HomeMy WebLinkAboutFire FlowFIRE FLOW REPORT
FOR
Proposed Building on
Baumann Tract
LOCATED IN
COLLEGE STATION, TEXAS
PREPARED FOR
THE CITY OF COLLEGE STATION
March, 2012
by
Bleyl & Associates
Project Engineering & Management
Texas Board of Professional Engineers: F -678
Bleyl Project No. 10576
1722 Broadmoor, Ste 210
Bryan, Texas 77802
(979) 268 -1125 ph
(979) 260 -3849 fx
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SAM J. VERN
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This report shows that all City of College Station fire hydrant codes have been met for the proposed
building site.
The proposed building will have a total area of 3,750 square feet, and will consist of a concrete slab,
steel frame, and brick veneer.
Under the International Building Code (2009) - Chapter 6 - Section 602, this building satisfies the
criteria for a Type III construction. In order to be conservative in determining the required fire flow,
the Type IV construction criteria will be used instead. As outlined in section 602.4, this building meets
all requirements of a Type IV construction.
Type IV Construction Section 602.4 of the International Building Code:
Type IV construction (Heavy Timber, HT) is that type of construction in which the exterior
walls are of noncombustible materials and the interior building elements are of solid or
laminated wood without concealed spaces. The details of Type IV construction shall comply
with the provisions of this section. Fire - retardant - treated wood framing complying with
Section 2303.2 shall be permitted within exterior wall assemblies with a 2 -hour rating or less.
Based on the determined building construction type and the building's square footage, the City of
College Station fire flow requirements, outlined in Table B105.1, requires our building to have
minimum fire hydrant flow of 1,500 gallons per minute.
Also, under the number of fire flow requirements, outlined in Table C105.1, this building is required to
have a total of one fire hydrant.
Both City of College Station tables are included in this report.
College Station Utilities did a flow test on a pre - existing fire hydrant located near the proposed
building. The test flow report is attached to this report. The results indicated that at free flow
conditions, the fire hydrant flow was 1,590 gallons per minute. The following graph indicates that trhe
flow corresponding to the minimum twenty pounds per square inch pressure is more than adequate to
meet the minimum requirements:
120
100
80
60
40
20
0
-20
0
2000
Fire Flow at Existing Fire Hydrant
4000
6000
Flow (GPM)
8000
10000
• CSU Report Data Linear (CSU Report Data)
12000
FIRE -FLOW REOUIREMENTN
(gpm)
MINIMUM NUMBER
OF HYDRANTS
AVERAGE SPACING
BETWEEN HYDRANTS'' c
(feet)
MAXIMUM DISTANCE FROM
ANY POINT ON STREET OR ROAD
FRONTAGE TO A HYDRANT
1,750 or less
1
500
250
Z000-2,250
2
450
225
2,S00
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
150
7,500 or more
8 or moree
200
120
2000 INTERNATIONAL FIRE CODE®
Appendix C
FIRE HYDRANT LOCATIONS AND DISTRIBUTION
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
C103.1 Fire hydrants available. The minimum number of fire
hydrants available to a building shall not be less than that listed
in Table C105.1. The number of fire hydrants available to a
complex or subdivision shall not be less than that determined
by spacing requirements listed in Table C105.1 when applied to
fire apparatus access roads and perimeter public streets from
which fire operations could be conducted.
TABLE C105.1
NUMBER AND DISTRIBUTION 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 C105.1.
Exception: The fire chief is authorized to accept a defi-
ciency of up to 10 percent where existing fire hydrants pro-
vide all or a portion of the required fire hydrant service.
Regardless of the average spacing, fire hydrants shall be lo-
cated such that all points on streets and access roads adjacent to
a building are within the distances listed in Table C105.1.
For SI: 1 foot = 304.8 mm, 1 gallon per minute = 3.785 Lim.
a. Reduce by 100 feet for dead -end streets or roads.
b. Where streets are provided with median dividers which can be crossed by fire fighters pulling hose lines, or where arterial streets are provided with four or more
traffic lanes and have a traffic count of more than 30,000 vehicles per day, hydrant spacing shall average 500 feet on each side of the street and be arranged on an al-
ternating basis up to a fire -flow requirement of 7,000 gallons per minute and 400 feet for higher fire -flow requirements.
c. Where new water mains are extended along streets where hydrants are not needed for protection of structures or similar fire problems, fire hydrants shall be pro-
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.
359
FIRE AREA (square feet)
FIRE FLOW
FLOW -
DURATION (hours)
Type IA and IB'
Type OA and 111A'
Type 1V and V -A'
Type 118 and IIIB'
_ Type V -B'
(gallons per minute?'
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
39,701- 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
3
97,701- 112,700
54,901- 63,400
35,201- 40,600
25,901- 29,300
15,601 - 18,000
3,500
112,701 - 128,700
63,401- 72,400
40,601- 46,400
29,301- 33,500
18,001 - 20,600
3,750
128,701- 145,900
72,401- 82,100
46,401- 52,500
33,501- 37,900
20,601- 23,300
4,000
4
145,901 - 164,200
82,101 - 92,400
52,501- 59,100
37,901- 42,700
23,301- 26,300
4,250
164,201 - 183,400
,
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 - 271
139,401- 152,600
89,201- 97,700
65,401- 70,600
39,601- 43,400
5,500
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 - 115,800
77,001- 83,700
47,401 - 51,500
6,000
-
-
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
APPENDIX B
TABLE 8105.1
MINIMUM REQUIRED FIRE FLOW AND FLOW DURATION FOR BUILDINGS
For SI: I square foot = 0.0929 m 1 gallon per minute = 3.785 Um, I pound per square inch = 6.895 kPa.
a. Types of construction are based on the International Building Code.
b. Measured at 20 psi.
358
FIRE -FLOW REQUIREMENTS FOR BUILDINGS
2000 INTERNATIONAL FIRE CODE®
Date test completed
Time completed
Test completed by
Witness
Comments
College Station Utilities
Reliable, Affordable, Community tarred
Wednesday February 29, 2012
1:00 P.M.
Justin Tamplin
Gerald Borths
Requested
FLOW HYDRANT
Location
Nozzle size
Hydrant number
Pitot reading in PSI
Flow in G.P.M.
2901 Texas
2.5
F -040
90
1590
STATIC HYDRANT
Location
Hydrant number
Static PSI
Residual PSI
3001 Texas
F -031
107
101