HomeMy WebLinkAboutFire Flow ReportPATTIS ENGINEERIN~
ENGINEERS + CONSULTANTS
P.O. Box 13461, College Station, Texas 77841 * P: 979.575.5022 * F: 979.268.0150
Fire Flow Analysis
Fish Daddy's Restaurant
May 30, 2007
FIRE FLOW DESIGN
The Fire Flow Analysis and Design for the above referenced project was developed in accordance
with 'Appendix B -Fire Flow Requirements for Buildings ' and 'Appendix C -Fire Hydrant
Locations and Distribution ' of the 2000 International Fire Code (Attachment #1). Please see
Attachment #2 for project site plan and location of the proposed fire hydrant(s).
EXISTING 8" WATER MAIN DATA
Test Fire Hydrant Location:
Average Static Pressure
Average Residual Pressure
Flow Under Fire Conditions:
PROJECT CONST ANTS
Fire Area (s.£)
Type of Construction
Required Fire Hydrant Flow (per IFC)
Required Min. Residual Pressure
#of Hydrants Required (per IFC)
Project Water Line
Distance to Fire Hydrant
Fire Suppression System (Sprinkler)
=
=
=
=
=
=
1611 University Drive
90 psi
82 psi
1,455 gpm
5,282 s.£
Type V-B
1,500 gpm (w/Sprinkler System)
20 psi
1
6" A WWA C909 PVC
30 feet
650 gpm (mirI.)
FIRE HYDRANT & FIRE SUPPRESSION LINE
COMBINED FLOW CALCULATIONS
Water Main Flow Rate Velocity
Pipe Dia. (gpm) (fPs)
(in.)
8 2,150 13 .72
FIRE HYDRANT FLOW CALCULATIONS
Pipe Dia. Flow Rate Velocity
(in.) (gpm) (fps)
6 1,500 17.02
FIRE SUPPRESSION LINE FLOW CALCULATIONS
Pipe Dia. Flow Rate Velocity
(in.) (gpm) (fps)
6 650 7.38
In summary, the IFC states that a 5,282 square foot building with Type V-B construction requires
2,000 gallons per minute (gpm) fire flow protection with two hydrants. Since the Fish Daddy's
Restaurant will be providing a fire suppression system (sprinkler), the IFC allows for a reduction
in required fire flow of up to 75%. However, minimum standards apply, thus requiring 1,500
gpm for the existing fire hydrant. A separate tap to the 8" water main along University Drive
will be installed to provide a dedicated fire suppression line with an isolation valve for the
sprinkler system.
Please call me if you have any questions.
ATTACHMENT #1
'Appendix B -Fire Flow Requirements for Buildings ' &
'Appendix C -Fire Hydrant Locations and Distribution '
of the 2000 International Fire Code
Appendix B
FIRE-FLOW REQUIREMENTS FOR BUILDINGS
SECTION B 101
GENERAL
BlOl.1 Scope. The procedure for determining tire-flow :e-
quirem~ncs for buildings or portions of buildings hereafter con-
structed snall t><~ m accoroince wi.tb tl1is ap [.lenoix. This
appendix does not apply to s:nictures other than buEdings.
SECTION B102
DEFINmONS
B 102.1 For the purpose of this appendix. certain terms are de-
fined a~ follows:
:t'lRE AREA. The floor area, in squar(; f~t, used to dclerminc
the ~quire>Ji fi.l"l". flow.
FIRE FLOW. The flew ra.te of a water supply, measured at 20
pou&ds pu :>quare inch (psi) (138kPa) residu:il pr~ssure. tha: is
available for tire figlltmg.
SECTION B 103
MODIFICATIONS
B103.l Decreaes. The fire chief is aut.1orized ro reduce the
fire-now requiretr.enr~ for isolated buildings or a grou;> of
bui1dl:ngs in <w:al at'CIU vi. ~ul.llll «.:0Uill1uu.iui:s whcm: !.ho: <l~vcl
opment of fu;t fire.flow requirements is impractical.
B103.2 Increases. The fire chief i.& l\i,hcrized to increase the
fire-flow requirements where condijons indicate an unus1,1al
s~l>Ceptibility to gro,;p fires or conflagrations . An increase shall
not be more than twice that requittd for the building under ccn-
sidenuion.
