HomeMy WebLinkAbout39 Elms Orthodontics 05-63 1501 Emerald PkwyCITY OF COLLEGE STATION
Planning <fr Dewlopmmt ~rvice1
SITE LEGAL DESCRIPTION:
Emerald Park Plaza
Block 1, Lot 1
0.947 Acres
DEVELOPMENT PERMIT
PERMIT NO. 05-63
FOR AREAS INSIDE THE SPECIAL FLOOD HAZARD AREA
RE: CHAPTER 13 OF THE COLLEGE STATION CITY CODE
SITE ADDRESS:
1501 Emerald Parkway
DRAINAGE BASIN:
DATE OF ISSUE: January 26, 2006
Bee Creek Trib. "A"
VALID FOR 12 MONTHS
OWNER:
Troy Elms
2714 Olser Blvd.
Bryan, Texas 77802
TYPE OF DEVELOPMENT:
SPECIAL CONDITIONS:
CONTRACTOR:
Full Development Permit
All construction must be in compliance with the approved construction plans
All trees required to be protected as part of the landscape plan must be completely barricaded in accordance with Section
7.5.E ., Landscape/Streetscape Plan Requirements of the City's Unified Development Ordinance, prior to any operations of
this permit. The cleaning of equipment or materials within the drip line of any tree or group of trees that are protected and
required to remain is strictly prohibited. The disposal of any waste material such as , but not limited to, paint , oil, solvents,
asphalt, concrete , mortar, or other harmful liquids or materials within the drip line of any tree required to remain is also
prohibited .
Full Development Permit
The Contractor shall take all necessary precautions to prevent silt and debris from leaving the immediate construction site
in accordance with the approved erosion control plan as well as the City of College Station Drainage Policy and Design
Criteria . If it is determined the prescribed erosion control measures are ineffective to retain all sediment onsite , it is the
contractors responsibility to implement measures that will meet City, State and Federal requirements . The Owner and/or
Contractor shall assure that all disturbed areas are sodden and establishment of vegetation occurs prior to removal of any
silt fencing or hay bales used for temporary erosion control. The Owner and/or Contractor shall also insure that any
disturbed vegetation be returned to its original condition, placement and state . The Owner and/or Contractor shall be
responsible for any damage to adjacent properties , city streets or infrastructure due to heavy machinery and/or equipment
as well as erosion , siltation or sedimentation resulting from the permitted work .
In accordance with Chapter 13 of the Code of Ordinances of the City of College Station, measures shall be taken to insure
that debris from construction, erosion, and sedimentation shall not be deposited in city streets, or existing drainage
facilities .
I hereby grant this permit for development of an area inside the special flood hazard area. All development shall be in
accordance with the plans and specifications submitted to and approved by the City Engineer in the development permit
application for the above named project and all of the codes and ordinances of the City of College Station that apply.
Date
Owner/ AgenUContractor Date
FOR OFFICE USE ONLY
P&Z CASE NO.: 05 -~ 3
CITY OF COLLEGE STATION
Planning & DevekJpmm t Serv ices
DATE SUBMITTED:_/ f j (Yj(J':>=
L{ ~· r:;.; 0.V
x
x
SITE PLAN APPLICATION
MINIMUM SUBMITTAL REQUIREMENTS
Site plan application completed in full.
$200 .00 Application Fee .
$200 .00 Development Permit Application Fee. x
x $600 .00 Public Infrastructure Inspection Fee if applicable . (This fee is payable if construction of a public
waterline , sewerline , sidewalk, street or drainage facilities is invol ved .)
_X_ Eleven (11) folded copies of site plan
_X_One (1) folded copy of the landscape plan .
NIA One (1) copy of building elevation for all buildings.
N/A A list of building materials for all facades and screening for non-residential buildings .
N/A Color samples for all non-residential buildings .
NIA Traffic Impact Analysis (if applicable for non-residential buildings).
_X_A copy of the attached site plan checklist with all items checked off or a brief explanatiqn as to why they
are not checked off.
N/A Parkland Dedication requirement approved by the Parks & Recreation Board , please provide proof of
approval (if applicable).
Date of Preapplication Conference: ______ M_o_nd_a_v~· _N_o_ve_m_be_r_1 ..... _2_00 ...... s ___________ _
NAMEOFPROJECT_---=E=L~M=S~O~R-'-T"""H~O~D~O=-N-'-T~l~C~S _____________________ _
ADDRESS __ 1~5-'-0 ...... 1=E_M ...... E_R_A_LD_P_A_R_K_W_A_Y ______________________ _
LE GAL D ESC RI PTI 0 N --=EM'"'-'=E"""RA'--'-=LD"--'-P'-'A"""R'-"K-'-P-=L'-'AZ=A-"-"B"""L=O"""'C-'-K'"-1'-'--=L-=-O-'-T-'-1""'"'A'"'""C=-R""'"E=-S~O .'""'9-'-4 7-------------
APPLICANT/PROJECT MANAGER'S INFORMATION (Primary Contact for the Project):
Name STEVE DUNCAN PLEDGER KALKOMEY INC
Street Address 7020 COYOTE RUN City BRYAN
State TX Zip Code 77808 E-Mail Address SED@PKENGINEERING.COM
Phone Number 979-731-8000 Fax Number 979-731-1500
PROPERTY OWNER 'S INFORMATION :
Name TROY ELMS
Street Address _ __,2"""7_,1--'4--"0=S=L=E:.:..R.:....;B=L=-V=--=D~.----------City BRYAN
State TX Zip Code _.._7 ...... 7-'-8~02~-----E-Mail Address __ =-br=a=ce-=s=a'""'g"""'@""'c=o"""x."""n-=-et,___
Phone Number (979)776-7900 Fax Number _____________ _
ARCHITECT OR ENGINEER 'S INFORMATION:
Name -SAME AS APPLICANT -
Street Address------------------City __________ _
State _____ Zip Code ______ _ E-Mail Address ____________ _
Phone Number ___________ ~ Fax Nu mber _____________ _
6/13/03 l of 6
Pledger Kalkomey, Inc.
Consulting Engineers
January 17, 2006
Ms. Jennifer Prochazka
City of College Station
P.O. Box 9960
College Station, Texas 77842
Re: Site Plan
Elms Orthodontics
PK Job No. 37105-291
Dear Mrs. Prochazka,
Enclosed please find the following:
1. Two (2) revised site plans
2. One (1) landscaping plan (not revised)
3. One llx17 Grading /Erosion Control Plan
7020 Coyote Run
Bryan , Texas 77808
979-731 -8000 , 979-731-1500 (Fax)
www.pkengineering.com
The additional copies will be submitted upon approval of the
above. The following items are addressed:
PLANNING/ENINEERING (Jennifer Prochazka / Josh Norton) :
1. The pavement section was revised.
2. The Drainage Report was not revised. It is certified
that the peak from the development will be ahead of the
peak for the primary channel and therefore no detention
will be required. Email correspondence with Alan Gibbs
and Jay Page is attached.
3. OK.
ADDITIONAL CHANGES:
a. None
sed@pkengineering.com
SED/jer
Enclosures
P.
cc: Dr. Troy Elms
Mark Mikeska
_,,,,,,,,
---:.\~ OF Tc..t ''t : ?~· •••••••• "f,r '• ,;' .·· * ·.. ,, ~·: ···~ ,,... ···'I. r··························1. I. ~ E. DUNCAN ~ I.· ••..••••.•.••.•.••..••.•. ..,,
~ ••• 83252 ... ~ '~. _.-0 ."/?;"' Ila O~ •• ~~CE:N'5~;-. • ~~ ,5
't es ······,w.~ -l\\ ;s~NAL 't..'-_--
'''''''"-
Brenham • Bryan • Ro senberg
S:\2 005\3 7105-291 PA YNE-E lms\CS -05-site 2 respo nse.doc
Steve Duncan
From:
Sent:
To:
Alan Gibbs [Agibbs@cstx .gov]
Th urs day , December 22 , 2005 5:27 PM
Josh Norton ; Steve Duncan
Cc: Troy Elms ; Mark Mikeska
Subject: Re : FW : Elms Ortho Site Plan Comments #2
Steve ,
That is a good point I didn't realize. In short though , detention is
required -unless it can be shown there is no negative impacts or the
receiver of the increased flows gives consent. The receiver in this
case appears to TxDOT and may require a TxDOT permit as well. Once the
drainage reaches the primary, your certification that the subject runoff
peak is "ahead" of the primary's peak will justify no detention on that
reach.
Alan P. Gibbs , P.E.
Sr. Asst. City Engineer -Development
Public Works Department
City of College Station
P. 0. Box 9960
College Station , Texas 77842
Ph: (979) 764-3570
Fx: (979) 764-3496
agibbs@cstx.gov
www .cstx.gov
>>> "Steve Duncan" <sed@pkengineering .com> 12/22/2005 3:43 PM >>>
josh/alan (cc-troy elms , mark mikeska)
josh and i spoke briefly about this tuesday , but i am still confused on
what
is needed for the drainage report.
i have attached the results page from the report and the site plan
drawing.
in my opinion , it does not do any good to run all the calculations to
determine the capability of the storm sewer to handle the flow when it
is
submerged during the storm events. the city storm inlet manhole where
the
majority of our runoff enters is at approx. elevation 252'. the flood
plain
elevation is approx. 255'. therefore the road is 3' under water and
sheet
flows.
1
~><><><><><><><><><><><><><><><><><><
Steve E. Duncan , P.E., V.P.
Pledger Kalkomey , Inc . -Consulting Engineers
7020 Coyote Run, Bryan , Texas 77808
979-731-8000 (voice), 979-731-1500 (fax)
sed@pkengineering.com
<><><><><><><><><><><><><><><><><><><
-----Original Message-----
From : Jennifer Prochazka [mailto:JProchazka@cstx .gov]
Sent: Tuesday , December 20, 2005 9:58 AM
To: bracesag@cox.net; Steve Duncan
Subject: Elms Ortho Site Plan Comments #2
Please see attached comments .
Thanks!
Jennifer Prochazka, AICP
Senior Planner
Dept. of Planning & Development Services
City of College Station
tel.: 979.764 .3570
fax: 979.764.3496
www.cstx.gov
College Station . Heart of the Research Valley .
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Steve Duncan
From:
Sent:
To:
Ja y Page [JPAGE@dot.state .tx .us]
Thursday, January 12 , 2006 4:53 PM
sed@pkengineering .com
Subject: RE : elms drainage
If the City doesn't require it, we don't in this situation.
Jay
>>>"Steve Duncan" <sed@pkengineering.com> 1/12/2006 4 :50 PM>>>
so we may proceed as shown with no need for detention?
<><><><><><><><><><><><><><><><><><><
Steve E. Duncan, P.E., V.P .
Pledger Kalkomey, Inc . -Consulting Engineers
7020 Coyote Run, Bryan, Texas 77808
979-731-8000 (voice), 979-731-1500 (fax)
sed@pkengineering.com
<><><><><><><><><><><><><><><><><><><
-----Original Message-----
From: Jay Page [mailto :JPAGE@dot.state.tx.us]
Sent: T hursday, January 12, 2006 4:39 PM
To: sed@pkengineering.com
Cc: Karl Nelson
Subject: RE: elms drainage
Sorry it took so long to get back to you. I have reviewed
the site plan & data and there appears to be no problem.
Each existing inlet should have at least 1 sq. ft.(approx) of
net opening to handle the site runoff.
Jay
>>>"Steve Duncan" <sed@pkengineering.com> 1/11/2006 11 :36 AM>>>
jay, any luck? we have a Friday deadline .
<><><><><><><><><><><><><><><><><><><
Steve E. Duncan, P.E., V.P.
Pledger Kalkomey, Inc. -Consulting Engineers
7020 Coyote Run, Bryan , Texas 77808
979-731-8000 (voice), 979-731-1500 (fax)
sed@pkengineering.com
1
<><><~<><><><><><><><><><><><><><><><
-----Original Message-----
From: Steve Duncan [mailto :sed@pkengineering .com]
Sent: Wednesday, December 28 , 2005 10:55 AM
To: Jay Page
Cc : Troy Elms ; Mark Mikeska
Subject: elms drainage
jay,
per our discussion this morning , attached are pdf files of the
following:
-drainage report results
-site plan and grading plan drawings with markups in red
please comment on any txdot requirements .
<><><><><><><><><><><><><><><><><><><
Steve E. Duncan, P.E ., V .P.
Pledger Kalkomey, Inc . -Consulting Engineers
7020 Coyote Run, Bryan , Texas 77808
979-731-8000 (voice), 979-731-1500 (fax)
sed@pkengineering .com
<><><><><><><><><><><><><><><><><><><
No virus found in this outgoing message.
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•
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( ,
CALCULATED FLOW
ELMS ORTHODONTIST
CITY OF COLLEGE ST A TI ON
PK JOB #37105-291
FIRE FLOW CALCULATION
Fire Flow at hydra nt 1-002 (Emerald Forest in front of AMS):
With 20-psi pressure at Static Hydrant 1-058:
Qr = 29.83c dD 2 jP;
Qr = (29 .83)(0.9)(2.5) 2 ..J8o = 1,501 gpm
Qf ~Q{;, =:~ )'"
Q = (1 501)( 11 O -20 Jo .s4
= 5 546 m
J ' 110 -102 ' gp
Where:
Qr = residual flow at the pitot pressure (gpm)
Q1 = 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)
Pr = residual pressure (psig)
~ = static pressure (psig)
REQUIRED FLOW
Building Type= V-b (Section 602 and 1505 of 2000 Int ernational Building Code)
Fire Area= 3,710 square feet (Section Bl04 of 2000 International Fire Code)
Required Fire Flow= l , 750 gpm (Table Bl 05. l of 2000 International Fire Code)
Number of hydrants required= l (Table Cl 05 .1 of 2000 International Fire Code)
RESULTS
5,546 gpm available
l hydrant available
S:\2005\37105-291 PA YNE·Elms lfire flow calcs .doc Pledger Kalkomey , Inc . -Consulting Engineers
7020 Coyote Run, Bryan, TX 77808
ph one: (979) 731 -8000 fax : (979) 731-1500
-Hydrant Flows
Flow Hydrant 1-002
Date 12/8/1998
Pilot Reading 80
GPM 1 140
Static Hydrant 1-058
Static Pressure 110
Residual Pressure 102
Locfltion EMERALD FOREST IN FRONT OF AMS
·" -
( j
· Hydrant Flows
Flow Hydrant 1-058
Date 12/8/1998
Pitot Reading 60
GPM 1040
Static Hydmnt 1-002
Static Pressure 108
Residual Pressure 100
Location GEMSTONE, IN BACK
j . -. .... . .
CHAPTER 6
TYPES OF CONSTRUCTION
SECTION 60 1
GENERAL
601.1 Scope. Th~ provis io ns of this c h :i~:~r s::Jl i cc ;;::c! t:i e
.:i .J s sirica~1 on o r" rn.:i icings a:; to tyce o r C ,'~.S(~.::::::: ..
SE CTIO N 6 02
.:ON STRUCTION CLASSIFICAT lm;
60 2 .l General. 8Jild ings and structure -> e r ect~J or to t ~
e r ~:t~d. altered o r extended in height or a:e:i s!":::!l i t e cl.l ss:.
fied in one of the fi ve constru c tion types defi ned in Se cti or.s
602 .2 through 60 2 .5. The b ui ld ing e lements shlll have a fire
resi st ance ra ting no t le ss th :i.n that spe cified in Tab le 60 I and
e xteri or wa ll s sh all ha ve a fire -resist.an ce ra ting not less th an ;~
th::it spec ified in Tab le 602 .
602.1.1 l\l inimum r equirements. A building or portion
there of s h::ill no t be req uired to conform to the det:i !b of a
typ e o f cons tru c ti o n h ig her th an th:i.t t;. pe. w hi:h meets the
minim um requi re ments b:i.sed o n occupan.:;. even tho ugh
cert:i.in fe ature s of s uch a bu ild ing ac t.i::illy conform to a
higher type of constru c tio n .
602.2 T)pes I and II. Ty pe s I and II construct io n are th os e
t;pes of construc ti o n in wh ic h th e bu ild ing el eme nts lis.te d in
Tabk 60 1 are o f non comb us tibl e matc:ri::ils .
60 23 Typ e III. Typ e III co ns tru c tion is that type of con -
struc tion in which th e e .v.:te ri o r wal ls are of n ~1r:c o m bus t ib:e
matcr i::i ls and the int e ri or bui lding e le ments are of any mate-
ri::il permi tted by thi s cod e . Fire-retardan t-tre ate d wo od fra m-
ing co mplying with Sec ti on 2303 .2 shall be:. permitted wit hin
ext eri o r wa ll ass embl ies o f a 2-h o ur r atin g or ks s .
