HomeMy WebLinkAboutFire Flow Report0 P- C) q -')t
FIRE FLOW ANALYSIS
UNDER THE IFC 2000
For:
Vision Mission Church
(formerly the Korean Mission Church of Texas A &M)
Prepared By:
CSC Engineering & Environmental Consultants, Inc.
April 26, 2004
F
0 0NUN, ,IS. /
44.481 a. • DC
�C • 1D
SUMMARY OF FIRE FLOW ANALYSIS
(Code Analysis Per International Fire Code 2000)
I. BUILDING INFORMATION
Building
T
III B
Minimum Distance
Flow
Number
Number of Stories:
One (1)
2
of
Hydrants
Between
Hydrants
feet
Building
Fire Area:
14,400 square feet
2
Fire Flow Requirement of
Building
Use:
Church
1,500 gpm
Building
Sprinkled:
Yes
II. CODE ANALYSIS — REQUIRED FIRE FLOWS AND DURATION
Minimum Required Fire Flow and
Flow Duration for Buildings
Table B105.1 from l FC 2000
FIRE FLOW
(gallons per
minute
FLOW
DURATION
ours
Minimum Distance
Flow
Number
For Building Type III B of 14,440 square feet size
2,500
2
of
Hydrants
Between
Hydrants
feet
Street or Road
Frontage to a
Hydrant feet
Reduction in required fire flow of up to 75 percent because
building is sprinkled
625
1 '
2
Notes:
a. Resulting fire flow (from sprinkler reduction) shal not be less that 1,500 gallons per minute (Section B 105.2 of
IBC 2000)
III. CODE ANALYSIS — NUMBER AND DISTRIBUTION OF FIRE HYDRANTS
(Table C105.1 from IFC 2000)
Fire
Minimum
Average
Minimum Distance
Flow
Number
Spacing
from Any Point on
Requirement
(gamems per minute)
of
Hydrants
Between
Hydrants
feet
Street or Road
Frontage to a
Hydrant feet
Fire Flow Requirement of
1
500
250
1,500 gpm
Appendix B
FIRE -FLOW REQUIREMENTS FOR BUILDINGS
SECTION B101
GENERAL
B101.1 Scope. The procedure for determining fire -flow re-
quirements for buildings or portions of buildings hereafter con-
structed shall be in accordance with this appendix. This
appendix does not apply to structures other than buildings.
B104.3 Type IA and Type IB construction. The fire area of
buildings constructed of Type IA and Type IB construction
shall be the area of the three largest successive floors.
Exception: Fire area for open parking garages shall be de-
termined by the area of the largest floor.
SECTION B105
FIRE -FLOW REQUIREMENTS FOR BUILDINGS
SECTION B102
DEFINITIONS
B102.1 Definitions. For the purpose of this appendix, certain
terms are defined as follows:
FIRE AREA. The floor area, in square feet, used to determine
the required fire flow.
FIRE FLOW. The flow rate of a water supply, measured at 20
pounds per square inch (psi) (138 kPa) residual pressure, that is
available for fire fighting.
SECTION B103
MODIFICATIONS
B103.1 Decreases. The fire chief is authorized to reduce the
fire -flow requirements for isolated buildings or a group of
buildings in rural areas or small communities where the devel-
opment of full fire -flow requirements is impractical.
B103.2 Increases. The fire chief is authorized to increase the
fire -flow requirements where conditions indicate an unusual
susceptibility to group fires or conflagrations. An increase shall
not be more than twice that required for the building under con-
sideration.
B103.3 Areas without water supply systems. For informa-
tion regarding water supplies for fire - fighting purposes in rural
and suburban areas in which adequate and reliable water supply
systems do not exist, the code official is authorized to utilize
NFPA 1142 or the IFCI Urban Wildland Interface Code.
SECTION 8104
FIRE AREA
B104.1 General. The fire area shall be the total floor area of all
floor levels within the exterior walls, and under the horizontal
projections of the roof of a building used to protect storage or
use areas, except as modified in Sections B 104.2 and B 104.3.
B104.2 Area separation. Portions of buildings which are sepa-
rated by fire walls without openings constructed in accordance
with the International Building Code are allowed to be consid-
ered as separate fire areas.
B105.1 One- and two -family dwellings. The minimum fire
flow requirements for one- and two - family dwellings having a
fire area which does not exceed 3,600 square feet (344 m shall
be 1,000 gallons per minute (3785 Umin). Fire flow and flow
duration for dwellings having a fire area in excess of 3,600
square feet (344 m shall not be less than that specified in Table
B105.1.
Exception: A reduction in required fire flow of 50 percent,
as approved, is allowed where the building is equipped
throughout with an approved automatic sprinkler system in
accordance with Chapter 9 of the International Fire Code.
B105.2 Buildings other than one- and two -family dwellings.
The minimum fire flow and flow duration for buildings other
than one- and two - family dwellings shall be as specified in Ta-
ble B105.1.
Exception: A reduction in required fire flow of up to 75 per-
cent a �pjroved is allowed wh en the building ispro a __
with an app roved automatic spnnkler system installed in aS
._...__
c ordance with S 9_0_3 or 9 03.3.1.2 of the I n te rn -_
tional Fire Code. The resulting fire flow shall not be less
than 1,500 gallons per minute (5678 Umin.).
SECTION B106
REFERENCED STANDARDS
NFPA 1142 Standard on Water B 103.3
Supplies for Suburban
and Rural Fire Fighting
IFCI UWIC Urban Wildland B 103.3
Interface Code
2000 INTERNATIONAL FIRE CODE® 357
APPENDIX B FIRE -FLOW REQUIREMENTS FOR BUILDINGS
TABLE 8105.1
MINIMUM REQUIRED FIRE FLOW AND FLOW DURATION FOR RWLDINGS
FIRE AREA (square feet)
FIRE FLOW
(gallons per minute)
FLOW
DURATION (hours)
Type IA and 113*
Type IIA and IIIA'
Type IV and V A'
Type 116 and IIIB'
Type V B'
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
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
4
247,701 - 271,200
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
For SI: 1 square foot = 0.0929 m 1 gallon per minute = 3.785 Lm, 1 pound per square inch = 6.895 kPa.
a. Types of construction are based on the International Building Code.
b. Measured at 20 psi.
358 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. L The number of fire hydrants available to a
complex or subdivision shall not be less than that determined
by spacing requirements listed in Table C 105.1 when applied to
fire apparatus access roads and perimeter public streets from
which fire operations could be conducted.
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.
TABLE C105.1
K—SER AND ni43TRIRI1TIAN OF FIRE HYDRANTS
FIRE -FLOW REQUIREMENT
(911m)
MINIMUM NUMBER
OF HYDRANTS
AVERAGE SPACING
BETWEEN HYDRANTS' b, °
(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
150
7,500 or more
8 or more'
200
120
For SI: 1 foot = 304.8 mm, 1 gallon per minute = 3.785 Um.
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 atraffic 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.
2000 INTERNATIONAL FIRE CODE®
359