B103.3 Areas without water supply systems. For i.'lfomia-
rion tegardi.ng water i;1,1pplie~ for ii.re-fighting purposes in rural
and suburb~n areai> in w!tich adequate and reiiable wa:er supply
systems do not Chist, the code official is authorized to utilize
NFPA 1231 or the IFCI L'rbar. Wildiand Interface Code.
SECTION 8104
l=IR.E AREA
B104.1 General. The fire area shall be the total Zloor ar¢;,;. cf all
fioor levels wit.1ir. the exterior walls. and under the horiz.cntal
projections of th¢ :oof ot' a blll.l'1mg used to ptotec' storage or
use areas. except as :n:>dified in S"tions B l04.2 a.nd Bl04.3.
B104.1 Arl!:t $epQ:nation. Portiom ()fbuilc.i.ngu wbi<:b ure :>cpa-
raterl t:y fire walls without openings c~nstructed in accordance
with the l1ttematio11al Bui!ding Code are allowed tc be consid·
ered it.S $eparate fu-e ;i.rens. ·
2000 INTERNATIONAL FIRE cooee
1-t".:l<:; I N-=!Wr11T11.'\ 1(; ~;:!O'.:.' ...... -··············.
lH04.3 Type IA wid. 'l)'pe IB constructioo. The fi~e area o:
liuiirlineQ ('oMtnu~;~n of Ty{'W': TA 11nd 'iy£1~ T~ <~l)n~tm('lil'ITl
~h:ill be the area of the three largest successive fl..oon.
Exception; Fire area fQr open parking gar:iges shall be de -
rermmr.d l:>y tl:e area of t.1e largest floor.
SECTION 8105
FIRE-FLOW REQUIREMENTS FOR BUILDINGS
Bl05.l One-and two-family dwellingi;. The mi.'l..imwn fue
flow requitem~tm for one-and two-fa..'1'lily dwellings having a
fire area wbicll does not exceed 3.600 square feet (344 m~) sh:d!
be l ,000 g4lllons per rn.rnu~ (:!785 LJmi.1.), Pi.re flow .-.nd flow
duration for dweUings having a fi:e arel\ in e.xcess of 3,600
square feet (344 m•) shall not be les$ tlla.'1 that specified in Table
T:l!OS.L
Exception: A mfactio;1 in tetjUired fire flow of .SO perce:it,
as approvf'.d, ii a.llowed where thl' bui!.dir.g i~ equipped
:hroughout w1th an $pprovi!d. tutomatic sprinkler sysrem in
accordartee with Cha?tel 9 of the lntematio~I Firv Code
.IH05.l Buildings other than one-and two-family dwellings.
Tl:e minimum fire flow and tlow durlition for !n1ildings other
than one-and two-fiunilv dwell:n,gs shall be a$ zpe.cified in Ta-
ble B 105. l. -
Exception: A rec:bcti~n in required fire flow of up to 7 5 pe.r ·
.;;cul, iU "Ptl1i.IY~, i~ .i!lvweJ wl!1:;1 ~Iii; b11illli.u.g ii> provi:.lcc.l
wich an approved automatic sprinkler :.ystem installed in ac-
cordance with Section 5'03.3 . l l or 903.:U .2 of the Inrerna -
riofllll Pif'I! Code . TI1e resulting fue now shall not be :ess
rhan 1,500 ga.llons per minute (5678 L'min.J.