602.4 Type I\'. Type: IV con st ructi o n (H eav y Timbc:r, HT) is
that type of con s tructi on in which the ex te ri or wall s ar e of
noncombu stible mater ia ls and th e interior bui lding elements
are of sol id o r laminated wood without concealed spaces . The
det ails of Type IV con struction shall comply with the prov i-
sions of th is section. Fire-retardant -treated wood framing
complying with Section 2303.2 shall be permitted within
exterior wall as semblies with a 2-hour ratin g or less .
602.4.1 Columns. Wood columns shall be sawn or glued
laminated and shall not be ks s than 8 in ches (203 mm),
nominal , in any dimension where supportin g flo or loads
and not less than 6 inches ( 152 mm) nominal in width and
not less than 8 inches (203 mm) nominal in depth where
supporting roof and ceiling loads only. Columns shall be
continuous or superimposed and connected in ~n
approved manner.
6-02.4.2 Floor framin g . Woo d beams and girders shall be of
sawn or gl ued la minated timbe r and sh all be no t less ti-tan 6
inch es ( l 52 mm) nomina l i:i width and not Jess th an 1 o
i::ches (254 mm) nomin :il i:i depth . Fram ed S:l\\11 or i;!uec
b.:n.inated timber a:::he :;. wh!c:-. s;::r' ... 1g from t'ie floo; Ii:-.~
2..-:d support floor load:;. sh:i ll be not les s than 8 inches (203
rim J nominal in any d imension . Framed timber tru sses suo-
r orting floo r loads shall h::ive mer.ibers of not less th J.n. 8
ir:.:he s (20 3 mm) nomin al in any di mension.
60 2.43 Roof framing. Woo d-fr am ed or glued lamin ated -
ar ches fo r roof constru cti on, wh ich sprin g from the fl oor
lin e or fr om grade and do not supp ort fl oor loads sh all
ha ve members not less tha n 6 inches (i52 mm) nominal in
width and have less than 8 in ches (203 mm) nominal in
de pth for the lower half of th e heig ht and not le ss than 6
inches (152 mm ) nomin al in depth for the upper half.
R_J med or glued laminate d ar ches fo r roof con stru c tion
L1Jt spring from the top of wall s or wall abutments,
fr am ed timber trusses , and ot her roof framin2, which do
not support floor load s, sh:i.ll have members ;ot less than
4 inche s (102 mm) nomin al in width and not less than 6
inches (152 mm) nominal in depth . Sp aced member s may
be composed of two or more pieces not less than 3 in ches
(76 mm) nomin al in ·thi ckn es s where bl oc ked sol idl y
thr oughout their in te rven ing s paces or where spa ces are
tightly cl os ed by a co ntinu ous wood cover plate of not les s
than 2 inche s (51 m m) nomin al in thi ckness secured to the
unde rsid e of th e member s. Splic e pl ates shall be not Je ss
th an 3 inche s (76 mm ) nominal in thic knes s. Where pro -
tec ted by appr ov ed aut om ati c s pri nkler s under th e roof
de ck. fr aming member s sh all be not les s tha n 3 in che s (76
mm) nominal in width.
602.4.4 Floors . Fl oors sha ll be with out concealed spa ces.
Wood fl oors shall be of sa wn or glued laminated planks ,
sp lin ed, or tongue-and -gr oove, of not les s tha n 3 in che s (76
mm) nominal in th ickness cov er ed with 1-inch (25 .4 mm)
nominal dimension ton g ue-and-groove flooring , laid
cro sswise or diagonall y. or 0 .5-inch (12.7 mm) particle
board or planks not less than 4 inches ( 102 mm) nominal
in width set on edge close together and well spiked and
covered with 1 inch (25.4 mm), nominal, dimc:nsion floor -
ing or •h-inch (12 .7 mm) wood structural panel or 0 .5-inch
(12.7 mm) particle board . The lumber shall be laid so that
no continuous line of joints will occur except at points of
support. Floors shall not extend closer than 0.5 inch (12 .7
nun) to walls. Such 0.5-inch (12 .7 mm) space shall bl! cov-
ered by a molding fastened to the wall and so arranged that
it will not _obstruct the swelling or shrinkage move
602 .4 .5 - 603.1
ments of the floor. Corbel ing o f masonry walls und er the
floor may be used in place of mol d ing .
6-02 A .5 Roo fs. Roofs sh all be without concealed spaces and
woc<l roof decks shall be sawn o r glued lami nated. splined or
tongue-:i:id-gr oov e p!J.nk. not less L1an 2 inches (51 ·mm)
L1i ck. I 1,-, (J2 rr.r.,l -inch-thi ck wood structur:il panel (e xteri -
or glue l. or oi pl:1n.ks no t less th<!n 3 inches (76 nun) nomir.al
'" i.:e. se t 0n edg e cl os e together and laid a5 require d fo ~
:· :. .. :>. Or~1 :!~ t:·"!Ces oi decking may t:e usd i :· rn:i-:id ir.;
eJ :..:i ·:~ent fire res 1snnce and snucnrral pro !=e n!::-s.
60 2.-t.6 Pa rti ti ons. Parti tions shall be of solid wood co n-
su-Jct ion fonr.e c by not les s th.111 rv.·o byers of 1-i ::ch (25
1.1 :n \ mat~hed bo ar ds or lamin :ned construction 4 inche s ( 100
nun) thick . or of I -ho ur fir e-resisr.an ce -r:n ed co nsL'llction .
60 2A .7 E xteri or s t ru ctural m e mbers. \Vhere a horizon-
t:il separation of 20 feet (6096 mm) or more is prov ided,
wood col umn s and ar che s c o nforming to heav y tim be r
siz es ma: be used e xte rna lly .
60 2.S Typ e \'. T:l'e \' construc tion is th :it type of cons truc -
t:0n in which the structural e lements. e xte rior walls anJ inte-
rior walls are o f any m:i ter i:i ls permitted by this code.
SECTION 603
COMBUSTIBLE MATERIAL IN TYPES I
AND II CONSTRUCTION
603.1 All owable uses . Combu sti ble materials are pe nn iued--.
in buildi ng s of Type I and Typ e II co ns tru c tion in the follow -
i:'.g aprlications:
I . Fire -r t!tJrciJnt-trc!Jted wood sh :i ll be pe rmitted in:
1.1. !\onb e aring partitions where the requ ir t!d fire -
rt!sistanc e r:it ing is 2 ho ur s or les s .
1.2. !\onb e ari ng e ."<t erio r wall s wh e re no fir e ratin g
is require d.
1.3 . Roof constru c tion a s penni tte d in Ta bl e 601,
r\ot e c . It e m 3 .
1 Thermal and acou sti ca l in sul a tion , o the r th an fo am
p!Js tics , hav ing a fla me s p read index of not more th an
25 .
Exceptions:
l . Insul ation placed between two la yers of noncom-
bustibk materials without an int e rvening air
sp ace shall be all owed to ha ve a flame spread
index of not more than 100 .
2. Insulation installed between a finished floor and
solid decking without intervening air space shall
be allowed to have a flame spread index of not
more th:m 200.
3. Foam plastics in ·accordancc with Chapter 26. ··
TYPES O F CO N STRUCT IO N
4 . Roof coverings that have an A. B or C classification .
5 . In terior fl oo r fini sh and interi or finish. trirr. and mi!l-
work such as doors . door frarr.t!s . wir.dow sa she s and
frames .
6. Where not ins talled O\·er 15 fo~t r-i5 72 r.:nl abov e
F ade. sh ow w ind ows . nail ing er fu:-rir.g stri ps. wood -
e n bulkheJds bel o w s ho \;,· wi:-.J ows. t!iei: fra~.e s.
a:Jro r.s and show ca.;e s.
F i nis~ fl ooring a;:>?ltd c 1 ~;:-c:::: n fr.e r\i o ~ s!ai:: c t.)
wo od sl ee !:'ers t hat ue fires top .:ed in a c c o ~d:ince w i:~,
Sec tion 716.2 .7 .
E.. Partiti on; div iding portions of st ore s . ofrice s or si.r.j Llr
· -pbces occupie d by one te nant only and which do no t
e stablish a co rrid o r se rvin g an oc cupan t load of 30 or
.· more may be construc te d o f fir e-ret:ird.'.ln t-treated
wood, I -h our fire-re s is ti ve co ns tru ction"'. or of wood ~ ~
p.'.l nel s o.r s imilar light constru ctio n up to 6 fw ( 1829
mm ) in he ig ht.
9. · .. P btfonns as permi tte d in Sect ion 4 10 .
10 . :-.lat'di:its c o mpl y in g with Sect ion 60 2 o f the
Intern ationa l M e ch a nical Code.
I l.
12 .
13.
Com bus tible exterior wall co verings, ba lc on ies, bay or
oriel windows , or similar appen da ges in accordance
with Ch apter 14.
B locki n2 such as for handrails . mi ll wor k , cab inet s. an d
. ---win dow and door frame s.
Li ght-tr:ins mitting plas ti cs as pe rmit :ed by Ch:i pter 26 .
14 . !\!as tics and caulkin g m.'.lt e ri als applied to pro•;ide tlt!x-
ibl e sea ls between c o mp o nents o f nterio r wall con-
stru ctio n.
15 . Ext t!ri or pbsti c ve ne er ins t:illc!d in acco rdJnct! with
Se c tion 260 5 .2 .
16 . !\ai ling or furrin g strip s a s pe nnittc!d by Swion 803.3.
17. He ~vy ti mbe r as permitted by ~ote C. lt t!m 2 . to Table
601 a nd Se ctions 602 .4 .7 an d 14 06.3 .
18. Aggregat es , component m atc!ri .'.l ls and admi."<tu res as
permi tt ed by Section 703 .2 .2 .
19 . Spraye d cementitious and mi neral fi ber fire-res ist ive
ma teri:ils installed to comply with Sect ion 170~. l l.
20. ?-. fatt!rials used to protect penetrati ons in fire -resistarn.'t!-rat ed
assem blies in accortlance Y.ith Secti on 711 .
21. Materials used to protect joints in firt!-resis ta nce-rat ed
assemblies in accordance with Section 712.
22 . Materials allowed in thl! concealed spaces of building s
of Ty~s I and n construction in accordmce with
Section 716.S.
.:;. ..
TYPES OF CONSTRUCTIO N TABLE 601 -TAB LE 602
I
I
TABLE 601
FIRE-RESISTA N CE RATING REQUIREMENTS FOR BUILDING ELEMENTS (hours)
B UIL DIN G ELE M ENT
S :r uctt.:r;i ! fra me:·'
r ~l·j i_;._!1n g (0 !l!nll1:-i. g i r j ~f~. t ru''~'
B~r:r.,? \\J lt ,
E ,:::;; ·r
!.::::: .. -
!\or.cc::i:i ;.; \\J.~h :i.;.J p:i.:-i:.::.-~,
£\::~i .:-r
l ~.:::i .i r·
Flo,1r c0ns{ruc·t1,1i;
In,lud ing supportin g bc:J m'
a nJ j ni sts
Rov f c o ns tru c ti o n
Incl ud ing support ing bc::ims
a nj j 0 is b
TYPE I
A
I I
I
I ~
I I
I 1/;C
8
.L
~ I
' I
I
I ~ 1 ~
TY PE: II
I
I
e
S.:~ T:.1bl ~ 61J 2
s~~ S;:::{i On 602
0 I
o-· l c
TY?E Ill
8
0
0
TY PE IV TY PE V
HT 8
HT ' I ()
. :--. l
I
HT I I 0
--.
HT JC 0
F.i r S l l foo t = 3U-U l mm
The strue·tu rJI fr J mc: s h~ll l'.: ''":,iJ ,·rcJ tu t:«: the ,,•lu:nn , n J the g :rJ er ,. b~1-. t rJ »~> anJ sr .in dreb h.i ,in:; dire,·t i:onn ei:ti .in , t0 th e culum ns and
lc u ..:in.; mc:mbc:r, dc:>i:;nc:d tu ''1 :0:· g r J ' i t ~ 1,,JJ ,. The: me n:cc r-o f liuvr ur ru0 f FJnc b "hii:h h.i'e nu connci:tio n w tr.c: co lu mn ; sh.il l be co nsidered
si:cu nd ..i ~ memb.:1' ar.J n0t a p..1 11 uf the stru..iurJI frJ mc:.
b . R.:v f s:.irr u11 s : Fi r~·r c:,i ,u n ..:c: rati n:;, of s:rwturJ ! fr Jm e ar.J bi:J ri n~ "alls arc rc:m itt eJ to be: redu ced by I hour where suppo 11 ing a roo f onl).
c . I . E \.:~p t in F a.:t ,1 ~ -l nd u,:ri.i l t F-l 1. HJLJrd uu, (H •. "l~r ,ant i lc: (\I i anJ \lc-.J c:rar c: HJZJ.I d S to rag e: (S · I J ixc upJ nc'ic:s. fir~ prot ~l°t io n of ~tru c tur -
al memb.:r .; sh.J I! n0t Ix re4u ire d . in,lud ing pr otc:c tior. of roo f frJ min g anJ Jed:.ing "here: every pJ.It of th e roo f constructi on is :!O fr et or mo re
a b,w.: an y n 0o r i mm.:d i J t cl~ bc:l0 \\. F ire -r ~tJrJ.int -t.reJ teJ "oo d mem ber; sh.ill be allowed to be used fo r suc h unpr ote cted membe r;.
' In all c ..:.:up a n,·ie " h <J '~ ti mb <r sh J ll be a ll v"ed "here a I -ho ur or ks ' fir~·re,istan.:c: rat ing is requ ire d.
3. In TH •.: I anJ T~rc: II co n,1ru ..:ti.10 . fir ~·r eur.!.i nt·lr~J tc:J "ooJ sha ll b.: a llo "~d in build ings not over t"o stories induJ ing girJ<rs and tru ;se s
a-; pa11 of th.: rN f c un,truc ti 0 n. .. __
..; A .~ appr0 ,.:J aut<>mJ tie· sprinkle r '~'t.:m ir. a,·,0rJ .in l'c "ilh Sc:.:1 i,1 n 9tl3 .3.I I shJ ll be all u"ed ti' b.: su tistitu t.:J fu r 1-l:uu r fi r~-r.:,i ,t an.:.:-ra 1.:d con·
s:ru..:ti 0n . prn,iJ.:J su.:h sy,tc:m i> nu t oth <r -'i'c r .:q ui r ~d ti ~ ot her pr o,isiu n> of the: cc-Jc: or used fo r an all u\\Jt'>k a r~J in '1C:J >e in ac-cordJ n(e wit h
S..::t io n 51)6 .3 Na n al !.i "at->le heigh t in..:r.:J,i: i ~ a ,·rn r ,IJ 11 ..:~ \\ith Si:;;ti ,1n 50-!.2 Th ~ 1-ht'ur su h titu ti 0n f.,r the fire: r ~-:,:J n l°c: ofn t.:ri.1r \l,J ll -; sh J ll
n11( le .: r c:rm itt c:J .
F.•r in 1·:ri1ir n 1 1 n h.:;>ri 11 ~ p.i 11i 1tcm, in T ~ r e· I\' '"'n,tru..:ti,1n . aJ,0 s~e S ~cti u n 60 2 J .~
\,'t k" th.i n the· fi r c:-r ..;,j ,t.11~..:.: rJt in :; b.i ,c:J 0n fi r.: sc:p.1r J1i,1n di,tJr..:~ i-.:e T.1 !c k ~i 1 2 •
TABLE 602
FIRE-RESISTANCE RATING REQUIREMENTS FOR EXTERIOR WA LLS BASED ON FIRE SEPARATION DISTA NCP
FIRE
SEPARATION
DISTANCE TYPE OF GROUP GROUP F-1 , GROUP A.8 ,E,
(feet) CONSTRUCTION H M , S-1 F-2 . I, Ab, S-2. U
< 5..: All 3 I 2 I
~ 5 I-A 3 2 l
< 10 Oth.:rs 2 l l
:::: LO !-A . l ·B 2 I l
< 30 11 -B. V-B I 0 0
Othi::rs l l l
~ 30 All 0 0 0
For SI : I foot = 304.8 mm .
3. Load -b.::iring e.\terior walls sh:ill 3f so comply "ith th.: fire-resisun.:e rating requ irement; of Table: 60 I .
b. Group R-3 3nd Group U when used as a.:.:essory 10 Group R-3, ;i s appli.:able in Sc:.:tion 101.2 sh:ill not be rc:quireJ to h:i vc a fire -rcsistan l°e rJt ing whue
fire sep;irJtion dis ranee Is 3 feel or more .
c. Sec Section 503.2 for party walls .
