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A 2 inch main drain (considered smooth opening) is opened to full drain capacity for a system with a pressure of 95 PSI. Approximately how much water (in gpm) will the drain flow assuming no friction loss? a. 420 gpm b. 925 gpm c. 1165 gpm d. 1460 gpm Solution | Posted 09/24/19 
6 Comments
Amr
9/23/2019 10:49:03 am
c. 1165 gym - NFPA FPH - Table 15.3.1 - p.15-44
Johnathan S
9/23/2019 10:54:46 am
C. 1165 GPM
Max
9/23/2019 11:49:15 am
As previously mentioned, tables or this formula Q=29.84*c*d*sqrt(p) gives answer of 1164gpm
B
9/23/2019 06:01:57 pm
Table 15.3.1 utilizes c=1.00 but this problem should reference c=0.9
john sternitzke
9/23/2019 07:55:49 pm
Q=29.84 x 2^2 X ^1/2 95 = 1,163.4 gpm
SK
9/30/2019 09:16:18 am
b. I would have gone option b. Considering Cd 0.9 and ID little less than 2, say 1.93 Black steel Leave a Reply. |
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