357
APP£NOIX6 FIRt:-FLOW REQUIREMENTS FOR BVILOINQS iASLE 6105.i MINIMUM AEOUlfiEO F!RE FLOW ANO !=LOW OUP.ATION FOR BUILDINGS Fl~i AREA (otqu;a"' !Ht) j FIRE l'LOW FLOW~ Ty .... LA ...... tn• Tlfpe ru. and 111.A• I ~IV and V·A" I """" 118....d1118' I ,.,,,. v-a· l1 .. a.11nn• pctr mJnuCA>)" OURATION ~IK>urtl I 0-22.700 0.12,700 0-8.200 -!----O-S,9_QC~ __ __Q:_3.~ I~---22.701-30,200 12.701·1?,000 s..201.10,900 '. 5',901-7,900 3.601-1,800 I I.750 I ! 30.201-38.700 !'7,(X)J.21.800 10,901-12,900 ' 7,90J-9,800 4.801-6.200 I -2.000 l i I ! 38,701-48.300 :!l.801-24,200 12,901-17,400 ! 9,&01·12.600 6,20l-7,7GO I 2,450 I i . . I 48,301·59,000 24,201->3.2_:.'10 17.401-21,JOO I 12,601-JS,400 7.701-9,400 2.500 I I 59,0C·J-70,900 I 33,201-39.700 21,301-2.5,5()) : -.· . .?.4·0· l····lg . .4(10··· 9,401-ll,300 ::.750 I ~ 70,901-83,700 i 39,701-47,JOO I 25,501-30,100 l l~.._401-21,SOO -ll.30i-l3.400 _'.\,~ I 83,701-97.700 I 47.101-54.900 30,101-35.200 ! 2!.Bot 25.900 13,401-15,600 3.250 I ~1.101-112.100 54.901-63.400 3s.201-4o,6oo 2s.901-29,:;00 1 s.601-1s.ooo 3.soo ~l112,7Cl·l28.700 63.40l~i2,400 40,601-46,400 29.301-33,500 !& .. ,001-20,600 , 3.750 ?8.701-145.000 I 72.41}1-82.100 L 46AOl-52.500 33,SOl-37,900 20.601-23.300 I 4,000 I I 4S.901-t64:200 I 52.101-92.400 I s:z.~o~-sc;,100 I 37,90142,700 I 23.301-26.300 l 4,250 164,Wl-lSJ,400 I '92.AH-103,100 i 59,HH-66.000 I 42,701-4i.700 I 26.301·29,300 ! 4,500 ll!!J,4(.)l-:2.03,700[ lU3J()_l-ll4,60:> l 66,001-73,300 ! 47.701-53.000 l 29.301-32.600 I 4.750 203,101-225.200 ! u4.§0J·l26,100 l n,Jm.guoo S3.:l01-58.6l"O I 32.601-36,000 S.000 ! 1 7:2S.20l-247."IOQ ~ 126.701-139.400 I 81,101-89 200 I ~8.tiOl-0-',400 ~H.'.001-JY.f>Ol• 5,250 I r-1241,:01-21i.200 i 1~9.401-1s2.600 I 89.201-97.700 · 65.401-10,600 39.601-43.400 s.soo i 271.Wr-WS.!IOO i ~52,6!ll-l66,.500 ! 97,701-106,SOO 7U.60i-77.000 43,4CH7,4'JO :i.i)U r---·:--. I ~195,901·<marer 166.5'Jl·Om1:.er Lloe,501-lJS.BOO 77,0C!-83,700 47.401-51,500 I 6.000 ____ ___J_J1_~_.§0!-!25,SW I 33,70 4 ' I 1·90.600 51,501-55,700 -_1 -=----1 125.501-135.500 90.601-97.900 55.701-60.200 6,500 i ~ -i 135.50) 145,800 ~7.!X>l-106,SOO 60,201-64.800 6.75~ I -I l45,801-156.700 106,801·113,200 64.801-69,600 7,00C I I -: l"i1',70!-i67.fl00 JI 1.201-121,300 69,601-''M,600 7,2SC I I -t ---L1§i,201-179,400 I 121.)01-129.600 74,601-79.8()() I 7,SOC 179.401.11;1,400 l2Q.601.13S,l00 79,SlOl-~S.100 7.750 ! --1 191.401-Grea!er :3S.3Cl·Grea:e.r ! 85.101-Gruter ___ 8:;.:.000=:;__ _ _._ _____ ~ Fer S! I :;;uurc foot~ 0.0929 rn2, 1 saHon ixr lllin~le "'· :i.n5 Lm,, I pound llC' "lllllfe in~h = 6.895 kPa. ~ Types of cons;n.;ct10~ ~re bai;~d or. the /alar.auo>td Si.i/<.'.ini: Cati;. b. M~".-u~d ur ~ ?"· 3!iO 2000 INTERNATIONAL FIRE coo~ ._('"I ,,-,··, -it"~µ I >1-:l•::: I ~W~J"Yl~/\ ~c c.:1n:1 %t:rE.79LoLo 7::11 t06~/1Ei80
Appendix C
FIRE HYDRANT LOCATIONS AND DISTRIBUTION
SECTION C101
GENERAL
ClOl.l Scope. Fire hyd.rantb !hall be ptovided in accordance
witb thh api:xndix for t.11<: pro~etion c.fbr,tildinss. o: portione of
buildings. hereafter constr1.:cted.
