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A project site is connected to a water tank through an equivalent 650 feet of 6-inch schedule 10 pipe (c-factor of 140). If the water tank is 165 feet above the project site, the fire flow available at the project site is most nearly: a. 1,300 gpm b. 2,100 gpm c. 2,400 gpm d. 8,700 gpm Solution | Posted 10/10/18 
10 Comments
Vince
10/9/2018 08:19:21 am
1,300 @ 49.39
Jimmy
10/9/2018 06:24:02 pm
A. My logic would be to say Pt=71.46psi. Pv + Pp at the given flows are 23.4 psi, 56.7 psi, 73 psi and 748 psi. What's the required delivery pressure? You end up @ 54psi, 17.5psi, 0, & impossible. Any answer below 54 psi won't spray for beans--not exactly useful to fight a fire, right?
FPE
10/9/2018 10:05:47 am
c. 2,400 gpm,
Pari
10/9/2018 11:08:45 am
C ,2400 gpm
Vince
10/9/2018 12:43:32 pm
Friction loss in 650 ft of 6" @ 140 =22.22 psi. Doesn't that play a part here?
migdalia guzman
10/9/2018 11:47:27 am
C, 2400 GPM
MHK
10/9/2018 07:32:52 pm
b. 2,100 gpm
Ed
10/9/2018 09:44:00 pm
c. if you are supplying a pump (much higher full than that and the pressure at the pump suction would drop below zero). Without a pump it would be a. or b. depending on the sprinkle systems required pressure. I used Hazen Williams and solved for the the three lowest flow rates individually. Is there a direct way to solve?
AJ
10/11/2018 09:13:04 am
Are these the same problems as in the Meyer PE Guide?
Joe Meyer
10/11/2018 09:58:08 am
Hi AJ, Leave a Reply. |
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