HomeMy WebLinkAboutFire Flow CalculationAEROFIT WELLNESS CENTER
AT COLLEGE STATION MEDICAL CENTER
CITY OF COLLEGE STATION
JC JOB #C0007-01
FIRE FLOW CALCULATION
REQUIRED FLOW
Building Type = IIB (Section 602 and 1505 of 2006International Building Code)
Fire Area = 39,027 square feet (Section B104 of 2006International Fire Code)
Required Fire Flow = 4,250 gpm (Table 13105.1 of 2006International Fire Code)
50%reduction allowed for sprinkler system = 2,125 gpm (Section B105.2 of 2000International
Fire Code {75%) / Fire Marshall (50%))
Number of hydrants required = 2 (Table C 105.1 of 2000 International Fire Code)
Targeted Flow per Hydrant = 1,100 GPM
CALCULATED FLOW: FIRE HYDRANT #1
Fire Flow at hydrant Q-155: Where:
With 20-psi pressure at Static Hydrant Q-030: Qr = residual flow at the pitot pressure
(gpm)
Q, = 29.83cdD2 Pp Qf = Fire Flow (gpm)
Q, = (29.83)(0.9)(2.5)z 72=1,423.8 gpm Cd = friction loss (usually 0.9 for
Ps — 20)0.54 smooth2.5-in opening)
Qf = Qr� D = diameter of opening in inches (2.5
Ps — Pr in most cases)
Q j = (1,423.8)
88-20) PP = pitot pressure (psig)
RESULTS � 9,559.8 gPm —
88 — 86J P, = residual pressure (psig)
9,559.8 gpm available > 1,100 gpm targeted flow = OK PS = static pressure (psig)
CALCULATED FLOW: FIRE HYDRANT #2
Fire Flow at hydrant Q-125
With 20-psi pressure at Static Hydrant Q-123:
THIS DOCUMENT IS RELEASED
Q;=29.83CdD2 Pp
FOR THE PURPOSE OF:
REVIEW
11/23/2011
Q,=(29.83)(0.9)(2.5)Z 70=1,403.9 gpm
UNDER TIM AUTHORITY OF
0.54
Q —201j—Q,(fP�,
— P,
ADAM J. BRUMBAUGH, P.E. 108506
IIIS NOT TO BE USEDFOR
CONSTRUCTION, BIDDING, OR
S
Q = (1403.9)C90 — 2010S4 — 7,691.9 gpm
f 90— 77
PERMITTING PURPOSES.
RESULTS
7,691 gpm available > 1,100 gpm targeted flow = OK
Page 1 of 1
APPENDIX B
TABLE B105.1
MINIMUM REQUIRED FIRE -FLOW AND FLOW DURATION FOR BUILDINGS'
FIRE -FLOW CALCULATION AREA (square feet)
FIRE -FLOW
(gallons per minute)`
FLOW DURATION
(hours)
Type IA and IB°
Type IIA and IIIAa
Type IV and V-A°
Type IIB and IIIB°
Type V-Sb
0-22,700
0-12,700
0-8,200
0-5,900
0-3,600
1,500
22,701-30,200
12,701-17,000
8,201-10,900
5,901-7,900
3,601-4,800
1,750
30,201-38,700
17,001-21,800
10,901-12,900
7,901-9,800
4,801-6,200
2,000
38,701-48,300
21,801-24,200
12,901-17,400
9,801-12,600
6,201-7,700
2,250
2
48,301-59,000
24,201-33,200
17,401-21,300
12,601-15,400
7,701-9,400
2,500
59,001-70,900
33,201-39,700
21,301-25,500
15,401-18,400
9,401-11,300
2,750
70,901-83,700
39,70I-47,100
25,501-30,100
18,401-21,800
11,301-13,400
3,000
83,701-97,700
47,101-54,900
30,101-35,200
21,801-25,900
13,401-15,600
3,250
97,701-112,700
54,901-63,400
35,201-40,600
25,901-29,300
15,60I-18,000
3,500
3
112,701-129,700
63,401-72,400
40,601-46,400
29,301-33,500
18,001-20,600
3,750
128,701-145,900
72,401-92,100
46,401-52,500
33,501-37,900
20,601-23,300
4,000
145,901-164,200
82,101-92,400
52,501-59,100
37,901-42,700
23,301-26,300
4,250
164,201-193,400
92,401-103,100
59,101-66,000
42,701-47,700
26,301-29,300
4,500
183,401-203,700
103,101-114,600
66,001-73,300
47,701-53,000
29,301-32,600
4,750
203,701-225,200
114,601-126,700
73,301-81,100
53,001-58,600
32,601-36,000
5,000
225,201-247,700
126,701-139,400
81,101-89,200
58,601-65,400
36,001-39,600
5,250
-247,701-27I,200
L39,46I-T5230-D
--SS2T)1-97,700—
65,401-70,600
39,601-43,400
- 5500
271,201-295,900
152,601-166,500
97,701-106,500
70,601-77,000
43,401-47,400
5,750
295,901-Greater
166,501-Greater
106,501-1I5,800
77,001-83,700
47,401-51,500
6,000
4
—
—
115,801-125,500
83,701-90,600
51,501-55,700
6,250
—
—
125,501-135,500
90,601-97,900
55,701-60,200
6,500
—
—
135,501-145,800
97,901-106,800
60,201-64,800
6,750
—
—
145,801-156,700
106,801-113,200
64,801-69,600
7,000
—
—
156,701-167,900
113,201-121,300
69,601-74,600
7,250
—
—
167,901-179,400
121,301-129,600
74,601-79,800
7,500
—
—
179,401-191,400
129,601-138,300
79,801-85,100
7,750
—
—
191,401-Greater
138,301-Greater
85,101-Greater
8,000
ForSE Isquare foot=0.0929 ma, I gallon per minute =3.785 Um, I pound per square inch=6.895kPa.
