Consider the following fire hydrant flow tests conducted at the same elevation: Test A: 75 psi Static, 60 psi Residual at 1,200 gpm Test B: 65 psi Static, 60 psi Residual at 1,800 gpm Test C: 70 psi Static, 45 psi Residual at 1,200 gpm Which of the following is true? a. Test A would provide better pressure than Test B for a 1,500 sqft Light Hazard sprinkler system. b. Test A would provide better pressure than Test B for a 3,000 sqft ESFR sprinkler system. c. Test B would always provide better pressure than Test C for any type fire sprinkler system. d. Both a and c. Solution | Posted 08/28/19
7 Comments
Nic
8/27/2019 08:28:33 am
a.
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Pari
8/27/2019 10:35:50 am
A
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John S
8/27/2019 10:50:54 am
C.
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SR
8/27/2019 12:42:09 pm
a.
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Richard Koenig
8/27/2019 03:18:04 pm
c
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SK
8/29/2019 09:14:54 pm
a
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Justin Stewart
8/14/2021 11:32:12 am
A. if you plot these flow tests you will see that at approximately 1000gpm is when Test B becomes a the best option. However, comparing Test B and C notice between the flow range of 0-276gpm Test C is the optimal choice.
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