'
1503 -1505 .1
SECTION 1503
WEATHER PROTECTION
1503.1 General. Roof dc:cks shall be: covered wit h appro·:e d
r0•)t .. co·:::r ir::;s secure d to the: buil di ng or stru c ture in a.:cor -
.:,;:-.-:e \\ ith t ~.e pro .. · is io ns o f this ch::ip tc:r. Roof co \·ering;
~~ • ..:1: be Ce5:gned. in sta lled and nuinu ined in a·:cor.::J::,:e
\' '·'; t:.is cede a;id the: approved m:rnufa .:turer·s in st:11iJ:i 0r.
::-.;:.-.:.:i:or:,; s:.:cr that t:i e ro o r· co·:erir.:<' s;:J !I serve t.1 r ~.J t :.::
l SuJ .2 Fl as hing. Fl::!shing s'.'JJ!I t ~ i:.,;tJ lb:i in si.;.:f:::: :-:'.!:-.-
r.:~ as t·J r re\·en t r..oist ure e ntering t he: wall through the _i ,1i:;t-
i:: t':e copi:ig. through mo isturc:-pc:rm eab le ma:eriJ!. a: i ::r :~·
se.:r ions \\ ith the roof plan e o r at p..i r:i pe t \\all pe r:etrat!or:s .
1503.2.1 Locations . Fbshin g sh:il l be inst:il led at \\ :ill and
ruof intersection s; a t gutters ; wherever there is a change ir:
roof sl ope or dire.:t ion: and around roof opening ;. Wh ere
fla shing is of met :il. the met al sh:ill be corrosion resi st.:?nt
\\ it h a thicknes s of not less th :l n 0.019 inch (1\o . 26 p l-
\ an izeJ shc:e tl .
15033 Coping. Parapet wall s sh:il l be properl y cope d \\ i:h
no ncombustibk. \\ eatherp ro of mater ials of a wid th r.o k;s
than the: thicknc:ss of the para pet wall .
[PJ 1503..t Roof drainage. Design and inst:illation of roof
drJinagc: systems shall comply with the /111.:rr.a ri or.al
P;:1111 bing C odt:!.
1503 .-U Gutters. Guttc:rs and k:iders pl::iced on the out -
sid e of build ing-;. other th :i n Group R-3 as appli cab le in
Sect io n 101.2. pri vate-garage s . anJ builJ i n~s o f T;.re \'
constru.:tion. sh ::i ll be of no ncombustible material or a
minimum of Schedule-40 pla stic pipe.
1303..5 Roof nntilation. Inta ke anJ exh au.;t ven ts sh:i ll be
pro\·ideJ in accordance: with Section 1202 .2 and thc: manu-
f .;cturer's installation instructions .
SECTION 1504
PERFORMANCE REQUIREMENTS
150-U \Yind resistance of roofs. RoQf decks and roof cov-
erings shall be designc:d for wind loads in accord:ince with
Chapter 16 and Sections 150-U, 150-U and 150-l.4.
Exception: Asphalt shingks sh:ill be connc:ctc:d to thc:
roof deck in accordanct: with Section 1507 .2.
150-l.2 Wind resistance or clay and concrete tile. Clay and
concrete tik .roof coverings shall be: connected to the roof
deck in accordance with Chapter 16 .
... .. ".:·
ROOF ASSEMBLIES AND ROOFTOP STRUCTURES
150-U \Vind resistance of non ballasted roofs. Roo f cove r-
ings installed on roofs in accordance with Secti on 15 07 that
u e mc:chanically attach ed o r adhe re d to the roof deck shJll
be ce s ignc:d to resist th e des ign wi nd load pressures io r
cbddi ng in Ch a ptc:r 16 .
150-13.l Other roof syst em s. R.J •)f syste ;r.· with built-
i.:~. modific:d bi tum c:n . fully aberec or rr.c:cha:-i i ..:a li ~
:i ::J~h ~d s i n~l c·;:>ly rl"::-o t.:~h fJ .-;:~:--:::~ r:;~c 2 ! :2::-:! r 20 : s:. ~ ·
rer::s. and other rypes or' mem:;r:1::e r.)o :· c 0·:e:-;:i='; s~ . .,1:
aiso bc: tested in accord:ince wi th F\l 4...i5 0. F\l .Ll/1}. L'L
5 ~:j or UL I S97.
· 150-l.3.2 i\Ietal panel roof systems. l\kul panel root· s~ s -
te ms through fa stc:nc:d or stand ing seam shall bc: tc:s ted in
" accordan ce-with UL 580 or ASH.IE 1592 .
15,0-l.4 Ballasted low-slope roof systems. B::ill:is~ed low -
sl opc: (roof s!Opc: < 2 : 12) singlc:-ply roof systc:m coverin gs
insc:illed in accordance-with Section 1507 sh all bc: designc:d
in accordJnl.'e with A~SI.'Rl\lA'SPRI RP-4 .
"
130-l..5 Physical properties. Roof co\·erings installc:d on low
slo pe roofs (roof slope < 2 : 12) in accord:in..:e with Section
1507 shall demonstrate physical integrity O\'er the working
life of thc: roof basc:d upon 2 ,000 hours of exposure-to a..:cel-
er:ited weathc:ring tc:sts conductc:d in accorda nce-with ASTM
G23. ASTM ~6 or ASTM G53 . Those roo f covc:rin~s th at
are subjc:ct to cyclical flexural rc:spo nse duc: to wind loads
sh:ill not demon strate any significant loss of tensile str<!ngth
fo r unreinforced mc:mbranc:s or brea king stren gt h fo r rc:i n-
forced mc:mbranes whc:n tested as here-in re-q uire d
150-l.6 Impact resistance. Roof co\·erings ins tJllc:d on 10w -
slo pe roofs (roof slope < 2 : l 2J in accord :inc c: wi th St!ct io n
1507 shall resi st impact damag~ based on the re-suits of tests
conducted in accordance with ASH.I D 3 i ~6. AST;\! D
4272. CGSB 37-GP-52~1 or Fl\l 4~7 0.
SECTION 1505
FIRE CLASSIFICATION
1505.l General. Roof assemblies shall be divided into the
classes defined below. Class A, B and C roof assc:mblies and
roof coverings required to be listed by this section shall be
tested in accord;.10ce with ASTM E 108 or UL 790. In addi-
tion, fire-retardant-treated wood roof coverings shall be tc:st-
ed in accordance with ASTM D 2898. The minimum roof
coverings instalkd on buildings shall comply with T::ible
1505.l based on the type of construction of the building.
tLDING cooe®
ROOF ASSEMBLIES AND ROOFTOP STRUCTURES
l,l. I
B I
TABLE 1sos.1a.b
MINIMUM ROOF COVERING CLASSIFICATION
FO R TYPES OF CONSTRUCTION
18 I IJ ,l. i 118 lllA I 11 18 I l'I I VA I
B I B ! (" 8 I (" I B I B I
~ ·r Si . I f-.·•= _;,,.i.;; r.'.:11. I s qu:ir~ f·~•'t = O .l)•l ~•1 r.1:.
VS
("
J L 1~!::·d m~i!:--" !s ~ r.:·~u i :-.:d in ac i.:l):--..!J ni.::: "it ~ the: L ·,.?,:11 i l i/J h:1: .. !
1 ... :r.·1.~1 ce [, t!1 e r ,,;!..!~ to tr.~ 1 ,~~:i::0 r. cf rhl! t:ui!Cin~ \\. lt ~;r. J ti r: d ijt:l ~r
-.'· -~-·! .. !:i 21 ::t!~ ·~:· ~c ·. ~:-iP:!'i s ~.1 ~: ~~ c':!::;::::~.! or: oc1 :c1::;'\ o f G;-.;c ~ ?.-
_: J · ::"'::-i :.:::;:·;! i :i S..!_·:wc I J . : .i ::~ L O ('.:~::.l::~1 i:..;. \\~:::-:!tr:::::: l'i :: rr:::.-
:~:..::-:-: :'.:-.:-5 ..::.~::i::""':-: Ci-li:.J i:,_·.: o: C r;.·::r ~~.L.;:;:-~d !·:-o ~ r:;:: l.:Ju ~:i~ e .:.;~
8..;:: . ..:i r.~ ... L1 :l.: ;?. .. :: r..•r rr:1'r: c: .. 1:i {".\,) :;;:.'nc , 1r. r.c :~:i: J:-:..! h.i ·:in,; n1...'r
r._l'r.: r::..!:i 6 .C.t ..f; s .:;t.:~~ l e::[ o ~ ~:--o,:.: ... ·~.:J r\·v f :ir .. ·J :i n'1 \\ ~t!r:! ch..::-.: b J
r.1 mi :l~.!i71 I )-f1)0r r~r ~·s t:p.irJr iLl n d 1,::1f:1.::: f:-.,r.1 c::c k:JC in ~ ~J g l! or" c h~
r.:.u f h • a kH ltr.~ or. a:! siJ c, of th.: b u i i,;1n ~. ~\:c p~ fcJr ,:r~~t fro nh or
r ub l i• v. J> » ;;,.!1; be ~c rr.1 iu~J tu hJ ' e rt 'uf , of \'0 . I -=~J J r or r~tb o.;J
:5 h .i k ~s a n ~ i\·o I shin~l c-) ... ~o n )t ru ~t~J ir, a .. ·L't)rJ •. in1.:~ \'-ith Sc:.:ri or:
15 05 .6 .
~~ 1505..2 Class A roof assemblies. Class A roof assemblies are
th os e thJt are effect iv e agJin st Se\e re fir e test expos ure .
Cb ss A roof ass emblie s and roo f CO\·e ri ng .; shJl l be lis ted and
identified as CIJ ss Ab) an approved testi ng agenc y. Cbss A
roo f assemblies sbll be: pc:rmi tteJ for use: in bu ild i n g~ or
strnctur es o f all type s o f con stru c ti on .
Exception: Clas s A roo f as se mblies Lr.elu de: th ose: with cover -
ings of brick . masonry. slate!, cby or con1.1ete roof tile, expo sed
con1.-rete roo f deck . ferr ous or copix~ shin gles or sheets .
1505.3 Cbss B roof assemblies. Cbss 8 rn o f assembltt-s are
th0se th .It are e ffrcti ve again s t moder:ito:: fi rt!-t<::st exposure .
Cl.i:;s 8 ro0f asserr.bl ies a nd ro of co verings sha ll be! li sted
· and ido::nti fie d as Cbss B by an appro,·ed testing agt!n cy.
Excepti o n: C!J ss B roo f a ssemb lies include those wi th
co,·eri ng:; o f metal sheets and sh in fb .
1505A Cla ss C roof assemblies . Clas s C roof ass emblie s are
th~~se th:it are effective again s t light fire-test exposure. Cla ss
C roof assemblies and roof covering s shJll be listed and iden-
tified as C!J ss C by an approved te sting agency .
1505.5 ~onclassified roofing. l\'oncbssitied roofing is
approved material that is not listt!d as a Cl:iss A. Class B or
Cbss C roof co vering . -
1505.6 Wood shingles and shakes.\\ lien testing wood shin-
gks and shakes in accordance! with ASTM E IOS and ASTM
D 2893 (induding Method A and B of the rain test), the fire
tests shall indudt! th<! intennittent flam<! test, spread of flam<!
test, burning brand test and flying brand lest. Additionally, at
the conclusion of the rain test, test panels shall be subjectt!d
to the intennittent flame test, burning brand test and flying
brand test. Shakes and shingles sh:itl also be subjected to the
weathering test as specified in UL 790.
-----~-~--~ .... _. --........ _ .. _ ... .,,... .,...,.._nd
TABLE 1505 .1 -1507.1
1505.6.l Fire-retardant-treated shingles and shake s.
Fir e-retardant-treated wood shak es and shingle s shall be
tre atc:d by impregnation wi th che mica ls by the fu ll-cell
vac uum-pressure proce ss. in ac cord ance wi th A\VPA CI.
Eac h bundk shal l be marked to ide nt ify the manufact ured
unit and th<! m anufa ct ure r. a ~d sh:il l also be lab el ed t•:i
idc:nt ity the: clas s ifica tior. ot· the m:i tt!ri al in accord:i nce
\;.·ith th<! tes t ing: r eq:..::~::'j ir: Se..::tiOi~ 1505 .6 (C l:iss 8 or Ci.
t'°:::' t:ea~i n g co m pa n :-· an d t::e c u:i !i ry control age ;:cy
1 :o5.7 S pecial purpose ro ofs . S:Je .:i:!! purp ose woo a s h:~~'.::'
or woo d shake ro ofing: s h:i~l co nfo'111 with the gradi ng anc
rr ppl i.:a rio n requiremen ts o f Se ccio;-. 150 7.8 o ~ 15 07.9 . h
additi on . an underla y mt!nt o f 0 .625 in.:h (15 .9 mm) Type X
-water -r esis ta nt gyp sum ba ckin g bo a.r d or gyps um sh eathing
sh J ll be! p!Jc ed under minimu m nomi nal 0.5-i nc h-t hi.:k (12.7
mm) wood strucrural panel sol id she athi ng or I -inch (2 5 mm)
nom ina l spact!d sht!athing . ~ _.
SECTION 1506
MATERIALS
15~1 Scope. Th<! requiremen ts set forth in thi s sect io n sh:ill
appl y to the application of roof co\·ering m:iterials specified
herein . Roof coverings shall be applied in accordance with
this chapter and the manufacturer·s installation instructions.
Installation of roof coverings shall comply with the applica-
ble provisions of Section 1507 .
15062 Compatibilit)' of materials. Roo fs and roof covering s
shJll be! of materials that a.re compa tib k with each other and
with th<! building or strucru re to wh ic h the material s are applied .
15063 l\laterial specifications and physical characteris-
tics . Roof covering matt!rials sh:ill confonn to the appl icabl e
standJrds li sted in this ch :i pter. In the absence of appl icabl e
standJrds or wht!rt! m:itt!rials are of questionable suit abilit y.
tes ting by an appro ved !<!stin g agen cy shall bl! req ui r<!d by the
bu ilding official to dt!tt!rmine the ch:i ract<!r. quality and limi -
!Jtions of application of the materials .
1506A Product identification . Roof covering materials
shJll be d<!livert!d in pacbges b<!aring the manufacturer's
identifying marks and approved lt!sting agency labels
required in accordance with Section 1505 . Bulk shipments of
materials shall be accompanied with the s:ime infonn:ition
issut!d in the fonn of a certificate or on a bill of lading by the
manufacturer.
SECTION 1507
REQUIREMENTS FOR ROOF COVERINGS
1507.1 Scope. Roof coverings shall be! appli.:d in accordancl!
with the applicable provisions of this section and the manu-
facturer's installation instt\lctions.
•
Appendix 8
FIRE-FLOW REQUIREMENTS FOR BUILDINGS
SECTION 8101
GENERAL
R 10 1.1 S cope . The pro c e d u:-e fJ r cetermin ir.g fir e-fJ O'.• r ~
.::.:::e ::-:e~G fer cu'.~d!n~S or ~Ortl 0 r. -of bt.:i 1 cir:~S r.~r e:.:;·~e' ::~ ·
.>:~:.::::!2 s:-:2 ~~ t -: 1:1 a:c o rC.:i ::.:~ \~:1·:-.-:1s ~==-~~:!.\. !~ .. ~
2 ;~~::C 1x. cc c :; 1 :0 ~ 2 ?ply t 0 su-~:c u r~5 C(:-:~:--t:iJ:-. bt.n :d r:-:]~.
BlO-U Type IA and Type IB constructi on. Th e ti re ar e:i. o f
bui ld ing s con stru c ted of T~ f:e L\ a nd Typ e IB c onstrue ti o r.
s:n!I be the ar ea o f the t hr ee l:i.rge s t s:i..:.:6S i'-e fl oo rs.
E xc ep tion: Fi re are:i for o;::en i:;rk.:r.g gx:i.ges sh:i l! be de -
t~~.:::~~ t:: l!:e 2.r :::2 o ~· r ~~ ~2 :-_?~:5: f.:.:~
SECTION 8105
FIRE-FLOW REQUIREMENTS FOR BUILDINGS
SECTION 8102
DEFINITIONS
. _ B 105.1 One· and two-family dwellings. The min imu m fi e:!
tl uw req uirements for one-and two-family dwellin 2s h:i.\in 2 ~
B 10.!.1 Definitions. For tht! purpose o f this a ppen d 1.\, cem.i n ti re area wh.ich dot:s not exceed 3,600 squ:i.re feet (3-i-t m~) sh~!!
tams are defi ned as foll o ws : . ·be l ,00 0 gallons per minute (3785 Umin). Fire flow and flow
FIRE RE . . ,.. . ,.. duration for dwellings having a fire are~ in e.:ccess of 3 ,600 A A. The floor area. tn squ:ir e fret , u)ed tu dt:t~rm in~ ;1 f (3 • A ') h II b I h -h • ·fi d · T bl
th · d fi fl squ:ire eet ........ m-s a not e ess t ant at spec1 1e in a e e require ir e ow. B 105 . I..
