agree with you, the Ordinary Hazard Pipe Schedule method is crucial in determining the minimum pressure and flow requirements.
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Leota
3 months ago
Hmm, I see your point. Maybe we should review the calculations again.
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Leslie
3 months ago
I disagree, I believe the correct answer is D) 850 gpm at 32 psi.
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Leota
4 months ago
I think the answer is A) 500 gpm at 27 psi.
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