SECTION C102
LOCATION
Cl 02.1 Fire hydrant iocat.ion.s. Fite hydrants shall be pro-
vided a'..ong required fire appa:alus ac~~ss roads and acjacent
public ~t~e.ts
SECTION C103
NUMBfFI 01' FIRE HYDRANTS
C103.l Fire hydrants available. The minimum number of ii.re
hydrants 1n·ailab!e to a building shall not be less t'lan that listed
in Table C105.l. The number of fire hvd:ant~ i\Vailable to a
comple.i. or ~u00ivi9io.n shall not be less than that determined
by spacing rcquiremen ts listed in Ta bl~ Cl 05 .1 w::i.en applied to
fire apparatus acce~ roads and pu'..meter public str"..ets from
which fire .ipe~ations could be: conducted.
SECTION C104
CONSIDERATION OF EXISTING FIRE HYDRANTS
C J04.1 Existing fire hydrants. Existing fire nydrams on pcb-
lic strr.ets are :illowe\1 to be con)i<lcrcJ ll.~ ~vi.Ulublc . .EJ1.hlit1i;
fire htdranrs on adjacent properties shall not be cons:dued
available unless fire apparatus access roacs extend between
properties and easements a.re i:stab!ished to prevent obstnictiou
of sud: reads.
SECTION C105
DISTRIBUTION OF FIRE HYDRANTS
Crns.I Hydrant spaciiw;. n~e a"-erage spacing between fire
hyd.rants shs!l not <}Xceeci that listed in Table Cl05. ! .
Exception: The fire chief is authorized :o accept a defi-
ciency of up to 10 percent where existing fire hydran~s pro-
vide all or a portion of the required fire hydran1 service.
Regiudles~ of the average spacing, fin! hydrants shall be lo-
cated such that all points on streets and access roads adjaceni to
a build~n~ are within the distances listed in Table Cl05. 1.
TABLE C105.1
NUMBER ANO CISTRIBUTION OF FIRE HVORA.NTS
~-~~~~~~~~~~~~~~~~~~-
I flAll-FLOW REQUIRiMliNT MINIMUM NUM&£R hn~ml OF HYOR4HTS_
I J.750 or less l
! 2.000·2,2!'0 2
i 2,500 3
I 3,000 3
! 3.500-4,00C 4 r----· i 4.500 5,000 5
i 5.500 6
'-----6,000 6
6.500. 7 .000 i
for SI: l foot~ 3"'.3 mm. 1 g:Jlon p« minut::: = 3.785 Um
~ Rede<·c by I 00 f ::::t fol' dead-cw •t:=ts or ~lid..
I i I
AVERAGE SPACING
BETWE:EN HYCR.O.NTii" o. c
---(fOO
50tJ
4)0
450
400
350
300
300
250
250
200
-
ANY PO!Nl' FROJllTA
M.tXIMUM DISTANCE FROM
ON ST!\EET OJI ROAD OE TO ;.. HVOA.IJ>IT'
250
I __ 2;;;.2-~------1
I
-...,------225 ----l
2ZJ I I
I ! 210
' 180
180
150
--·-----,
I ---, -1
~-Wtletc streets•~ provided wi:l\ median di\'iG:rs which o:a5 be cro~>e4 l>y tire t\gllter~ pullir.g nose l1n~ ... orw:i.-.r~ ar..enaJ .,.,,.,o; are pmvi<k.d ,,. ,tn rour or more
:rnrtic :1111e• ""d hav~ 2 trnlficcc.ura of more tluln JO.(!(..'() vehicles perc:l~y. hydrsnt ~piu:ins •h~!I kverag~ 500 fu t on r.i1ch •i.!e.vi th:> l!Ie~. an·~ b .. J!':'an~c::f en ar. ,.,_
•em;;tini: ba•i• up t<:> a tire-flow req\lirerncrit of 7,0.X'. g•llor.~ )er minute 111".<1 4-00 feet for hii;hcr firc-flo.., requirement.<.
c. \''heront:w wa.~,.tT\ahu; ~~ cxcer.dod Qlon.g Gti~t~ 'foo.'l:crc .hy..it~\t~ o\r'C tli:lt n~JOO k>r9t"O[C(.."1:i¢n o( 3ttU¢tUl"C3 or sirnitur fit.e probtQtn~. fLrc h~IJ .. ~ni·: -~h ... 11 b,. prv·
'ided It .;pacing r.ot txJ C'4~~cd l ,000 feet \0 Pf'Yl'ide for t.r'.u\SPQrtaticm huan:ls.