FIRE FLO\\". The flow ra te of a water supply . meas ured at 21)
puu nds pe r squ :J.J e in..:h (p si ) (I 3 S kPa ) r.:sidu :i.I r r'-'ss:.m:. thJ '. is ?
a \ai bble fo r fir ~ fightin g .
SECTION 8103
MODIFICATIONS
B 103.1 Dec re as es. Tht: fire ch id is authorize d tu redu ce the
tir.:-fl uw req uir ements fo r isobted bu ilding s er a gr oup of
buildings in rur:i.I area s ors mall commun ities\\ hae thctle \ el-
opment of fu ll tire-flow requirements is impr:i.:t ical.
Il 103.2 Increases. The fire ch.id is auth orize d to in c rease the
fae·fl O\\ re-i ui rements what: c o nditi o r.s ind i..:ate an unu su :il
su s;:eptib il ity tu group fire s orconnagratiuns. An increase sh:i.1 1
not be rnure th:i.n twice that requirt:d for the bu ilding under con -
sider:i.t ion .
8103.3 Areas without water supply s)·stems. For infor m:i.-
tio n regarding water supplies for fire-fighting purposes in ru r:il
and suburban are:i.s in which adequate and reli:i.ble water supply
systems du not exist, lht: codt: official is authoriud to uti li u
f'.."FPA 123 l or the IFCl Urban Wild/and /11teifa ce Codi!.
SECTION 8104
FIRE AREA
B 10-U General. Tht: fire area shall be the tot:il floor area of all
floor le\·els with.in the exterior walls, and under the horizontal
projections of the roof of a building used to protect storage or
use areas, e:\cept as modified in Sections B 104 .2andB104.3 .
B 10.i.2 Aru separation. Portions of buildings which are sepa·
rated by fire walls without opc:nings constructed in accordance
with the l11temational Building Code are allowed to be: consid·
• . 1· crcd as sep.1Catc: fire areas.
Exception: A reduction in required tire flow of 50 pt:r cent ,
as a pproved, is allowed where the building is equipped
i~o ughout with an approved automat ic sprinkler system in
a.:l'."ord ance with Chapter 9 of the /!ltem at io11al Fire Code .
B 105.2 Buildings other than one· and two-family dwellings.
The m.in imum tire flow and flow duration for buildin2s otht:r
than one-and two-family dwellings shall be as specifie-d in Ta-
ble B 105.1.
Exception: A reduction in required tire flow of up to 75 per-
cent, 33""approved, is allowed when the build ing is providt:d
with an approved autom:i.t ic sprinkler system installed in ac -
co rd:i.nce with Se c tion 90 3.3. I . I or903.3 . I .2 of the ln!t?ma -
ti onal Fire Cod e. The resulting tir e fl ow shall not be les s
tha n 1.500 g:i.llons per m inute (567 S Umin .).
I
' ~
I .
!
I
.i
,,,
APPENDIX B
TABLE 8105 .1
F IR i:.·F LOW FiE ::.J1 R::ME NT S FOR BUILD INGS
MINIMUM REQUIRED FIRc FLOW AND FLOW DURATION FOR BU I LDINGS
Tyce IA and 19'
0-22 .7.'.iO
22.7 0 l ·3C.21;1,
3·:J .20 i .J ~. /Ci)
: 3 .I V I-~~ :.:(·
I S J./0'.-~7.1 ·~1 :-
S -. i 0 ! ·I I 2. i'C1:
11 2.70 1·12 5.'i CO
12 8.70 1-1.15 .900
l-tS .9 0 1-1 6-U OO
164 .20 I· I S3.4 G-O
I SJ .4 01 -2 0 3.7 00
20 3.70 i ·22 5.200
225 .20 I ·24?. 700
24 7.70 1·2'il.2G{)
271.201·295 .900
295 .901-G:c:J tc:r
-
-
-
-I
-
-
-
-
I
I
I
I
I
I
Tyce IJ A ar.d IJI A •
O-l 2.7 CO
12 .7 0 1 ·17.C~G
1 'i .CDI ·2 1.8 00
2 1 .S0 l ·2 -t .2 CO
:_:_:·~: -2; -~·~ ·~
.. .. .. -. -.
:.:.-·-1 ·_•7, .,_._
.!7 l ):.5..;c;i~(·
5-t S O i ·6 J .D J
6 3.-t 0 !·72A OO
i2 .-t GI -8 2. !00
82 .10 I ·92.4 00
92.401-103.100
103.101·114.600
11.\.6 0 I·12 6.700
12 6. i O I· 13 9 .4 00
l 39..1 0 !-152 .6CO
152 .601-1 66.5 00
16 6.501-Grc:J t.:r
-
-
-
-
-
-
-
-
FIRE AREA (square feet )
I
I
I
I
I
I
Tyce I'/ an d V·A '
c.s .2 00
S.2.) l · l ).9C j)
I OSC l ·I 2S r:iJ
I 2. 90 I · 1 7 . .!({\
t -I •' "' ' "' • •
I '.-.·; ·-• .: • •
_:;._J ,,}. __ ,._._. -'·
31). l c. ! -3 5 .~1J(·
35.2t:; -~ ).C ~1 )
-t 1}6 1J I ·-t 6 . .1 00
.1 6 .4 0 I ·52 .500
52 .501 ·5 ':},!00
59.101·66.0GO
66 .00 l · 7 3.3 CO
73.3 01 -S l.IOO
8 1.101 ·8 9.2 1)0
89.20 1·97.700
97.701·1 06.500
106 .501·115.8 00
115.S O l · 125 .500
125 .50 1-135.5 00
U5.5 0 1 ·l-t5.SOO
1.15 .801 -15 6.700
15 6.70l ·167 .900
167 .90 1·179..1 00
I 79 .4 0 I · 1 91. 400
191 .4 0 I ·Gr c:atc:r
I
I
Tyoe 119 an d 1119'
0-5 .900
5.90 1·7.9 ')1)
7.9 01 -9.8 00
9.80! · l 2.6CO
! 2.:.::. j )_.!.:r;
I.) . .!.) i ·2 i .500
21.8 0 l ·25.91)1)
25.9 0 i .2>;.3 00 I
. -I 29 .3 01·33 .5 00
33.5 0 I ·3 7 .900 I
37,9 0 1·42.7 00
~' 42 .70 1 -~7 .700
47,7 01-53.00 0
53 .00 l ·S S.600
53.60 l ·65.4 00 '{
65.4 01-70.6 00 I
70 .60 1-77 .000
77,001·83.700 I
83.701 -90 .600
90.60 1-97.9 00 --· 97 .90I ·1 06 .8 00
I 06.801-113.200
113 .20 1-121.300
121.30 1-129.600
129.601-138.300
l 33.301 ·Grc:atc:r
I Tyce V-8'
I 0-3.6 CO
3.60 l ·4 .8 01)
-t .S:) 1 ·6.20i)
I 6.2 01 -7 .1 (1~
13 . .1 0 1-1 5.cC O
15.60 1-18.C-OO
18.C{) 1 ·2 0.600
20 .601-23.3 00
23.301-26.300
26.301-29.300
29 .301-32.600
32.60 l -36 .000
36.001-39.6 00
39.601-43.4 00
43.401-47,400
47.401-51.500
51.501-55.700
55.701-60.2 00
60 .201-64.8 00
64.801-69 .600
69.601-74 .60 0
7-t .60 1-79 .800
79.801 -85.1 00
SS . I 01-Gre:i tc:r
f Jr SI 1 S-J ~:!."! foe [= 0 09 :9 m 1• 1 g::i lic'n p:r mi n u t~ = 3 .785 Um. 1 r o unJ p~r squ:!I~ i r.~h = 6.895 kPa .
a T~ r.:s of con.;:J :i ·:tio n :i.r~ b JS~J o n th.: l r.:a1rcJ tiv 1:L1 l B.iilding Cud(.
b M!a:;umJ at 2•) psi .
I Fl?.= FLOW I FLOW I
l r g allons cer minute )" DURATION (hours )
I 1.5 ~(·
I l I.I 5::•
I :.w : I I
i j ... ; . -I -·--'-:
I 3 .~5 .~
I J 3.5~0
I 3./5 0
I 4.0CO
4 .25 0 -
--
4,5 00
I 4.75 0
5.CCO
5.25 0
I 5.5 00
I 5.75 0
6.0CO 4
6.250
6.5 CO
I 6 .75 0
I 7.0CO
I 7.25 0
I 7 .5 CO
I 7.75 0
8 QI))
2000 INTERNATIONAL. FIRE cooee '.
;• r
. •
f.
I.
..
Appendix C
FJRE HYDRANT LOCATIONS AND DISTRIBUTION
SECTION C1 0 1
G =NER AL
. .
. :::-.:.-~.::::.::~:--. ..::·(:..:~:.-.~:-:-::.::::~:-. .:"'~l-.. :·:-:: .. -::-:---:-::·.-.
s::CTI ON C1 02
LOCAT I O N
C 102.1 fir e hydr;rnt l ocatio ns . Fi r::: h;drJ:1b S h .!~. h : r r..:-
\ iJ:::d a!o r:g r:q!.!ir cd fa<' appar a~us ac ce ss ro:ids a nd :i dj J :::~.'.
publ ic strc:::t.;.
SECTION C103
NUMBER OF FIRE HYDRANTS
Cl OJ.I fi re hyd ra nts a \·aib b l c. Th e m inimt:m n!.!mcer of tir:::
h;dr:in ts "" 1:1:Jble to a build ing s h:ill no t b<: lr:.;s th:i:i tr.J t lis!d
i:i T:i blc (105.1. Th e n um ber of tire h;d r:in t.; a \J il:iblc L: :i.
co mplex er s ~bJ i vis i on sh:i ll not be les s th:i n th:i: d eterm:r..:d
by spac ing re quircm e nts list :::d in T able C l 05 .1 \'he n l ;:>pl ic.:! to
tir e app.i::i tus acc es s ro ads a r.d perim.:ter p ubli c s t:e :::ts f~0 r.1
wh ich fir e Of:er ati ons c ou ld be c o nduc ted .
SECT !mJ C1 04
CO NSIDERATIO N OF EXISTI N G FIR E HY DRA NTS
(' 111 ..!. l E xi s tin ? fi r e hyd r::i:i '-'· ~·<'..s :::'.: r:~~ ~.-.::~:~.:s co. c-·~'-
.: .)::-.:~:.~ Q.:-~ .:!lt~-=· ... .::.. ~--.. :·-.~:.:~:-::-:~ ::.:::.::: . .:. ~....:.:.::.:-.:
.::. _: . .:~.~ ~:-.:::ss ri:-~ ~~~::.:.:...:.; 2:~=~s f .J ~CS C 'C~i:Li bCL 1.•1·~~:-.
~ ~:~e ~:::? 5 J.:i~ e~ser.ie;--.;::; x-~ e ;;:.J.J ! i:i::::j ro p::!\ ~~.: cbsrru.:t:c 1 .
([ S:..!:h r 0J.~S -
SECTION C105
DISTRIBUTION OF FIRE HY.DRANTS
C 105. l Hydrant spacing. The ave rag: s pacing b~twe<'n fir e
hyd r:in rs shall no t e xc e ed tha t listed in Table Cl 05 .1.
Exc eption : Th e fir e ch ief is a ut ho riud to a.:c e pt a d e ti -
c ~n c y o f up to I 0 pe rcen t \'here e '(i st in g ti re hydr :i nts pr o-
\id.: all or a portion of the requi red tire hydrant se rvic e .
RcgJJ"dk ss of th e a vera ge sp ac ing . ti re hydra nts shall be lo-
cat ed su c h th:it all po ints on stnets and ::.:cess roa ds adj acent to
a build ing arc with in the d istances li s t ~d in Table Cl 05 .1.
__ TA BLE C105 .1
NU M BER A ND D ISTR IBUTION OF FIRE HYDRANTS
F!nE·F LOW REOU1i1 E.'.1 ENT MINIMUM NU\fS:R
(gpm ) OF HYD RANT S
1.75 0 er ks ; l
2.0C0-2.250 2
2 ,5 l,"i) I J
J .OC'O J
3.500 --1 .000 4
-1 .500 -5 .000 5
5.5 00 6
6.000 6
6.500 -7.000 7
7.500 or more 8 or more •
Fo r SI : I foo t= 3o..i .s mm. I gallon p.:r minut.: = 3 .785 U m.
3 . R.:duce by 100 f.:et for d.:ad -end streets or roads .
I AVERAGE SPACI NG
BC:TYI EE N HYDRA NT S .. b.'
(f eet )
I 500
I 450
! 450
I 400
I 350 I
I 300
I 300
I 250
I 250
I 200
I
MA X:.',fUM DISTA NCE FROM
A.>.jY P O l ~IT ON STREET OR ROAD
F RO~<TAG : TO A HYDR ANr
I 25 0
I 225
' I 2~5
I 22 5
I 210
I ISO
I 180
I 15 0
I 15 0
I 120
b. Wh.:re street s :ite provided with median di viders wh ich can b<! cr oss.:J by fire fight.:r> pullin g hos .: line s. or where aneria l stree ts :it e pro•·id.:<1 with fou r or more
trafli.: l.111.:s JI1J ha •e a tnffi c count of more th :i n 30 ,000 ve hi ck s p::r <l ay. hyd r:lllt spa cing sh;ill average 500 feet on each side of lh e meet JII J b.: lfTa nge J on an Jt-
1.:m.ll i n~ bas is up to a fire -flow requirc:mc:nt of 7,000 gJll ons pa rn i~u te Jnd .l CO f.:et for highe r fire -flo w n:quimn.:nt s
c . Whc:re ne w water mains uc extenckd ;ilong stre.:ts where hydrJilt.; :ite nll t needed for pr ct.:c tion of structures or sirnil:it fi re probkrn s. fir~ hydrJ nts shall b.: pr o-
vid"-d at spac ing noc 10 e.tceed 1,000 feet to provide: for transp01ution h.:u:itd s.
d . Reduce by SO feet for dc:;id-cnd streets or road s.
e . One hydr.lllt for each 1.000 pllons per minute or fraction thereof.
359
Drainage Report
P1 ·eparedfo1 ·:
ELMS ORTHODONTIST
City of College Station
Brazos County, Texas
PK Job No . 3 7105-291
Date:
D ecem b er 12, 2005
Prepared by:
Pledger Kalkomey, Inc.
Con s ult ing E nginee rs
7020 Coyote Run • Bryan , Texas 77808
979-731-8000 • 979-731-1500 (Fax)
www .pkcnginecring.com
Brenham • 81yon • Rosenberg
_,,,,,,,,
---~€.OF Tc.t ''t -t:;,~ ••••••• "f.j' '•
? .····*··.. ,, ~-.. ··*'1 "*: ··*I. ~ ... ·~ ·r.: ouNCAN· ... ·~
I.· •••.•..•••••••••••••••••• ~
~ ·• 83252 : t 1-<>·. :k,,,,
1, "b; · <.1c •• ~;-
CE RT IF ICATION:
I here by certify th at thi s re po rt was pre p ared by me (o r und e r my
s up e rvis io n) in accord ance w it h th e prov is io ns of the C ity of Coll ege
Sta ti o n Dra in age Po licy a nd D es ig n Stand ard s for th e owners th e reof.
'• ······· ~.:/ ' -J,~[c?f {93
I~ 05 .. ~
\'.).\ r~\DCJ iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiillliiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii--iiiiiiiiiiiiiiiiiiiiiiiiilmiiiiiiiiiiiiiiiiiiiiiiiii~q ·;~'[_..,
PURPOSE
Development of the
buildings , sidewal ks ,
area affected by the
s u bj ect prope rty involves t he a ddition of
dr i ve, and park ing spaces . The dra inage
de ve l o pment con tai n s approximately 0. 94 7
acres of land .
(she et 2 of 2,
the engineering
developmen t .
METHODOLOGY
Re f erence is made to the attached grading plan
dated 12 /12 /0 5) drawing. This report documents
analysis of the excess runoff due to the
Using field survey ing data the watershe d affected by ·the
proposed development inside the prop er ty was delineated.
