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HESTER ENGINEERING COMPANY
7 607 Eastmar k Dr ive Suite 250
CO LLEGE STAT ION , TEXAS 77840
PHONE (409) 693-1100 FAX (409) 693 -1075
rn CS.~t~-
WE ARE SENDING YOU "'eJ Attached D Under separate cover via ------~,,C..---the following items:
COPIES
D Shop drawings
D Copy of letter
DATE
D Prints
D Change order
NO. I
D Plans D Samples D Specifications
I r--.. DESCRIPTION
I llli,-6.. {J 1 ~:I ~ l1Lnr1A~h
THESE ARE TRANSMITIED as checked below:
D For approv al
D For your use
D As request ed
u
D Approved as submitted
D Approved as noted
D Returned for corrections
()
D Resubm it ____ copies for approval
D Submit ____ copies for distr ibution
D Return ___ corrected prints
'--QI For revie w and comment D --------------------------
D FOR BIDS DUE ___________ 19 __ _ D PRINTS RET URNED AFTER LOAN TO US
REMARKS ___________________________________ '_· _______ _
~·
c~
COPYTO _____________________ -r '"'-( P.E.
--ti
WATERLINE FLOW -ANALYSIS
1)J~~{e
r~~
COLLEGE ST A TION
LIBRARY
(;\\~ 'tY"~ F.M. 2818
COLLEGE STATION, BRAZOS COUNTY,
TEXAS
OCTOBER, 1996
Submitted By:
Michael G. Hester. P.E.
Hester Engineering Company
7607 Eastmark Drive, Suite 253-8
College Station, TX 7~40
( 409) 693-1100 fx:( 409)693-1075
HESTER ENGINEERING COMPANY
CIVIL ENGINEERING SERVICES
7607 EASTMARK DRIVE, SUITE 253-8
COLLEGE STATION, TEXA!> /7840
( 409)693-1100 fx:( 409)693-1075
October 28, 1996
Ms. Veronica Morgan, P.E., Assistant City Engineer
College Station Engineering Division
1101 Texas Avenue
College Station, TX 77842
Re: COLLEGE STATION LIBRARY
Waterline Flow Analysis
Dear Veronica,
Hester Engineering Company has been hired to prepare Site
Engineering plans for the proposed College Station Library on
F.M. 2818. Please find attached a Waterline Flow Analysis for
your review.
I have determined the fire flow requirements from the
formula the College Station Fire Department provided and
discussed the site with Fire Marshall John Meece. With a fire
flow of 1250 gpm the analysis reveals that the residual
pressure and velocities stay within acceptable limits.
At your earliest convenience please review the report and
contact me with any additional flow conditions or questions .
. tk
xc: Bret Mccully, Assistant City Engineer
X-12 11 WArea1~
X-f'l.OWOff
22.?" ~NP
22.?· ~w
'
fra:; DePmMeNf SWlifZf Cat-UC110N ro ~ L..OCAreP ~R Fra:: SPRl~f;R 5Y5tt:M
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I't.1-PINU
16?64 5.f .
Jl20
0
ror.AJ... Fli<e Fww ro 51re RE:ou 11<eMeNf5:
fll<e fl-OW -18'*-C*"(A"O.?)
I I
f ~ H'r1/RfNf
\
\
\
_,COllE:Llf 5f Af ~ON l H3RARY
WAreR 5Y5re M ANAl Y515
OCfOB C:RJ i996 -18 *"C*"( 2?CXJO 5 .f ."0 .?) Ll-11 Mi\~ PE:Vf;L..Ol'Me Nf
PReP N(t;t? l?Y:
Michael C1. Hester, P.e.
Hf'.;5-n:R f;NC11Nf;f;RINC1 COMPANY
1601 f;A5fMARK !?RIVE:, 5Uln: 2?5-1?
ca1...eae 5f A110N , -rx 11 B40
( 409) 695-1100 fx.:( 409) 695 -1 01?
-18 *"0 .8 *"1 ?8
-27:71 CP M
L..OW fll<e HAZflRt7 -!7 0 7.:
-2211 CP M ,_._ 050 -11 ~8 CiPM
E:XP051.Ji:f PRGreC110N a 10 7.
-11~8 ,_._ 1.10 -12!72 CiPM
ROLNt? fO 2!70 CFM -12!70 CiPM.
**********+~k***********************************
S U M M A R Y 0 F 0 R I G I N A L DAT A
************************************************
CyberNet Version 2.18. Copyright 1991,92 Haestad Methods Inc.
Run Description: Basic Network
Drawing: CSL-H20
PIPE L I ·N E DAT A
STATUS CODE: XX -CLOSED PIPE
CV -CHECK VALVE
BN -BOUNDARY NODE
RV -REGULATING VALVE
PU -PUMP LINE
PIPE
NUMBER
70-BN
80
90
100
NODE NOS.
#1 #2
0
100
110
110
100
110
120
130
J U N C T I 0 N N 0 D E
JUNCTION
NUMBER
100-1
110-1
120-1
130-1
JUNCTION
TITLE
FH NO. 1
TEE
FH NO . 2
BUILDING
LENGTH
(ft)
215.0
218.0
330.0
150.0
DAT A
EXTERNAL
DEMAND
(gpm)
0.00
0.00
800.00
450.00
DIAMETER
(in)
8.0
8.0
8.0
6.0
ROUGHNESS
COEFF.
150.00
150.00
150.00
150 .00
JUNCTION
MINOR LOSS
COEFF.