11 .• ,educ~ by SC• fee: for dead-end >1.n:"ts or roio.ds.
c. One hydrnnt ior c.ich i .000 i;allons l)(r m;nu~ or frattio:'. there~f.
2000 INTERNATIONAL FIRE CODEQe 359
ATTACHMENT #2
Project Site Layout
Ir UGE-UGE-u GENERA!.. NOJES; r ------_ 1. CONTRACTOR IS RESPONSIBLE FOR ~FYING LOCATION AND DEPTH OF
w ALL UTILITIES PRIOR TO CONSlRUCTION.
90" D 1 BEND ct REQUIRED 2. CONTRACTOR MUST COORDINAlE WITH CITY OF CCl.1.EGE STATION '. ENGINEERING DEPARlMENT PRIOR TO CONSTRUCTION. THRU~T BLOCKING 3. ALL WATER LINE CONSlRUCTION & THRUST BLOCKING SHALL BE IN
I ACCORDANCE Wint TiiE B/CS UNIFlED DESIGN GUIDELINES FOR CONSlRUCTION.
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FISH DADDY'S
RESTAURANT
) ) j ~, Q-6 I FIRE Sll'f&li.'il!l!I UNE
) / 217 LF. OF e•• AW#A C909 PVC CLASS 200 PIPE
I 75 LF. OF e•• D.l.P. (FROM CURB TO RISER)
ff_~ INSTALL s•f SADDLE TAP ct VAJ..Vf. (ISOLATION)
-1 -90" D.I. BEND w/THRUST BLOCKING
J08 LF. OF STRUCTURAL ALL, 4' MINIMUM COVf.R
~''''''' _.,,, ~~ OF r~ 11
-~t-*·" .... 5.J-~ I -<:::>'·" <"'I~ I :,.._.... .. .... -tr', :.*..-: .................. :--.*-~
' JOE I. GATIIS , '· ....................... ··:· .. ., ~ --o "· 90964 ... ,
/-1l...".( ~--{l;-1·0~ " .. ~CENS~.-" !<;: I (C-8 ........ .
11 81 AL € ,, '
~-TiiRUST BLOCKING REUIRED PER CITY SPECS -
3: --i:r--~ g'f -..~iER lA~N co~--~~STING s·1 WATER LINE --£j.1S"tt uN~o~) 8~ ---
---
/ (DEPTii UNKNOWN) l (o£P! ---B~ ---~ a -----e• TAPPING SLEEVE ct VALVf. B~ ~ 8 --=
BW --BW --BW ____.-:: 20' P.U.E.
PROPERTY LINE R.O.W. LINE (3663 / 313)
LEGEND
A 6"0 SADDLE TAP 8 ISOLATION VALVE
P.U.E PUBLJC lJflUTY EASEMENT
H EXIST! G VALVE
Ill EXISTING WATER METER
UGE-UNDERGROUND ELECTRICAL LJNE
FIRE SUPPRESION LINE l.AYOUf
SCALE: 1 • = 30'
FISH DADDY'S RESTAURANT
LOT SA, BLOCK 1
THE GATEWAY, PHASE 1
GATTISENGINEERING
SHEET 1OF1 ENGINEERS -<!> CONSULTANTS
GE001014-02-0l PO Box 1346t •CoU~eSlatio1~ Texas ii84t •(979)575-5022
ATTACHMENT #3
Fire Flow Test Data Sheet
College Station Utilities
Reliable} Affordable, Commun it Owned
WATER SERVICES DEPARTMENT
P.O. BOX 9960
COLLEGE STATION TEXAS 77842
BUTCH WILLIS, FIELD SERVICES DIVISION
PHONE 979-764-3435 FAX: 979-764-3452
FLOW TEST REPORT
Date 22-May-07
Nozzle size 2.5
Location 1611 University Dr
Flow Hydrant Number G-036
Pitot Reading 75
GPM 1455
Static Hydrant Number G-041
Static PSI 90
Residual PSI 82
COMMENTS