The Rational Method was u sed t o compu t e the peak flow rates for
this study. The area (A ) o f e ach drainage area wa s obtained
from the topo graphical maps. Based on existing land patterns,
the weighted c factor for the area was determined. A velocity-
distance relationship was u s e d to compute the time of
concentration (tc ) for the area· with a minimum time of
concentration of ten ( 10) minutes. The rainfall intensity (I)
for the drainage area was determined using the intensity-
d u rati o n-frequency curves for the Ci t y of Col lege Station
(Figu re III-1, Drainage Policy a n d Design Standards).
The p e ak fl ow rate (Q) for the existing drainage area was
computed with the following formula:
Q = (CJ (I) (A)
The procedure was then repeated for the developed conditions of
each of the watersheds. After development, the boundaries and
S:\2005\37105-291 PAYNE-Elms\drainage report\dra in report-ELMS.doc
areas o f the p roposed wa te rsheds dif f er fr om that of the
existing watersheds du e to the re-grading of the property .
For the drainage c o llection system, capacity for the curb inlet
on Emerald Plaza was c alculated using the weir equ ation
(Q = CL H1 ·5 ) wi t h a depth of six inches (6") and a l ength of
fifteen feet (15 ') for the inlet openi n g. Capacity f o r the
grate inlets on the west side
equation (Q
of
=
the property wa s
CA(2GH)0 ·5 ) with a
determined
depth of using the orifice
fiftee n inches ( 15")
grate.
and an area e qua l to the open area of each
RESULTS
The drainage area inf ormation and the calculations for t h e
existing and proposed conditions are attached.
The subject property is within the 1 00 -year flood plain of Bee
Creek Tributary A. Drainag e Areas I and II each drain into an
existing TxD OT grate inlet on the western side of the property,
and Drainage Area III drains into the existing cur b inlet
located on the south side of Emerald Plaza. This storm drain
then discharges directly into Bee Creek Tributary A . No
detention is proposed since
and the increase in runoff
this property is already s ubmerged
from the proposed development wi ll
result in no significant change to the flood plain.
The changes in flow rates are as foll ows:
S:\2005\37105-291 PAYNE -Elms\drainage report\drain report-ELMS.doc
DRAINAGE ARE A I
EXI S TI NG AR EA = 1 ,3 3 7 SQUARE F EE T
PRO POS ED AR EA = 5,51 6 SQU ARE FEET
Storm EX I S TI NG PEA K
Eve nt FL OW RATE (c fs )
2 yr 0.0 9
5 y r 0 .11
10 yr 0.1 2
25 yr 0 .1 4
1 00 y r I 0 .16
DRAI NAGE ARE A II
EXISTING AREA= 11,275 SQUARE FEET
PROPOSED AREA= 9 ,064 SQUARE FEET
Storm EXISTING PE AK
Event FLO W RATE (cfs )
2 yr 0 .62
---
5 yr 0 .76
10 yr 0 .85
-----
25 yr 0 .9 7
·--·-
1 00 yr 1.14
S :\2 005137105-29 1 PAYN E-E lms\dra ina ge re port\drai n re po rt -ELMS .doc
,.
P ROPO S ED PEAK
FLOW RATE (cfs )
0 .5 3
0 .6 4
0 .7 2
0.82
0.9 7
PROPOSED PEA K
FLOW RATE (cfs)
0.9 9
1. 2 0
1. 35
--.
1. 5 4
1. 81
--------
DRAINAGE AREA III
EXISTING AREA= 28,632 SQUARE FEET
PROPOSED AREA= 26,6 5 3 SQUARE FEE T
S t orm EXISTING PEAK
Event FLO W RATE (cfs)
2 yr 1.7 0
5 yr 2 .07
10 yr 2.33
25 yr 2 .66
100 yr 3.14
S:\2005\37105-291 PAYNE -Elms\drainage report\drain repo rt -ELMS .doc
PROPOSED PEA.K
FLO W RATE (cfs )
3.29
4 .0 0
4.49
5.13
6.05
DRA WING S
E LMS ORTHODONTIST
CITY OF COLLEGE STATION
BRAZOS COUNTY , TEXAS
~ ..... _.,.
2-YR STORM EVENT
ELMS ORTHODONTIST
CITY OF COLLEGE ST A TION
BRAZOS COUNTY, TEXAS
ELMS ORTHOD O NTIST
CITY OF COLLEGE STATI ON, B RAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STAT ION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D
2 YR STORM 65 8 .0
EXISTING
DRAINAGE AREA 1
TR AV EL
TYPE LF %
T C , MI N NATURAL GRASSLAND 96 3.8 %
TYPE
c -NATURAL GRASSLANDS (3.8 % SLOPE )
I, IN /HR B/(TC+D )"E
TYPE
A , ACRES NATURAL GRASSLANDS
Q ,CFS CIA
PROPOSE D
D RAINA GE A R EA 1
TRAVEL
TYPE LF %
TC , MIN LANDSCAPED 26 15 .8%
LANDSCAPED 132 2 .7%
I TYPE
c -
E
0 .806
V ,F P S
Tab le 111 -2
2.50
IC (Tab le 111 -1) I
0.46
V,FPS
Table 111-2
7 .00
3 .00
I C (Tab le 111-1) I
0 .85
0.60
0 .60
12 /9/051 :37 P M
TI M E
SE C MI N
38.40 0 .64 -----10 .00
% c
100 .0% 0.46
100 .0 % 0.46
6 .33
SF ACRES
1,337 0 .03
1,337 0 .03
0 .09
TIME
SEC MIN
3 .71 0 .06
44 .00 0 .73
10 .00
% c
22 .5% 0 .19
67 .5% 0.40
10 .0% 0.06
LANDSCAPED (12 % SLOPE)
LANDSCAPED (4 % SLOPE)
IMPERVIOUS (40 % SLOPE)
--------~
I , IN/HR B/(TC+D)"E
I TYPE
A , ACRES LANDSCAPED (15 .8 % SLOPE)
LANDSCAPED (2 .7% SLOPE)
IMPERVIOUS (40% SLOPE)
Q , CFS C IA
100 .0% 0 .66
6 .33
SF ACRES I
1,241 0 .03
3 ,723 0 .09
552 0 .01
5,516 0 .13
0 .53
ELMS ORTHODONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAlf".IAGE POLICY AND DESIGN STANDARDS
STORM EVENT: 8 D
2 YR STORM 65
EXISTING
DRAINAGE AREA 2
TRAVEL
TYPE LF %
TC , MIN NATU RAL GRASSLAND 235
I TYPE
c -NATURAL GRASSLANDS (2 .0 % SLOPE )
I , IN /HR B/(TC+D )"E
I ·TYPE
A , ACRES NATURAL GRASSLANDS
Q ,CFS C IA
PROPOSED
D RA IN AG E AREA 2
TC , MIN
C , -
I, IN /HR
TYPE
LANDSCAPED
I TYPE
LANDSCAPED (16 % SLOPE)
LANDSCAPED (3 % SLOPE)
IMPERVIOUS (40 % SLOPE)
B/(TC+D)"E
LF
I TYPE
A , ACRES LANDSCAPED (16 % SLOPE)
LANDSCAPED (3 % SLOPE)
IMPERVIOUS (40 % SLOPE )
Q , CFS CIA
TRAVEL
%
189
8.0
2 .0 %
1 .9 %
E
0 .806
V , FPS
Tab le 111-2
1 .70
I C (Tab le 111 -1) I
0 .38
V ,FPS
Tab le 111-2
2 .00
I C (Table 111-1) I
0 .85
0 .60
0 .60
12 /9/05 1 :37 PM
TIME
SEC MIN
138.24 2 .30
10.00
% c I
100.0 % 0 .38
100 .0 % 0.38
6.33
SF ACRES I
11 ,275 0 .26
11 ,275 0 .26
0 .62
TIME
SEC MIN
94 .50 1 .58
10.00
% c
59 .5% 0 .51
25 .5 % 0 .15
15 .0 % 0 .09
100.0% 0 .75
6 .33
SF ACRES
5 ,393 0 .12
2 ,311 0 .0 5
1 ,360 0 .03
9 ,064 0 .21
0 .99
ELMS ORTHODONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D
2YR STORM 65
EXISTIN G
DRAINAGE AREA 3
TRAVEL
TYPE LF %
TC , MIN NAT URAL G RASSLAND 247
I TYPE
C , -NATURA L GRASSLANDS (2 .7% SLOPE )
I, IN /HR B/(TC +D)"E
I TYPE
A , ACRE S NATURAL GRASSLANDS
Q ,CFS CIA
PROPOSED
DRAINAGE AREA 3
TRAVEL
TYPE LF %
TC , MIN LANDSCAPED 37
PAVEMENT 96
GUTTER FLOW 18 8
I TYPE
c -LANDSCAPED (3 % SLOPE)
IMPERVIOUS (2 .5% SLOPE )
8 .0
2 .7%
1.4 %
2 .3%
1.8 %
E
0 .80 6
V,FPS
Tab le 11 1-2
2.40
IC (Ta ble 11 1-1) I
0.41
V , FPS
Table 111-2
1.50
3 .00
5.00
I C (T abl e 111 -1) I
0 .62
0.90
12/9/05 1 :50 P M
TIME
SEC MIN
102.92 1.72
10 .00
% c
100 .0% 0 .4 1
100 .0% 0.41
6 .33
SF I ACRES I
28 ,632 0 .66
28 ,632 0 .66
1.70
TIME
SEC M IN
24 .67 0.41
32 .00 0 .53
37 .60 0 .63
10.00
% c
18.0% 0 .1 1
82 .0% 0 .74
~~~~~~~~~
I, IN/HR B/(TC+D)"E
I TYPE
A , ACRES LANDSCAPED (3 % SLOPE)
IMPERVIOUS (2 .5 % SLOPE)
Q , CFS CIA
100.0 % 0 .85
6 .33
SF ACRES
4 ,798 0 .11
21 ,855 0 .50
26 ,653 0 .61
3 .29
5-YR STO RM EVENT
ELMS ORTHODONTIST
CITY OF COLLEGE STATION
BRAZOS COUNTY, TEXAS
ELMS OR THODONTIST
CITY OF COL LE GE STATI ON, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLIC Y AND DESIGN STANDARDS
STORM EVENT:
5 YR STORM
EXISTING
TC , MIN
TYPE
NATURAL GRASSLAND
B D E
76 8 .5 0 .785
DRAINAGE AREA 1
TRAVEL V ,FPS
LF % Tab le 111-2
96 3 .8 % 2.50
12/9/05 1 :51 PM
TIME
SEC MIN
38 .40 0 .64
10 .00
I TYPE IC (Tab le 111-1) I % C I
c -NATURAL GRASSLANDS (3 .8 % SLOPE)
I, IN /HR B/(TC+D )"E
TYPE
A , ACRES NATURAL GRASSLANDS
Q ,CFS CIA
P ROPOSED
DRAINAGE AREA 1
TC , MIN
c -
I, IN /HR
TYPE
LANDSCAPED
LANDSCAPED
I TYPE
LANDSCAPED (12 % SLOPE)
LANDSCAPED (4 % SLOPE)
IMPERVIOUS (40 % SLOPE)
B/(TC+D)"E
TRAVEL
LF %
26 15 .8%
132 2 .7%
I TYPE
A , ACRES LANDSCAPED (15 .8% SLOPE)
LANDSCAPED (2.7 % SLOPE)
IMPERVIOUS (40 % SLOPE)
Q , CFS CIA
0.46 100.0% 0.46 ~~~1~00~.o=~~o ~~~~0-.4~6
V ,FPS
Tab le 111 -2
7 .00
3 .00
I C (Table 111-1) I
0 .85
0 .60
0 .60
SF I
1,337
1,337
TIME
SEC
3.71
44 .00
%
22 .5 %
67 .5 %
10.0%
7.69
ACRES I
0.03
0 .03
0 .11
MIN
0 .06
0.73
10.00
c I
0 .19
0.40
0 .06
~~~~~~~~~
100 .0 % 0 .66
7 .69
SF I ACRES I
1 ,241 0 .03
3 ,723 0.09
552 0 .01
5 ,516 0 .13
0 .64
ELMS ORTHODONTIST 12 /9/05 1 :51 PM
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
5 YR STORM 76 8 .5 0 .785
EXISTING
DRAINAGE AREA 2
TRAVEL TIME
TYPE LF % SEC MIN
TC , MIN NATURAL GRASS LAND 235 2 .0% 138 .24 .. 2.30
10.00
I TYPE I C (Table 111 -1) I % c I c -NATURAL GRASSLANDS (2.0% SLOPE ) 0 .38 100.0% 0 .38
100.0 % 0 .38
I, IN /HR B/(TC+D )"E 7.69
I TYPE SF I ACRES I
A , ACRES NATURAL GRASSLANDS 11,275 0 .26
11 ,275 0 .26
Q ,CFS CIA 0 .76
PROPOSED
DRAINAGE AREA 2
TRAVEL V ,FPS TIME
TYPE LF % Table 111 -2 SEC MIN
TC , MIN LANDSCAPED 189 1.9% 2 .00 94 .50 1.58
10.00
I TYPE IC (Table 111-1) j % c I c -LANDSCAPED ( 16% SLOPE) 0 .85 59 .5% 0 .51
LA NDSCAPED (3% SLOPE) 0.60 25 .5% 0 .15
IMPERV IOUS (40% SLOPE) 0 .60 15 .0 % 0 .09
100.0% 0 .75
I , IN /HR B/(TC+D)"E 7 .69
I TYPE SF I ACRES I
A , ACRES LANDSCAPED (16% SLOPE) 5 ,393 0 .12
LANDSCAPED (3% SLOPE) 2 ,311 0 .05
IMPERVIOUS (40% SLOPE) 1,360 0 .03
9 ,064 0 .21
Q ,CFS CIA 1.20
ELMS ORTHOD O NTIST 12 /9/05 1 :58 P M
CITY OF COLLEGE ST AT ION, BRAZOS COUNTY, TEXAS
REFERENCE : Co'LLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
SYR STORM 76 8 .5 0.785
EXISTING
DRAINAGE AREA 3
TRAVEL V ,FPS TI ME
TYPE L F % (Ta ble 111-2 SEC MIN
TC , MI N NATURAL G RA S SLAND 247 2.7% 2.40 102 .92 1.72
10.00
I TYPE I C (Table 111 -1) I % c I c -NATURAL GRASSLANDS (2.7 % SLOPE ) 0 .4 1 100 .0% 0 .41
100 .0 % 0.4 1
I , IN /HR B/(T C +D )"E 7 .69
I TYPE SF I ACRES I
A , ACRE S NAT U RAL GRASS LA NDS 28 ,632 0 .66
28 ,63 2 0 .66
Q ,CFS CIA 2.07
PROPO S ED
DRAINAG E AREA 3
TRAVEL V , FPS T IME
TYPE LF % Tab le 111 -2 SEC MIN
TC , MIN LANDSCAPED 37 1.4 % 1 .50 24 .6 7 0 .4 1
PAVEMENT 96 2 .3 % 3 .00 32 .00 0 .53
GUTTER FLOW 188 1.8 % 5 .00 37 .60 0 .63
10.00
I TYPE I C (Ta ble 111 -1) I % c . I
c -LAND S CAPED (3% SLOPE ) 0.62 18 .0% 0 .11
IMPERVIOUS (2 .5 % SLOPE ) 0.90 82 .0% 0 .74
100 .0% 0.85
I, IN/HR B/(TC+D )"E 7 .6 9
I TYPE SF I ACRES I
A, ACR ES LA N DSCAPED (3 % SLOPE ) 4 ,798 0 .11
IMPERVIOUS (2 .5 % SLOPE ) 21 ,855 0 .50
2 6 ,653 0 .61
Q ,CFS CIA 4 .00
10-YR STORM EVENT
ELMS ORTHODONTIST
CITY OF COLLEGE ST A TION
BRAZOS COUNTY, TEXAS
E;LMS ORTHODONTIST 12/9/05 1 :53 PM
