PE Problem #66

9/4/2018

A Level 2 Aerosol is to be boxed and stored on pallets at 15 feet with a ceiling height of 26 feet. Which of the following sprinkler protection criteria is acceptable?
a. Standard Spray (K-factor at least 8.0) Sprinklers; 0.30 gpm/sqft over 2,500 sqft
b. ESFR upright K14.0, quick-response, 12 sprinklers at 50 psi
c. ESFR pendent K16.8, quick response, 12 sprinklers at 35 psi
d. ESFR pendent K22.4, standard response, 12 sprinklers at 25 psi

Solution | Posted 09/05/18

9 Comments

FPE

9/4/2018 08:04:55 am

a. Standard Spray (K-factor at least 8.0) Sprinklers; 0.30 gpm/sqft over 2,500 sqft
c. ESFR pendent K16.8, quick response, 12 sprinklers at 35 psi

Both are correct as mentioned in NFPA 6-264, Table 6.16.3.

9/4/2018 08:47:26 am

rob

9/4/2018 09:35:05 am

Table 6.16.3 indicates that B, C & D are all correct, based on the 15' storage height with a maximum ceiling height of 30'

Colleen

9/4/2018 11:45:10 am

I agree that C and D are both acceptable per FPH 6-264, Table 6.16.3, but B specifies upright sprinklers, and the table has requirements for ESFR pendent sprinklers.

9/4/2018 12:39:49 pm

C

not A: there is no standard spray orifice for 15' storage height and 30' max ceiling
not B: there is no upright sprinkler type for 15' storage height and 30' max ceiling
not D: there is no standard response for 15' storage height and 30' max ceiling

mhk

9/4/2018 07:19:22 pm

b. I found this in NFPA 30B table 6.4.2.7(b) since NFPA 13 says NFPA 30B to be referred.

Mark

9/5/2018 01:14:49 am

I agree with the table but it shows ESFR-pendent. I think the answer should be C.

MHK

9/5/2018 02:50:32 am

You are correct. I overlooked the type of sprinkler.

Pari

9/4/2018 11:27:58 pm

B, C or D are the right answer per Table 16.6.3 since this year NFPA 30 B is not included for the test

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PE Problem #66

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