HomeMy WebLinkAboutFire Flow ReportPOST OAK VILLAGE RENOVATIONS
CITY OF COLLEGE STATION
JC JOB #C0007-07
FIRE FLOW CALCULATION
CALCULATED FLOW
Fire Flow at hydrant E-040:
OF Tfhgs With 20-psi pressure at Static Hydrant E-039: fflf
Q,. = 29.83cd P i *:
/ SMW E. DUNCAN
Q,. = (29.83)(0.9)(2.5)2 37=1,020.6 gpm eel, a' ..... 83252 .........
Qf = Qr PS — 2010.54 jfflp�!/�• G\��
CPS — Pr /
I
Q f = (1020.6)r100 — 20o.sa 1 = 6,010.1 gpm
100 — 97 J
Where:
Q,. = residual flow at the pitot pressure (gpm)
Qf = Fire Flow (gpm)
cd = friction loss (usually 0.9 for smooth 2.5-in opening)
D = diameter of opening in inches (2.5 in most cases)
PP = pitot pressure (psig)
P,. = residual pressure (psig)
PS = static pressure (psig)
REQUIRED FLOW
Building Type = IIB (Section 602 and 1505 of 2006International Building Code)
Fire Area = 6,288 square feet (Section B 104 of 2006International Fire Code)
Required Fire Flow = 1,750 gpm (Table B 105.1 of 2006International Fire Code)
Building is not sprinkled.
Number of hydrants required = 1 (Table C105,1 of 2000International Fire Code)
RESULTS
6,010.1 gpm available > 1,750 gpm required = OK
1 hydrants available = 1 hydrants required = OK
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 IIIA°
Type IV and V-A°
Type IIB and IIID°
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
97,701-112,700
54,901-63,400
35,201-40,600
25,901-29,300
15,601-18,000
3,500
3
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
193,401-203,700
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
247,701-271,200
D99 01-152,600--
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
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
-
-
145,901-156,700
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
Par SI: 1square foot=0.0929m� Igallon per minute=3.785 Llm, 1 poundpersquare inch=6.895kPa.
a. The minimum required fire flow shall be allowed to be reduced by 25 percent for Group R.
b. Types of construction are based on thelnfernalional Building Code.
c. Measured at 20 psi.
394 2006 INTERNATIONAL FIRE CODE®
APPENDIX C
FIRE HYDRANT LOCATIONS AND DISTRIBUTION
The provisions contained in this appendix are not mandatory 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 C105.1.
C103.1 Fire hydrants available. The minimum number of fire Exception: The fire chief is authorized to accept a defr-
hydrants available to a building shall not be less thanthatlisted ciencyofuptolOpercent where existing fire hydrants pro -
in Table C105.1. The number of fare 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
tofire apparatus accessroadsandperimeterpublicstreets 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 OP Flat RvnoANTO
FIRE -FLOW REQUIREMENT
(9Pm)
MINIMUM NUMBER
OFHYDRANTS
AVERAGE SPACING
BETWEEN HYDRANTS4 a•°
(feet)
MAXIMUM DISTANCE FROM
ANY POINT ON STREET OR ROAD
FRONTAGE TO A HYDRANTd
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
Yor Sl: 1 toot = 304.8 min, 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 we 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
alternating basis up to a fare -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 forpmtection of structures or similar fire problems, &e 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.
2006 INTERNATIONAL FIRE CODE® 395
allege Station Utilities
Reliable, Affordable, Community Owned
Date test completed Wednesday September 7, 2011
Time completed
Test completed by
9:30 A.M.
Vincent Rodrigue
Comments Requested Flow
rJONES&CARTER,INC.
ENGINEERS• PLANNERS- SURVEYORS
August 24, 2011
Josh Norton
City of College Station
1101 Texas Avenue
College Station, Texas 77840
Re: Drainage Letter
Renovations to Post Oak Village Shopping Center
JC Job No. C0007-07
Dear Mr. Norton,
1716 Briarcrest Drive, Suite 160
Bryan, Texas 77802-2776
AUSTIN
HOUSTON
SAN ANTONIO
BRYAN/COLLEGE STATION
TEL 979 7318000
FAX 979 846 2893
DALLAS
BRENHAM
ROSENBERG
THEWOODLANDS
Texas Board of Professional Engineers Registration No.: f-439
The 3.43 acre Post Oak Village Shopping Center includes an a single existing 37,000 sf retail shopping
center, and is located on the east corner of Harvey Road and Dartmouth. The proposed renovations to the
Post Oak Village Shopping Center property includes the demolition and permanent removal of
approximately 3,900 sf of existing retail space located on the northeast end of the shopping center. This
renovation also includes the addition of new pavement and landscape islands to replace the area of the
building being removed.
These proposed renovations of the shopping center result in insignificant changes in runoff rates and will
not adversely affect neighboring properties
yC.tE Of TElgstl,l
i * ; lli���VVIAr
e. STEVE E. DUNCAN
I -o'•
83252 ;
1 t► S3/ONAL E��
SEDldmw
Sincerely,
Steve E. Duncan, P.E. LEEDO AP
Vice President
Bryan/College Station Operations Manager
Smart Engineering. Smart SolutionsW www.jonescarter.com