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT:
10 YR STORM
EXISTING
TC , MIN
TYPE
NATURAL GRASSLAND
B D
80
DRAINAGE AREA 1
TRAVEL
LF %
96
I TYPE
c -NATURAL GRASSLANDS (3 .8 % SLOPE)
I, IN /HR B/(TC+D)"E
I TYPE
A , ACRES NATURAL GRASSLANDS
Q ,CFS CIA
PROPOSED
DRAINAGE AREA 1
TRAVEL
TYPE LF %
8.5
3.8%
TC, MIN LANDSCAPED 26 15.8%
c -
I, IN /HR
A , ACRES
Q,CFS
LANDSCAPED
I TYPE
LANDSCAPED (12 % SLOPE)
LANDSCAPED (4% SLOPE)
IMPERVIOUS (40 % SLOPE)
B/(TC+D)"E
I TYPE
LANDSCAPED (15 .8 % SLOPE)
LANDSCAPED (2 .7% SLOPE)
IMPERVIOUS (40% SLOPE)
CIA
132 2.7 %
E
0 .763
TIME
SEC MIN
38.40 0.64 -----10.00
IC (Tabl e 111 -1) I % C I
0.46 ___ 1 o_o_.0_% ___ _.;.o_.4-'-6
100 .0% 0.46
SF I
1,337
1,337
TIME
SEC
3 .71
44 .00
8.63
ACRES I
0.03
0 .03
0 .12
MIN
0 .06
0 .73
10.00
IC (Table 111 -1) I % C I
0 .85 22 .5% 0 .19
0 .60 67.5 % 0.40
0 .60 10 .0% 0 .06 ---10-0-.0-% ____ 0_.6_6
SF
1,241
3,723
552
5 ,516
8.63
ACRES I
0 .03
0 .09
0.01
0.13
0 .72
ELMS ORTHODO NTIST .. 12/9/05 1 :53 PM
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
10 YR STORM 80 8 .5 0 .763
EXISTING
DRAINAGE AREA 2
TRAVEL V ,FPS TIME
TYPE . LF % T able 111-2 SEC MIN
TC , MIN NATURAL GRASSLAND 235 2 .0 % 1.70 138.24 2.30
10.00
I TYPE IC (Table 111 -1) I % c I c -NATURAL GRASSLANDS (2.0% SLOPE ) 0 .38 100.0 % 0 .38
100.0 % 0 .38
I, IN /HR B/(TC+D)"E 8 .63
I TYPE SF I ACRES I
A , ACRES NATURAL GRASSLANDS 11 ,275 0 .26
11 ,275 0 .26
Q ,CFS CIA 0 .85
PROPOSED
DRAINAGE AREA 2
TRAVEL TIME
TYPE LF % SEC MIN
TC , MIN LANDSCAPED 189 1.9 % 94 .50 1.58
10 .00
I TYPE IC (Tab le 111-1) I % c I c -LA NDSCAPE D (16 % SLOPE ) 0 .85 59.5 % 0 .51
LANDSCAPED (3 % SLOPE) 0 .60 25 .5% 0 .15
.· IMPERVIOUS (40 % SLOPE ) 0 .60 15.0% 0 .09
100 .0% 0 .75
I , IN /HR B/(TC+D )"E 8 .63
I TYPE SF I ACRES I
A , ACRES LANDSCAPED (16 % SLOPE) 5 ,393 0 .12
LANDSCAPED (3 % SLOPE ) 2 ,311 0 .05
IMPERVIOUS (40 % SLOPE) 1,360 0.03
9 ,064 0.21
Q,CFS CIA 1 .35
ELMS ORTHODONTIST 12/9/05 1 :58 P M
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
10 YR STORM 80 8.5 0 .76 3
EXISTING
DRAINAGE AREA 3
TRAVEL V,FPS TIME
TYPE LF % Table 111-2 SEC MIN
TC , MIN NATURAL GRASSLAND 247 2 .7 % 2.40 102 .92 1.72
10.00
I TYPE IC (Table 111-1) I % c I c -NATURAL GRASSLANDS (2 .7% SLOPE) 0 .41 100 .0 % 0.41
100 .0 % 0.41
I, IN/HR B/(TC+D)"E 8 .63
I TYPE SF I ACRES I
A , ACRES NATURAL GRASSLANDS 28 ,632 0.66
28 ,632 0 .66
Q ,CFS CIA 2.33
PROPOSED
DRAINAGE AREA 3
TRAVEL V ,FPS TIME
TYPE LF % Tab le 111-2 SEC MIN
TC , MIN LANDSCAPED 37 1.4% 1 .50 24 .67 0 .41
PAVEMENT 96 2 .3 % 3.00 32 .00 0 .53
GUTTER FLOW 188 1 .8 % 5 .00 37 .60 0 .63
10.00
TYPE IC (Table 111-1) I % c I c -LANDSCAPED (3 % SLOPE) 0 .62 18.0% 0 .11
IMPERVIOUS (2 .5% SLOPE) 0.90 82.0 % 0 .74
100 .0 % 0 .85
I , IN /HR B/(TC+D)"E 8 .63
I TYPE SF I ACRES I
A , ACRES LANDSCAPED (3 % SLOPE) 4 ,798 0.11
IMPERVIOUS (2.5% SLOPE) 21 ,855 0 .50
26,653 0 .61
Q ,CFS CIA 4 .49
25 -YR STORM EVENT
ELMS ORTHODONTIST
CITY OF COLLEGE STATION
BRAZOS COUNTY, TEXAS
EL M S ORTHODONTIST 12 /9/05 1 :54 PM
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT:
25 YR STORM
EXISTING
TC , MIN
TYPE
NATURAL GRASSLAND
B D
89
DRAINAGE AREA 1
TRAVEL
LF %
96
I T YPE
c -NATURAL GRASSLANDS (3 .8% S LO PE )
I, IN /HR B/(TC+D)AE
TYPE
A, AC RES NATURAL GRASSLANDS
Q ,CFS CIA
P RO P OS E D
DRAINAGE AR EA 1
TRAVEL
TYPE LF %
8 .5
3 .8 %
TC , M IN LANDSCAPED
LANDSCAPED
26 15 .8 %
c -
I, IN /HR
I TYPE
LANDSCAPED (12 % SLOPE )
LANDSCAPED (4 % SLOPE)
IMPERVIOUS (40% SLOPE)
B/(TC+D)"E
I TYPE
A , ACRES LANDSCAPED (15 .8 % SLOPE)
LANDSCAPED (2 .7 % SLOPE)
IMPERVIOUS (40% SLOPE)
Q , CFS CIA
132 2 .7 %
E
0 .754
TIME
SEC MIN
38.40 0.64 -----10 .00
IC (Tab le 111 -1) I % C I
0.46 100 .0 % 0.46
-~~~~~~~-
V ,FPS
Table 111 -2
7 .00
3 .00
I C {Table 111-1) I
0.85
0 .60
0.60
100 . 0 % 0.46
9 .86
SF I ACRES I
1,337 0.03
1,337 0 .03
0 .14
TIME
SEC MIN
3 .71 0 .06
44 .00 0.73
10.00
% c I
22 .5 % 0 .19
67 .5% 0.40
10 .0% 0.06
100.0% 0 .66
9 .86
SF ACRES I
1,241 0.03
3,723 0 .09
552 0 .01
5 ,516 0 .13
0 .82
ELMS ORTHODONTIST 12/9/05 1 :54 PM
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
J
STORM EVENT: B D E
25 YR STORM 8 9 8 .5 0.754
I EXISTING
DRAINAGE AREA 2
TRAVE L V , FPS TIME
T YPE LF % Ta ble 111 -2 SEC MIN
T C , MIN NATURAL GRASSLAN D 235 2 .0% 1 .70 138 .24 2 .30
10.00
I TYPE IC (Tab le 111-1) I % c I c -NATURAL GRASSLANDS (2.0% SLOPE) 0 .38 100.0 % 0 .38
100.0 % 0 .38
I, IN /HR B/(TC+D)"E 9 .86
I TYPE SF I ACRES I
A , ACRES NATURAL GRASSLANDS 11 ,275 0 .26
11 ,275 0.26
Q ,CFS CIA 0 .97
PROPOSED
DRAINAGE AREA 2
TRAVEL TIME
TYPE LF % SEC MIN
TC , MI N LANDSCAPED 189 1 .9 % 94 .50 1.58
10.00
I TYPE IC (Table 111-1) I % c I
C , -LANDSCAPED (16 % SLOPE) 0 .85 59.5% 0 .5 1
LANDSCAPED (3 % SLOPE) 0 .60 25 .5% 0 .15
IMP ERVIOUS (40 % SLOPE) 0 .60 15 .0 % 0 .09
100.0 % 0 .75
I, IN/HR B/(TC+D)"E 9 .86
I TYPE SF I ACRES I
A , ACRES LANDSCAPED (16 % SLOPE) 5 ,393 0 .12
LANDSCAPED (3 % SLOPE) 2 ,311 0 .05
IMPERVIOUS (40 % SLOPE) 1 ,360 0 .03
9 ,064 0 .21
Q ,CFS CIA 1.54
ELMS ORTHODONTIST 12/9/05 1 :58 PM
I CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
I
STORM EVENT: B D E
25 YR STORM 89 8 .5 0 .754
I EXISTING
DRAINAGE AREA 3
TRAVEL V , FPS T IME
TYPE LF % T able 111-2) SEC MIN
TC, MIN NATURAL GRASSLAND 247 2 .7% 2.40 102.92 1.72
10.00
I TYPE IC (Table 111-1) I % c I c -NATURAL GRASSLANDS (2.7 % SLOPE ) 0.41 100 .0 % 0.41
100 .0% 0.41
I , IN /HR B/(TC+D)"E 9 .86
I TYPE SF I ACRES I
A, ACRES NATURAL GRASSLANDS 28 ,632 0.66
28 ,632 0 .66
Q ,CFS CIA 2 .66
PROPOSED
DRAINAGE AREA 3
TRAVEL V ,FPS TIME
TYPE LF % Table 111-2 SEC MIN
TC , MIN LANDSCAPED 37 1.4% 1 .50 24 .6 7 0 .41
PAVEMENT 96 2 .3 % 3 .00 32.00 0 .53
GUTTER FLOW 188 1.8% 5 .00 37.60 0 .63
10.00
I TYPE IC (Tab le 111-1) I % c I
C , -LANDSCAPED (3% SLOPE) 0 .62 18 .0% 0 .11
IMPERVIOUS (2.5 % SLOPE ) 0 .90 82 .0 % 0 :74
100 .0 % 0 .85
I, IN /HR B/(TC+D )"E 9 .86
I TYPE SF I ACRES I
A , ACRES LANDSCAPED (3% SLOPE) 4 ,798 0 .11
IMP ERVIOUS (2.5% SLOPE) 21 ,855 0 .50
26 ,653 0.61
Q ,CFS CIA 5 .13
100-YR STORM EVENT
ELMS ORTHODONTIST
CITY OF COLLEGE STATION
BRAZOS COUNTY, TEXAS
ELMS ORTHODONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
100 YR STORM 96 8 .0 0.7 3
EXISTING
DRAINAGE AREA 1
TRAVEL
TYPE LF %
TC , M IN NA T URAL GRASSLAND 96 3 .8%
I TYPE IC (Table 111-1) I
c -NATURAL GRASSLANDS (3 .8 % SLOPE ) 0.46
I, IN /HR B/(TC+D)"E
I TYPE
A , ACRES NATURAL GRASSLANDS
Q ,CFS CIA
PROPOSED
DRAINAGE AREA 1
TRAVEL
TYPE LF %
TC , MIN LANDSCAPED 26 15 .8 %
LANDSCAPED 132 2 .7%
I TYPE IC (Table 111 -1) I
c -LANDSCAPED (12 % SLOPE) 0 .85
LANDSCAPED (4 % SLOPE) 0.60
IMPERVIOUS (40% SLOPE ) 0 .60
I, IN /HR B/(TC+D)"E
I TYPE
A , ACRES LANDSCAPED (15 .8% SLOPE)
LANDSCAPED (2.7 % SLOPE)
IMPERVIOUS (40 % SLOPE)
Q ,CFS CIA
12/9/05 1 :55 PM
TIME
S EC MIN
38 .4 0 0 .64
10 .00
% c I
100.0% 0.46
100 .0% 0.46
11 .64
SF I ACRES I
1,337 0 .0 3
1,337 0.03
0.16
TIME
SEC MIN
3 .71 0 .06
44 .00 0 .73
10.00
% c I
22 .5 % 0 .19
67 .5 % 0.40
10 .0 % 0.06
100 .0 % 0 .66
11 .64
SF I ACRES I
1 ,241 0 .03
3,723 0 .09
552 0.01
5 ,516 0 .13
0 .97
ELMS ORTHODONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
100 YR STORM 96 8 .0 0 .73
EXISTING
DRAINAGE AREA 2
TRAVEL V,FPS
TYPE LF % Ta ble 111-2
TC , MI N NATURAL GRASSLAND 235 2.0 % 1.70
I TYPE IC (Tab le 111 -1) I
c -NATURAL GRASSLANDS (2 .0 % SLOPE ) 0 .38
I, IN /HR B/(TC+D)11 E
I TYPE
A , ACRES NATURAL GRASSLANDS
Q ,CFS CIA
PROPOSED
DRAINAGE AREA 2
TRAVEL
TYPE LF %
TC, MIN LANDSCAPED 189 1.9 %
I TYPE IC (Table 111 -1) I
c -LANDSCAPED (16 % SLOPE) 0 .85
LANDSCAPED (3 % SLOPE) 0.60
IMPERVIOUS (40 % SLOPE) 0 .60
I, IN /HR B/(TC+D)11 E
I TYPE
A , ACRES LANDSCAPED (16 % SLOPE)
LANDSCAPED (3 % SLOPE )
IMPERVIOUS (40 % SLOPE)
Q ,CFS CIA
12/9/05 1 :55 PM
T IME
SEC MIN
138.24 2 .30
10.00
% c I
100 .0 % 0 .38
100 .0 % 0 .38
11 .64
SF I ACRES I
11,275 0 .26
11,275 0.26
1.14
TIME
SEC MIN
94 .50 1.58
10.00
% c I
59.5 % 0 .51
25 .5% 0 .15
15 .0 % 0 .09
100 .0 % 0 .75
11 .64
SF I ACRES I
5 ,393 0 .12
2 ,311 0 .05
1,360 0 .03
9 ,064 0 .21
1 .81
ELMS ORTHODONTIST 12/9/05 1 :58 PM
f
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
l
STORM EVENT: B D E
100 YR STORM 96 8.0 0.73
I EXISTING
DRAINAGE AREA 3
TRAVEL V ,FP S TI ME
TYPE L F % (Table 11 1-2 SEC MIN
TC , MIN NATU RAL GRASSLAN D 247 2.7 % 2 .40 102 .92 1 .72
10.00
TYPE IC (T able 11 1-1 ) I % c I
C , -NATURAL GRASSLANDS (2 .7% SLOPE ) 0.41 100 .0 % 0.41
100.0 % 0.4 1
I, IN /HR B/(TC+D )"E 11 .64
I TYPE SF I ACRES I
A , ACRE S NATURAL GRASSLANDS 28 ,632 0 .66
28 ,63 2 0 .66
Q ,CFS CIA 3 .14
PROPOSED
DRAINAGE AREA 3
TRAVEL TIME
TYPE LF % SEC MIN
TC , MIN LANDSCAPED 37 1.4 % 24.67 0 .4 1
PAVEMENT 96 2.3 % 32 .00 0 .53
GUTTER FLOW 188 1 .8% 37 .60 0 .63
10.00
I TYPE I C (Ta ble 111 -1) I % c
C , -LANDSCAPED (3 % SLOPE) 0 .62 18 .0 % 0 .1 1
IMPERVIOUS (2 .5 % SLOPE) 0 .90 82 .0 % 0 .74
100 .0 % 0 .85
I, IN /HR B/(TC+D)"E 11 .64
I TYPE SF I ACRES I
A , ACRES LANDSCAPED (3% SLOPE) 4 ,798 0 .11
IMPERVIOUS (2.5 % SLOPE) 21 ,855 0 .50
26 ,653 0 .61
Q ,CFS CIA 6 .05
CERTIFICATION:
Drainage Report
Prepare d fhr:
ELMS ORTHODONTIST
City of College Station
Brazos County, Texas
PK Job No. 37105-291
Date :
December 12, 2005
Prepared by:
Pledger Kalkomey, Inc.
Consulting Engineers
7020 Coyote Run • Bryan , Texas 77808
979-731-8000 • 979-731-1500 (Fax)
www .pkcngincc ring .com
Brenham • B1:\'l111 • Rosenher~
I hereb y certify th at this report was prepared b y me (o r und er my
s upervi s io n) in accordance with th e pro v is ion s of th e C it y of Co ll ege
Sta tion Drainage Po li cy an d Des ign Standards for the owners thereof.
PURP OSE
Deve l opment of the sub ject p ro p e rty invol v e s t he addition of
buildings , si dewalks, d r i ve , and park ing spac es . The drainage
area affected b y the d eve l opment contains a p pro x ima te ly 0 . 94 7
ac r es of l and . Re f erence is made to the at ta c he d g r ading plan
(sheet 2 of 2, da t ed 1 2 /12 /05) d rawi ng . This repo r t d oc ume nt s
the e ngi n eering analysis of the excess runoff due to t he
developme n t .
