NFPA CWBSP Exam - Topic 1 Question 20 Discussion

Actual exam question for NFPA's CWBSP exam

Question #: 20
Topic #: 1

[All CWBSP Questions]

A restaurant service area has an 18 ft (5.5 m) high T-Bar ceiling throughout. Using quick-response sprinklers in a wet

sprinkler system, what is the minimum area and density that should be calculated?

A0.10 gpm/900 ft2 (4.1 mm/min over 84 m2)

B0.10 gpm/1,080 ft2 (4.1 mm/min over 100.3 m2)

C0.15 gpm/900 ft2 (6.1 mm/min over 84 m2)

D0.15 gpm/1,080 ft2 (6.1 mm/min over 100.3 m2)

Show Suggested Answer

Suggested Answer: D

In a restaurant service area with an 18 ft high T-Bar ceiling and using quick-response sprinklers in a wet system, the minimum area and density that should be calculated is typically 0.15 gpm over 1,080 ft (6.1 mm/min over 100.3 m), considering the ceiling height and occupancy.

by Vicky at Aug 04, 2025, 03:20 AM

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Glenna

2 months ago

C has a higher density, but is it really necessary?

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Ettie

2 months ago

I agree with B, makes the most sense for coverage.

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Delfina

2 months ago

Definitely not A, that density seems too low.

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Theron

3 months ago

I think it's B, 0.10 gpm/1,080 ft2.

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Anabel

3 months ago

Wait, are we sure about those numbers? Seems off to me.

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Starr

3 months ago

I feel like option B makes sense, but I can't remember if the area should be 900 or 1,080 ft² for this type of ceiling.

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Merrilee

3 months ago

I'm a bit confused about the density options. Is it 0.15 gpm for higher ceilings? I need to double-check that.

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Andra

4 months ago

I think we practiced a question similar to this, and I recall that 1,080 ft² was mentioned as a common area for wet systems.

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Hollis

4 months ago

I remember that for quick-response sprinklers, the density is often around 0.10 gpm, but I'm not sure about the area.

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Pearly

4 months ago

No problem, I've got this. Quick-response sprinklers in a wet system are pretty straightforward. I'll just plug the ceiling height into the standard formulas and select the appropriate minimum area and density.

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Avery

4 months ago

This question seems a little tricky. I'll need to review the code requirements carefully and make sure I'm applying them correctly to this specific scenario with the T-Bar ceiling.

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Emile

4 months ago

Okay, I think I've got this. The key is to determine the minimum area and density based on the 18 ft ceiling height. I'll work through the calculations step-by-step to make sure I get the right answer.

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Tawanna

5 months ago

Hmm, I'm a bit unsure about the specifics of quick-response sprinklers. I'll need to double-check the code details to make sure I understand the differences from standard sprinklers.

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Tess

5 months ago

This looks like a straightforward sprinkler system design question. I'll need to review the code requirements for quick-response sprinklers in a wet system and calculate the minimum area and density.

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