PE Problem #63

8/30/2018

Determine the flow (in gpm) through an extended coverage pendent K16.8 sprinkler at 85 psi.
a. 52 gpm
b. 155 gpm
c. 348 gpm
d. 1428 gpm

Solution | Posted 09/03/18

11 Comments

FPE

8/30/2018 07:17:43 am

b. 155 gpm

Colleen

8/30/2018 08:52:56 am

B. 155 gpm

Q=K*sqrt(p) (per NFPA 13 23.4.2.5, rearranging slightly), get 154.888 gpm.

BOOM, easy one shot calculation. Hopefully the exam has a handful of these to allow more time to work out the more challenging problems.

Laura

8/30/2018 11:47:35 am

Yes! The exam does have a handful of these and theyre quick and easy! I took advantage of this formula for last years test.

rob

8/30/2018 09:09:38 am

154.88

8/30/2018 09:37:26 am

Answer: b.

Source: 2018 MeyerFire PE Prep Guide - pg. 146

8/30/2018 09:47:11 am

Pari

8/30/2018 10:40:16 am

B- 155GPM

8/30/2018 10:49:02 am

Agreed. Finally one answer this lurker can do blindfolded with one hand tied behind his back and still beat the buzzer.

8/30/2018 10:54:26 am

Wait, too easy; must be a trick question. 85 is the EHP, right?

MIGUEL ARTURO NUNEZ

8/30/2018 04:47:51 pm

8/30/2018 06:03:00 pm

B. 155 gpm

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