METHOD OLOGY
·Using field surveying data the watershed affected by ·the
proposed development inside the property was delineated.
The Rational Method was used to compute the peak flow rates for
this study. The area (A) of each drainage area was obtained
from the topographical maps. Based on existing land patterns,
the weighted c factor for the area was determined . A velocity-
distance relationship was used to compute the time of
concentration (tc ) for the area with a minimum time of
concentration of ten ( 10) minutes. The rainfall intensity (I)
for the drainage area was d e termined using the intensity-
duration-frequency curves for the City of Col l ege Station
(Figure III-1, Drainage Policy and Design Standards).
The peak flow rate (Q) for the existing drainage area was
computed with the following formula:
Q = (C) (I) (A)
The procedure was then repeated for the developed conditions of
each of the watersheds. After development, the boundaries and
S:\2005137105-291 PAYNE-Elrnsl drainage reportldrain report-ELMS.doc
areas of the proposed wat e r sheds differ from that of the
existing watersheds due to the re-grading of the property .
For the drainage collection system , capac ity for the curb inle t
on Emera l d Plaza was c alculated using the weir equat i on
(Q = CL H1 ·5 ) wi th a depth of s i x i nches (6") and a lengt h of
fifteen feet (15') for the inle t opening . Capacity for the
grate inlets on the west side of the property was det.ermined
using the orifice equation (Q = CA(2GH)0 ·5 ) with a depth of
fifteen inches (15") and an area equa l to the open area of each
gra te .
RESULTS
The drainage area informati on and the calculations for the
existing and proposed condition s are attached.
The subject property is within the 10 0 -year flood plain of Bee
Creek Tributary A. Drainage Areas I and II each drain into an
existing TxDOT grate inlet on the western side of the property,
and Drainage Area III drains into the existing curb inlet
located on the south side of Emerald Plaza . This storm drain
then discharges directly into Bee Creek Tributary A . No
detention is proposed since this property is already submerged
and the increase in runoff from the proposed developmen t will
result in no significant change to the flood plain.
The changes in flow rates are as follo ws :
S:\2005137105-291 PAYNE-E lmsldrainage reportl drain report-ELMS .doc
DRAI NAGE AREA I
EX ISTI NG AREA= 1 ,337 SQUARE FEET
PROPOSED ARE A = 5 ,5 1 6 SQU AR E F EE T
S t o r m EXISTI NG PEAK
Even t FL OW RATE (cfs )
2 yr 0 .0 9
5 y r 0 .11
10 yr 0 .1 2
25 yr 0 .1 4
10 0 yr 0 .16
DRAINAGE AREA II
EXISTING ARE A = 11,2 75 SQUARE FEET
PROPOSED AREA = 9,064 SQUARE FEET
I
Storm I EXISTING PEA K
I -
Event FLO W RATE (cfs )
I
I
I
2 yr 0.62
---
5 yr 0 .7 6
1 0 yr 0 .85
25 yr 0 .9 7
1 00 yr 1.14
-----------
S:\2005\37105-291 PAYN E-E lms\dra inage report\dra in re port-EL MS .doc
..
P RO POS ED PE AK
FLO W RATE (c fs)
0 .5 3
0 .6 4
0.72
0.8 2
0 .97
PR OPOSED PEA K
FLO W RATE (cfs)
----
'
0.99 I
-· I 1. 20
1. 35 I ---------
1. 5 4
1. 81
------
DRAINAGE AREA III
EXIST I NG AREA= 28 ,63 2 SQU AR E FE ET
P ROPOSED AR EA = 26 ,653 SQ AR E FEET
Sto r m
Event
2 yr
5 y r
1 0 y r
2 5 yr
100 yr
EX I STING P~-=--K
FLOW RAT E (cfs)
1 .7 0
2 .0 7
2 .33
2 .66
3 .1 4
S:\2005137105-291 PAYNE-Elmsl drainage reportl dra in report-ELMS .doc
PROPOS ED PE.~K
FL OW RA TE (c fs)
3 .29
4 .00
4 .49
5 .1 3
6 .05
DRAWINGS
ELMS ORTHODONTIST
CITY OF COLLEGE STATION
BRAZOS COUNTY, TEXAS
2-YR STORM EVENT
ELMS ORTHODONTIST
CITY OF COLLEGE STATION
BRAZOS COUNTY, TEXAS
ELMS O RT HODO NTIS T 12/9 /05 1 :37 PM
CITY OF C O LL EGE STATION, BRAZOS C OUNTY, T EXAS
REFERENCE : COLLEGE STATION DRAINAGE POLIC Y AND DESIGN STANDARDS
STORM EVEN T : B D
2 YR STORM 6 5 8 .0
EXISTING
DRAI NAGE ARE A 1
TR AVEL
TYP E L F %
TC , MIN NATUR AL GRASSL AN D 96 3 .8 %
I TYPE
C.-NATURAL GR A SSLANDS (3 .8 % SLOPE )
I, IN /HR B/(TC+D )"E
I TYPE
A , ACRE S NATURAL GRASSLANDS
Q ,CFS CIA
PROPOSED
DRAINAGE AREA 1
TRAVEL
TYPE LF %
TC , MIN LANDSCAPE D 26 15.8 %
c -
I, IN /HR
A , ACRES
Q,CFS
LANDSCAPED
I TYPE
LA NDSCAPED (12 % SLOPE )
LANDSCAPED (4 % SLOPE)
IMPERVIOUS (40% SLOPE )
B/(TC+D)"E
I TYPE
LANDSCAPE D (15 .8 % SLOPE)
LANDSC AP E D (2 .7 % SL OPE)
IMPERVIOUS (40% SLOPE)
CIA
132 2 .7 %
E
0 .8 06
V ,FPS T IME
Table 111-2 S EC MIN
2 .50 3 8.40 0 .64
1000
I C (Tab le 111 -1 ) I % c
0 .46 100.0% 0.46
100.0 % 0.46
6 .33
SF ACRES I
1,337 0 .03
1,3 3 7 0 .03
0 .0 9
V ,FPS TIME
Tab le 111 -2 SEC MIN
7 .00 3 .71 0 .06
3 .00 44 .00 0 .73
10.00
I C (Tab le 111 -1) I % c
0 .85 22 .5 % 0.19
0 .60 67.5 % 0.40
0 .60 10 .0 % 0 .06
~~~~~~~~~
100.0 % 0 .66
SF
1 ,241
3 ,723
552
5 ,516
6 .33
ACRES I
0 .03
0 .09
0 .01
0 .13
0 .53
El-MS ORTH O DONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D
2 YR STORM 65
EXISTING
DRAINAGE AREA 2
TRAVEL
TYPE LF %
TC , M IN NATU RAL GRASSLAND 235
I TYPE
c -NATURAL GRASSLANDS (2 .0 % SLOPE )
I, IN /HR B/(TC+D)"E
I TYPE
A , ACRE S NATURAL GRASSLANDS
Q ,CFS CIA
PROPOSED
DRAINAG E AR EA 2
TRAVEL
TYPE LF %
TC , MIN LANDSCAPED 189
I TYPE
c -
8 .0
2 .0%
1.9%
E
0 .806
V ,FPS
Table 111-2
1.70
I C (Table 111 -1) I
0 .38
V ,FPS
Table 111-2
2 .00
I C (Table 111-1) I
0.85
0 .60
0 .60
12/9/05 1 :37 PM
TIME
SEC MIN
138 .24 2 .30
10.00
% c
100 .0% 0 .38
100 .0% 0 .38
6 .33
SF ACRES I
11 ,275 0 .26
11 ,275 0 .26
0 .62
TIME
SEC MIN
94 .50 1 .58
10 .00
% c
59 .5% 0 .51
25 .5% 0 .15
15 .0 % 0 .09
LANDSCAPED (16 % SLOPE)
LANDSCAPED (3 % SLOPE)
IMPERVIOUS (40 % SLOPE)
~~~~~~~~~
I, IN /HR B/(TC+D)"E
I TYPE
A , ACRES LANDSCAPED (16% SLOPE)
LANDSCAPED (3 % SLOPE )
IMPERVIOUS (40 % SLOPE)
Q , CFS CIA
100.0% 0 .75
6 .33
SF ACRES
5,393 0.12
2 ,311 0.05
1,360 0 .03
9 ,064 0 .21
0 .99
ELMS ORTHODONTIST 12/9/05 1 :50 PM
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: 8 D E
2 YR STORM 6 5 8 .0 0 .806
EXISTING
DRAINAGE AREA 3
TRAVE L V ,F PS TIM E
TYPE LF % T abl e 111 -2 SEC MI N
TC , MIN NATU RA L GRASS LA ND 247 2 .7 % 2 .40 102 .92 1 .72
10.00
TYPE I C (Table 111 -1) I % c
C , -NATURAL GRASSLANDS (2 .7% SLOPE ) 0.41 100 .0 % 0.41
100 .0 % 0.4 1
I, IN/HR B/(TC+D)"E 6 .33
I TYPE SF I ACRES I
A , ACRES NATURAL GRASSLANDS 28 ,632 0 .66
28 ,632 0.66
Q ,CFS CIA 1 .70
PROPOSED
DRAINAGE AREA 3
TRAVEL V ,FPS TIME
TYPE LF % Tab le 111-2 SEC MIN
TC , MIN LANDSCAPED 37 1.4% 1 .50 24 .67 0.41
PAVEMENT 96 2 .3% 3 .00 32 .00 0 .53
GUTTER FLOW 188 1.8 % 5 .00 37 .60 0 .63
10.00
TYPE I C (Table 111-1) I % c
c -LANDSCAPED (3 % SLOPE) 0 .62 18 .0 % 0 .11
IMPERVIOUS (2 .5 % SLOPE) 0.90 82 .0 % 0 .74
100 .0 % 0 .85
I, IN /HR 8 /(TC+D )"E 6 .33
I TYPE SF ACRES
A , ACRES LANDSCAPED (3 % SLOPE) 4 ,798 0 .11
IMPERVIOUS (2 .5 % SLOPE) 21 ,855 0 .50
26 ,653 0 .61
Q ,CFS CIA 3.29
----------------"
5-YR STORM EVENT
ELMS ORTHODONTIST
CITY OF COLLEGE STATION
BRAZOS COUNTY, TEXAS
ELMS ORTHODONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
5YR STORM 76 8 .5 0 .785
EXISTING
DRAINAGE AREA 1
TRAVEL V, FPS
TYPE LF % Table 111-2
TC, MI N NATURAL GRASSLAN D 96 3.8% 2 .50
I TYPE IC (Table 111-1) I
c -NATURAL GRASSLANDS (3 .8% SLOPE ) 0.46
I, IN /HR B/(TC+D)"E
I TYPE
A, ACRES NATURAL GRASSLANDS
Q ,CFS CIA
PROPOSED
DRAINAGE AREA 1
TRAVEL
TYPE LF %
TC , MIN LANDSCAPED 26 15.8%
LANDSCAPED 132 2 .7 %
I TYPE I C (Table 111 -1) I
c -LANDSCAPED (12 % SLOPE) 0 .85
LANDSCAPED (4 % SLOPE) 0 .60
IMPERVIOUS (40% SLOPE) 0 .60
I, IN /HR B/(TC+D)"E
I TYPE
A , ACRES LANDSCAPED (15.8 % SLOPE )
LANDSCAPED (2 .7 % SLOPE)
IMPERVIOUS (40 % SLOPE)
Q ,CFS CIA
12/9/05 1 :51 PM
TIME
SEC MIN
38.40 0 .64
10.00
% c I
100 .0% 0.46
100 .0 % 0.46
7 .69
SF I ACRES I
1 ,337 0 .03
1 ,337 0 .03
0 .11
TIME
SEC MIN
3 .71 0 .06
44 .00 0.73
10.00
% c I
22 .5% 0 .19
67 .5% 0.40
10.0% 0.06
100.0% 0.66
7 .69
SF ACRES I
1,241 0 .03
3 ,723 0 .09
552 0.01
5 ,516 0 .13
0 .64
ELMS O RTHODONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: 8 D
5 YR STORM 76
EXISTING
DRAINAGE AREA 2
TRAVEL
TYPE LF %
T C , MIN NATURAL GRASSLAND 235
I TYPE
c -NATURAL GRASSLANDS (2 .0% SLOPE )
I, IN/HR 8 /(TC+D )"E
I TYPE
A, ACRES NATURAL GRASSLANDS
Q ,CFS CIA
PROP OSED
DRAINAGE A REA 2
TC , MIN
c -
I, IN /HR
TYPE
LANDSCAPED
I TYPE
LANDSCAPED (16 % SLOPE)
LANDSCAPED (3 % SLOPE)
IMPERVIOUS (40 % SLOPE)
8/(TC+D)"E
LF
I TYPE
A , ACRES LANDSCAPED (16 % SLOPE)
LANDSCAPED (3% SLOPE)
IMPERVIOUS (40 % SLOPE)
Q , CFS CIA
TRAVEL
%
189
8 .5
2 .0 %
1.9 %
E
0 .785
V ,FPS
Ta bl e 111 -2
1.70
I C (Table 111-1) I
0 .38
V, FPS
Table 111-2
2 .00
I C (Table 111-1) I
0 .85
0.60
0 .60
12 /9/05 1 :51 PM
T IME
SEC MIN
138 .24 2 .30
10.00
% c I
100 .0 % 0 .38
100.0 % 0 .38
7 .69
SF I ACRES I
11 ,275 0 .26
11 ,275 0 .26
0 .76
TIME
SEC MIN
94 .50 1.58
10.00
% c I
59 .5% 0 .51
25 .5 % 0 .15
15 .0 % 0 .09
100 .0 % 0 .75
7 .69
SF ACRES I
5 ,393 0 .12
2 ,3 11 0 .05
1,360 0 .03
9 ,064 0 .21
1.20
ELMS ORTHO DONTIS T
CIT Y OF CO LL EG E STATI ON, BRAZ OS COUNTY, TE XAS
REFERENCE : COLLEGE STAT ION DRAINAG E POLICY AND DES IGN STAND A RDS
STORM EVENT: B D E
5 YR STORM 76 8 .5 0.785
EXISTING
D RAINAGE AREA 3
TRAVEL
TYPE LF %
TC , MIN NATU RA L G RA S SLAND 247 2 .7 %
I TYPE I C (T able 111-1) I
c -NATURAL GRASSLANDS (2 .7% SLOP E) 0 .41
I, IN /HR B/(TC+D)"E
I TYPE
A , A C RE S NATURAL GRASSLANDS
Q ,CFS C IA
PROPOSED
DRAIN A G E AREA 3
TRAVEL V ,FPS
TYPE LF % T able 111 -2
TC , MI N LA NDSCAP ED 37 1.4% 1 .50
. PAVEMENT 96 2 .3 % 3 .00
GUTTER FLOW 188 1 .8 % 5 .00
I TYPE IC (Table 111 -1) I
c -LANDSCAPED (3 % SLOPE) 0 .62
IMPERVIOUS (2 .5 % SLOPE) 0 .90
I, IN/HR B/(TC+D)"E
I TYPE
A , ACRES LANDSCAP ED (3 % SLOPE)
IMP E RV IOUS (2 .5 % SLOPE)
Q ,CFS CIA
12/9/05 1 :58 PM
TI ME
SEC MIN
102 .92 1.72
10.00
% c I
100 .0% 0 .41
100 .0% 0.4 1
7 .69
SF I ACRES I
28 ,632 0 .66
28,63 2 0.66
2 .07
T IME
SEC MIN
24 .67 0.4 1
32.00 0 .53
