HomeMy WebLinkAboutFire Flow CalculationNEW BUILDING FOR
SEIDEL SCHROEDER AND COMP ANY
CITY OF COLLEGE STATION
JC JOB #C0007-005-00
FIRE FLOW CALCULATION
CALCULATED FLOW
Fire Flow at hydrant S09-0l 7:
With 98-psi pressure at Static Hydrant G-097:
Qr = 29.83cdD2.jP;
Q, = (29.83)(0.9)(2.5)2.J70=1,404 gpm
Qf = Qr (_P_s_-_2_0]0.54
Ps -Pr
(
98-20)0
'
54
QI = (1,404) 98 _88 = 4,257 gpm
Where:
Q, = residual flow at the pitot pressure (gpm)
Q 1 = Fire Flow (gpm)
cd = friction loss (usually 0.9 for smooth opening)
D = diameter of opening in inches (2.5 in most cases)
PP = pitot pressure (psig)
P, = residual pressure (psig)
Ps = static pressure (psig)
REOUIRED FLOW
Building Type= VB (Section 602 and 1505 of 2000 Internationa 73uz
Fire Area = 7,469 square feet (Section Bl04 of 2000 International Fire Code)
Required Fire Flow= 2,250 gpm (Table B 105.1 of 2000 International Fire Code)
Number of hydrants required= 2 (Table Cl05.l of 2000 International Fire Code)
RESULTS
4,257 gpm available > 2,250 gpm required = OK
3 hydrants available > 2 hydrants required = OK