a. The minimumrequired5re flow shall be allowed to be reduced by 25 percent for Group R.
b. Types of construction are based on thernternationalBuilding Code.
c. Measured at 20 psi.
394 2006 INTERNATIONAL FIRE CODE®
The provisions contained in this appendix are notmandatory unless specifically referenced in the adopting ordinance.
SECTION C101
GENERAL
C101.1 Scope. Fire hydrants shall be provided in accordance
with this appendix for the protection of buildings, or portions
of buildings, hereafter constructed.
SECTION C102
LOCATION
C102.1 Fire hydrant locations. Fire hydrants shall be pro-
vided along required fire apparatus access roads and adjacent
public streets.
SECTION C103
NUMBER OF FIRE HYDRANTS
SECTION C104
CONSIDERATION OF EXISTING FIRE HYDRANTS
C104.1 Existing fire hydrants. Existing fire hydrants on pub-
lic streets are allowed to be considered as available. Existing
fire hydrants on adjacent properties shall not be considered
available unless fire apparatus access roads extend between
properties and easements are established to prevent obstruction
of such roads.
SECTION C105
DISTRIBUTION OF FIRE HYDRANTS
C105.1 Hydrant spacing. The average spacing between fire
hydrants shall not exceed that listed in Table (2105.1.
C103.ZFirehydrantsavailable.Theminimumnumberoffire Exception: The fire chief is authorized to accept a defi-
hydrants available to abuilding shall notbe less than that listed ciency of up to 10 percent where existing the hydrants gro-
in Table C105.1. The number of fire hydrants available to a vide all or a portion of the required fire hydrant service.
complex or subdivision shall not be less than that determined
by spacing requirements listed in Table C105.1 when applied Regardless of the average spacing fire hydrants shall be
to fire apparatus access roads and perimeterpublic streets from located such that all points on streets and access roads adjacent
which fire operations could be conducted. to a building are within the distances listed in Table C105.1.
TABLE C105.1
NUMBER AND DISTRIBUTION OF FIRE HYDRANTS
FIRE -FLOW REQUIREMENT
(Wpm)
MINIMUM NUMBER
OFHYDRANTS
AVERAGESPACING
BETWEEN HYDRANTS"
(feet)
MAXIMUM DISTANCE FROM
ANY POINT ON STREET OR ROAD
FRONTAGE TO A HYDRANT°
1,750 or less
1
500
250
2,000-2,250
2
450
225
2,500
3
450
225
3,000
3
400
225
3,500-4,000
4
350
210
4,500-5,000
5
300
180
5,500
6
300
180
6,000
6
250
150
6,500-7,000
7
250
I50
7,500 or more
8 or more`
200
120
For SI. 1 foot= 304.8 mm, 1 gallonper minute = 3,785 L/m.
a. Reduce by 100 feetfor dead-end streets orroads.
b. Where streets areprovided with median divider. which cn I
_ese ]ides, or where arterial streets azeprovidedwithfour or more
traffic lanes andhave atrafHc count ofmorethan 30,000vebicles perdag hydrant spacing shall average 500feeton each side of the street and be arranged on an
alternating basis up to a fire -flow requirement of 7,OOD gallons perminute and 400 feetfor higher lire -flow requirements.
c. Where new watermains are extended along streets wherehydrants xrenotneededforprotection of Structures orsimilarfreproblems, firehydrants shall bepro-
vided at spacing not to exceed 1,000 feet to provide for transportation hazards.
d. Reduce by 50 feet for dead-end streets or roads.
e. One hydrant for each 1,000 gallons per minute or fraction thereof.
2006 INTERNATIONAL FIRE CODE® 395
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Date test completed Wednesday April 20, 2011
Time completed 9:10 A.M.
Test completed by Justin Tamplin
Witness
Location
Nozzle size
Hydrant number
Pitot reading in PSI
Flow in G.P.M.
nt number
1.91
1602 Rock Prairie
2.5
Q-155
72
1602 Rock Prairie
Q-030
88
Residual PSI 86
Comments Requested Flow
51455
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a*
Date test completed
Time completed
Test completed by
IQJ
Station
College i it
Reliable., Affordable, Community ty Owned
Wednesday April 20, 2011
8:50 A.M.
Vincent Rodriquez
Comments Requested Flow