37 .60 0 .63
10.00
% c I
18 .0% 0.1 1
82 .0 % 0 .74
100.0% 0 .85
7 .69
SF I ACRES
4 ,798 0 .11
2 1,85 5 0 .50
26 ,653 0 .61
4 .00
10-YR STORM EVENT
ELMS ORTHODONTIST
CITY OF COLLEGE STATION
BRAZOS COUNTY, TEXAS
ELMS ORTHODON TI ST
CITY OF COL LE GE STATI ON, BRAZ O S CO UNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DES IGN STANDARDS
STORM EVENT:
10 YR STORM
EXISTING
TC , MIN
TYPE
NAT URAL GRASSLAND
B D E
80 8.5 0 .763
DRAINAGE AREA 1
TRAVEL V, FPS
LF % Table 111-2
96 3.8 % 2.50
I . TYPE I C (Table 111 -1) I
c -NATURAL GRASSLANDS (3 .8% SLOPE)
I, IN/HR B/(TC+D)11 E
I TYPE
A , ACRES NATURAL GRASSLANDS
Q, CFS CIA
PROPOSED
DRAINAGE AREA 1
TC , MIN
c -
I, IN /HR
A , A CRES
Q ,CFS
TYPE
LANDSCAPED
LANDSCAPED
I TYPE
LANDSCAPED (12 % SLOPE)
LANDSCAPED (4 % SLOPE)
IMPERVIOUS (40 % SLOPE)
B/(TC+D)11 E
LANDSC A PE D (15 .8% SLOPE)
LANDSCAPED (2 .7% SLOPE)
IMPERVIOUS (40 % SLOPE )
C IA
TRAVEL
LF %
26 15 .8%
132 2 .7%
TYPE
V ,FP S
Table 111-2
7 .00
3.00
I C (Table 111-1) I
0 .85
0 .60
0 .60
I
12/9/05 1 :53 PM
T IME
SEC MIN
38.40 0 .64
10.00
% c I
100.0% 0.46
100 .0% 0.46
8 .63
SF I ACRES I
1,337 0 .03
1,337 0 .03
0 .12
TIME
SEC MIN
3.71 0 .06
44 .00 0 .73 -----
%
22.5 %
67 .5%
10.0 %
100 .0%
SF I
1,24 1
3,723
552
5 ,516
10.00
c I
0 .19
0.40
0 .06
0 .66
8.63
ACRES I
0 .03
0 .09
0 .01
0 .13
0 .72
ELMS ORTHODONTIST
CITY OF COLLEGE STATION , BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
10 YR STORM 80 8.5 0 .763
EXISTING
DRAINAGE AREA 2
TRAVEL V ,FPS
TYPE LF % Table 111 -2
TC , MIN NATURAL GRASSLAND 235 2.0% 1.70
I TYPE IC (Table 111 -1) I
C, -NATURAL GRASSLANDS (2 .0 % SLOPE) 0 .38
I, IN /HR B/(TC+D)"E
I TYPE
A, ACRES NATURAL GRASSLANDS
Q ,CFS CIA
PROPOSED
DRAINAGE AREA 2
TRAVEL
TYPE LF %
TC, MIN LANDSCAPED 189 1.9%
TYPE IC (Table 111-1) I
C , -LANDSCAPED (16 % SLOPE) 0 .85
LANDSCAPED (3 % SLOPE) 0 .60
IMPERVIOUS (40 % SLOPE) 0 .60
I, IN /HR B/(TC+D)"E
I TYPE
A , ACRES LANDSCAPED (16 % SLOPE)
LANDSCAPED (3 % SLOPE)
IMPERVIOUS (40 % SLOPE)
Q,CFS CIA
12/9 /05 1 :53 P M
TIME
SEC MIN
138 .24 2 .30
10.00
% c I
100.0% 0 .38
100 .0 % 0 .38
8.63
SF I ACRES I
11,275 0.26
11,275 0 .26
0.85
TIME
SEC MIN
94 .50 1.58
10.00
% c I
59.5 % 0 .51
25.5 % 0 .15
15 .0 % 0 .09
100 .0 % 0 .75
8 .63
SF I ACRES
5,393 0.12
2 ,311 0 .05
1,360 0 .03
9 ,064 0.21
1.35
ELMS ORTHODONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
10 YR STORM 80 8.5 0 .763
EXISTING
DRAINAGE AREA 3
TRAVEL V , FPS
TYPE LF % Table 111-2
TC , MIN NATURAL GRASSLA ND 247 2 .7% 2.40
I TYPE IC (Tab le 111-1) I
c -NATURAL GRASSLANDS (2 .7% SLOPE ) 0.41
I, IN /HR B/(TC+D )"E ·
I TYPE
A , ACRE S ~ NATURAL GRASSLA NDS
Q ,CFS CIA
PROPOSED
DRAINAGE AREA 3
TRAVEL V,FPS
TYPE LF % Ta ble 111 -2
TC , MIN LANDSCAPED 37 1.4 % 1.50
PAVEMENT 96 2 .3% 3 .00
GUTTER FLOW 188 1.8 % 5 .00
I TYPE IC (Tab le 111-1) I
c -LANDSCAPED (3 % SLOPE) 0.62
IMP ERVIOUS (2.5 % SLOPE) 0 .90
I, IN /HR B/(TC+D)"E
I TYPE
A , ACRES LANDSCAPED (3 % SLOPE )
IMPERVIOUS (2 .5 % SLOPE)
Q ,CFS CIA
12 /9/05 1 :58 PM
TIME
SEC MIN
102.92 1 .72
10.00
% c I
100.0% 0.41
100.0 % 0.41
8 .63
SF I ACRES I
28 ,632 0 .66
28 ,632 0 .66
2 .33
TIME
SEC MIN
24 .67 0 .41
32 .00 0 .53
37 .60 0 .63
10.00
% c
18 .0 % 0 .11
82 .0% 0 .74
100 .0 % 0 .85
8 .63
SF I ACRES I
4,798 0 .11
21 ,855 0 .50
26 ,653 0 .61
4.49
25-YR STORM EVENT
ELMS ORTHODONTIST
CITY OF COLLEGE ST A TION
BRAZOS COUNTY, TEXAS
ELMS ORTHODONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT:
25 YR STORM
EXISTING
TC , MIN
TYPE
NATU RAL GRASSLAND
B D E
89 8 .5 0 .7 54
DRAINAGE AREA 1
T RAVE L V ,FPS
LF % Ta ble 111-2
96 3 .8 % 2 .5 0
12 /9/05 1 :54 PM
T IME
SEC MIN
38.40 0 .64
10 .00
I TYPE IC (Ta ble 111-1) I % C I
c -NATURAL GRASS LANDS (3 .8 % S LOP E)
I, IN/HR B/(TC +D)11 E
TYPE
A , A CRES NATURAL GRASSLANDS
Q ,CF S CIA
PR OP OS ED
D RAI NAG E AR EA 1
TC , MIN
c -
I, IN /HR
TYPE
LANDSCAPED
LANDSCAPED
I TYPE
LANDSCAPED (1 2 % SLOPE )
LANDSCAPED (4 % SLOPE )
IMPERVIOUS (40 % SLOPE )
B/(T C+D )11 E
TRAVEL
LF %
26 15 .8 %
13 2 2 .7%
I TYPE
A , ACRES LANDSCAPED (15 .8 % SLOPE )
LANDSCAPED (2 .7% SLOPE )
IMPERVIOUS (40 % SLOPE)
Q , CFS CIA
0 .46 100 .0 % 0 .46
V ,FPS
Tab le 111-2
7.00
3 .0 0
~~~~~~~~-
100. 0 % 0 .46
9 .86
SF I ACRES I
1,337 0 .03
1,337 0 .03
0 .14
TIME
SEC MIN
3 .7 1 0 .06
44.00 0 .73
10.00
IC (Ta ble 111 -1) I % c I
0 .8 5
0 .60
0 .60
22.5% 0 .19
6 7.5% 0 .4 0
10 .0 % 0 .06
~~~~~~~~-
100 .0 % 0 .66
9 .86
SF I ACRES I
1,241 0 .03
3 ,723 0 .09
55 2 0 .0 1
5 ,516 0 .13
0 .82
ELM S ORTHODONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, T EXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
25 YR STORM 89 8.5 0 .754
EXISTING
DRAINAGE AREA 2
TRAVEL V ,FPS
T YP E LF % Ta ble 111-2
TC , MIN NA T URAL GRASS LA ND 235 2 .0 % 1.70
I TYPE IC (T able 11 1-1) I
c -NATURAL GRASSLANDS (2 .0 % SLOPE) 0 .38
I, IN /HR B/(TC+D )"E
I TYPE
A , ACR ES NATURAL GRASS LA NDS
Q ,CFS CIA
PROPOSED
DRAINAG E AREA 2
TRAVEL
TYPE LF %
TC , MIN LANDSCAPED 189 1.9 %
I TYPE I C (Tab le 111-1) I
C , -LANDSCAPED (16 % SLOPE) 0 .85
LANDSCAPED (3 % SLOPE) 0 .6 0
IMPERVIOUS (40 % SLOPE) 0 .6 0
I, IN /HR B/(TC+D)"E
I TYPE
A , ACRES LANDSCAPED (16 % SLOPE )
LANDSCAPED (3 % SLOPE)
IMPERVIOUS (40% SLOPE)
Q ,CFS CIA
12/9/05 1 :54 PM
TIME
SEC MIN
138 .24 2.30
10.00
% c I
100.0% 0 .38
100 .0 % 0 .38
. 9 .8 6
SF I ACRES I
11,275 0.26
11 ,2 75 0 .2 6
0 .97
TIME
SEC MIN
94 .50 1.58
10.0 0
% c I
59 .5 % 0 .51
25 .5 % 0 .1 5
15 .0 % 0 .09
100 .0 % 0 .75
9 .86
SF I ACRES I
5 ,393 0 .12
2 ,31 1 0 .05
1 ,3 6 0 0 .03
9 ,064 0 .2 1
1.54
ELMS ORTHODONTIST 12 /9/05 1 :58 PM
CITY OF COLLEGE STAT ION , BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
25YR STORM 89 8 .5 0 .754
EXISTING
DRAINAGE AREA 3
TRAVEL V, FPS TIME
TYPE LF % T ab le 111-2 SEC MIN
TC , MIN NATU RAL GRASSLAND 247 2 .7 % 2.40 102 .92 1.72
10.00
I TYPE IC (Ta ble 111 -1) I % c
c -NATURAL GRASSLAND S (2 .7% SLOPE ) 0 .41 100 .0 % 0 .41
100 .0 % 0 .41
I, IN /HR B/(TC +D)"E 9.8 6
I TYPE SF I ACRES I
A , ACRE S NATURAL GRASS LA NDS 28 ,6 32 0 .66
2 8 ,632 0 .66
Q ,CFS CIA 2 .66
PROPO S ED
DRAINAG E AR EA 3
TRAVEL TIME
TYPE LF % SEC MI N
TC , MI N LANDSCAPED 37 1.4 % 24 .6 7 0 .41
PAVEMENT 96 2 .3 % 32 .00 0 .53
GUTTER FLOW 188 1.8 % 5 .00 37 .60 0 .63
10.00
I TYPE IC (Ta ble 111 -1) I % c I c -LANDSCAPED(3% SLOPE ) 0 .62 18 .0% 0 .11
IMPERVIOUS (2 .5 % SLOPE ) 0 .90 82 .0 % 0 .74
100 .0% 0 .8 5
I , IN /HR B/(TC+D)"E 9 .86
I TYPE SF I ACRES
A , ACR ES LANDSCAPED (3% SLOPE ) 4 ,798 0 .11
IMPERVIOUS (2 .5% SLOPE ) 21 ,855 0 .50
26 ,65 3 0.61
Q ,CFS CIA 5 .13
100-YR STORM EVENT
ELMS ORTHODONTIST
CITY OF COLLEGE ST A TION
BRAZOS COUNTY, TEXAS
ELMS ORTHODONTIST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE : COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
100 YR STORM 96 8 .0 0.73
EXISTING
DRAINAGE AREA 1
TRAVEL V , FPS
TYP E LF % Table 11 1-2
TC , MIN NATURAL GRASSLAND 96 3 .8 % 2 .50
TYPE IC (Tab le 11 1-1) I
c -NATURAL GRASSLANDS (3 .8 % SLOPE ) 0.46
I, IN/HR B/(TC+D )AE
I TYPE
A , ACRES NATURAL GRASSLANDS
Q ,CFS CIA
PROPOSED
DRAINAGE AREA 1
TRAVEL
TYPE LF %
TC , MIN LANDSCAPED 26 15 .8%
LANDSCAPED 132 2.7 %
I TYPE IC (Tab le 111-1) I
c -LANDSCAPED (12 % SLOPE ) 0 .85
LANDSCAPED (4 % SLOPE) 0 .60
IMPERVIOUS (40 % SLOPE ) 0 .60
I, IN/HR B/(TC+D)AE
I TYPE
A , ACRES LANDSCAPED (15 .8 % SLOPE )
LANDSCAPED (2 .7 % SLOPE)
IMPERVIOUS (40% SLOPE)
Q ,CFS CIA
12 /9/05 1 :55 PM
TI ME
SEC MIN
38.40 0 .64
10.00
% c I
100 .0 % 0 .4 6
100 .0 % 0 .46
11.64
SF I ACRES I
1 ,337 0 .03
1 ,337 0 .03
0 .16
TIME
SEC MIN
3 .71 0 .06
44 .00 0 .73
10.00
% c I
22 .5% 0 .19
67 .5% 0.40
10.0 % . 0 .06
100 .0 % 0 .66
11 .64
SF I ACRES I
1 ,241 0 .03
3 ,723 0 .09
552 0 .01
5 ,5 16 0 .13
0 .97
ELMS ORTHODON T IST
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: 8 D
100 YR STORM 96
EXISTING
TC , MIN
I c -
I, IN/HR
I
A , ACRES
Q ,CFS
PROPOSED
TC , MIN
c -
DRAINAGE AREA 2
TRAVEL
TYPE LF %
NATURAL GRASSLAND 235
TYPE
NATURAL GRASSLANDS (2 .0 % SLOPE )
B/(TC+D )"E
TYPE
NATURAL GRASSLANDS
CIA
DRAINAG E AREA 2
TYPE
LANDSCAPED
TYPE
LANDSCAPED (16 % SLOPE)
LANDSCAPED (3% SLOPE)
IMPERVIOUS (40% SLOPE)
TRAVEL
LF %
189
8 .0
2 .0 %
1.9 %
E
0 .73
V, FPS
Tabl e 11 1-2)
1.70
IC (Table 111 -1 ) I
0 .38
V,FPS
Table 111-2
2 .00
I C (Table 111-1) I
0 .85
0 .60
0 .60
12/9/05 1 :55 PM
TIME
SE C MIN
13 8 .2 4 2 .30 -----10.00
% c I
100 .0 % 0.38
100 .0 % 0.38
11 .64
SF ACRES I
11 ,275 0 .26
11,275 0 .26
1.14
TIME
SEC MIN
94 .50 1.58
10.00
% c I
59 .5% 0 .51
25 .5 % 0 .15
15 .0 % 0 .09 ---------
I, IN/HR B/(TC+D)"E
I TYPE
A, ACRES LANDSCAPED (16 % SLOPE)
LANDSCAPED (3% SLOPE)
IMPERVIOUS (40 % SLOPE)
Q, CFS CIA
100.0%
SF
5 ,393
2 ,311
1,360
9 ,064
0.75
11 .64
I ACRES I
0 .12
0 .05
0.03
0.21
1.81
ELMS ORTHODONTIST 12/9 /05 1 :58 PM
CITY OF COLLEGE STATION, BRAZOS COUNTY, TEXAS
REFERENCE: COLLEGE STATION DRAINAGE POLICY AND DESIGN STANDARDS
STORM EVENT: B D E
100 YR STORM 96 8 .0 0 .7 3
EXISTING
DRAINAGE AREA 3
TRAVEL V , FPS TIME
TYPE LF % Tab le 111-2 SEC MIN
TC , MI N NATURAL GRASSLAND 247 2 .7 % 2.40 102 .9 2 1.72
10.00
I TYPE IC (Tab le 111-1) I % c I c -NATURAL GRASSLANDS (2 .7 % SLOPE ) 0.41 100.0 % 0.41
100.0 % 0.4 1
I, IN /HR B/(TC+D )"E 11 .64
I TYPE SF I ACRES I
A , ACRES NATURAL GRASSLANDS 28,632 0 .66
28 ,632 0 .66
Q,CFS CIA 3 .14
PROPOSED
DRAINAGE AREA 3
TRAVEL V ,FPS TIME
TYPE LF % Table 111-2 SEC MIN
TC , MIN LANDSCAPED 37 1.4% 1.50 24.67 0.41
PAVEMENT 96 2 .3 % 3 .00 32 .00 0 .53
GUTTER FLOW 188 1.8 % 5 .00 37 .60 0 .63
10.00
I TYPE IC (Tab le 111-1) I % c I c -LANDSCAPED (3 % SLOPE) 0 .62 18 .0 % 0 .11
IMPERVIOUS (2 .5 %. SLOPE ) 0 .90 82 .0 % 0 .74
100.0% 0.85
I, IN /HR B/(TC+D)"E 11 .64
I TYPE SF I ACRES I
A , ACRES LANDSCAPED (3 % SLOPE) 4 ,798 0 .11
IMPERVIOUS (2 .5 % SLOPE) 21 ,855 0 .50
26 ,653 0.61
Q ,CFS CIA 6 .05