3.20
1.50
2 .10
3.00
ELEVATION CONNECTING PIPES
(ft)
276.00
275 .00
273.00
276.00
70
80
90
100
80
90 100
BND-HGL
(ft)
515.70
S I M U L A T I 0 N D E S C R I P T I 0 N
CyberNet Version 2.18. Copyright 1991,92 Haestad Methods Inc.
Run Description: Basic Network
Drawing: CSL-H20
P I P E L I N E R E S U L T S
STATUS CODE: BN -BOUNDARY NODE PU -PUMP LINE XX -CLOSED PIPE
CV -CHECK VALVE RV -REGULATING VALVE TK -STORAGE TANK
PIPE
NUMBER
70-BN
80
90
100
NODE NOS.
#1 #2
0
100
110
110
100
110
120
130
FLOWRATE
(gpm)
1250.00
1250.00
800.00
450.00
HEAD
LOSS
(ft)
4.56
4.62
3.06
1. 94
J U N C T I 0 N N 0 D E R E S U L T S
JUNCTION
NUMBER
JUNCTION
TITLE
100-1 FH NO. 1
110-1 TEE
120-1 FH NO. 2
130-1 BUILDING
EXTERNAL
DEMAND
(gpm)
0.00
0.00
800.00
450.00
HYDRAULIC
GRADE
(ft)
507.99
501.88
497.97
498 .73
PUMP
HEAD
(ft)
MINOR
LOSS
(ft)
LINE
VELO.
(ft/s)
0.00
0.00
0.00
0.00
JUNCTION
ELEVATION
(ft)
276.00
275.00
273.00
276.00
3.16
1.48
0.85
1.21
7.98
7.98
5.11
5.11
PRESSURE
HEAD
(ft)
231. 99
226.88
224.97
222.73
MAXIMUM AND M I N I M U M V A L U E S
P R E S S U R E S
JUNCTION
NUMBER
100
110
MAXIMUM
PRESSURES
(psi)
100.53
98.32
JUNCTION
NUMBER
130
120
MINIMUM
PRESSURES
(psi)
96 .51
97.49
SUMMARY 0 F I N F L 0 W S AND 0 U T F L 0 W S
(+) INFLOWS INTO THE SYSTEM FROM BOUNDARY NODES
(-) OUTFLOWS FROM THE SYSTEM INTO BOUNDARY NODES
PIPE
NUMBER
FLOWRATE
(gpm)
HL/
1000
(ft/ft)
21.19
21.19
9.27
12.97
JUNCTION
PRESSURE
(psi)
100.53
98.32
97.49
96.51
--------------------
70 1250.00
NET SYSTEf.: INFLOW = 1250.00
NET SYSTEM OUTFLOW = 0.00
NET SYST'SM DEMAND = 1250 .00
**** CYBERNET SIMULATION COMPLETED ****
DATE: 10/28/1996
TIME: 18:19:07
1,;ULL ~l'A .t'llti LI T L
Flow Test Report
Date L()=/{q-£~ Time ;l :OO A.M@
r..-.~~b~r~ t!kC lfo~Hd.'1e) Test made by :
Location :
Purpose of test : 1-~ rt 'prcote c ~ \'O't> .
Representative :
Witness :
Flow hydrant number. m -s :;
Pitot reading : S 3 .PST
static hydrant number: J5iow Q re
Static : /Of P.S.l.
II I
Nozzle size : d ~)l
G .P.M.: ( (Q90
031 BI A.)O;J()
Residual : JOI P.S.I.
OCT -21-1996 13 :45 409 7 64 3452 99%
lct]004
P.04
Figure XU
Development Permit
City of College Station, Texas
Site Legal DescriptioGT!d<.o.>c:cr.:> L A •• 1 S:,.,T. 2rJ
Site OwnerG Uk Sn+rQo Address :~O.~ 9q{:o Q Telephone: .
7"°-r BS~ba~ s,_ 'Ze>3. B
Addres£Eltr§ ~. Tx Architect/ IA I r I I
Eng in e er: V4.~ l!=>. ~Sf~, J),. E,. Telephone No~~ l I oo
I
Address : -------------
Telephone No : _________ _
Date Application Filed : 'Z ~ l'Z ·~1
Application is hereby made for the following development specific waterway alterations :
£.br2.w1 ~ . fik?1A11 L~ae 1 6-NO ~do <cite. ~. St'w.,
..
( l! 1 l j, I
~tfl\ ln""to G-)'L9t t""!G COer:f?.•
0 Application Fee
~ Signed Certifications
0 Drainage and erosion control plan, with supporting Drainage Report two (2) copies each .
0 Site and Construction Plans, with supporting Drainage Report two (2) copies each.
0 Other: ------------------------------
ACKNOWLEDGMENTS :
I, VU ~k G t;!tl:=a"1l02 l?t,design engineer/owner, hereby acknowledg e or affirm that : • I ,
The information and conclusions contained in the above plans and supporting documents comply
with the curre nt requirements of the City of College Station, Texas City Code, Chapter 13 and its
ass ociated Drainage Policy and Design Standards .
As a condition of approval of this permit application, I agree to construct the improvements
proposed in this application according to these documents and the requirements of Chapter 13 of
the C ollege Station City Code
Prope rty Owner(s) Contractor
Figure XU Continued
CERTIFICATIONS : (for prH;d alterations within designated flood hazard areas .)
M~L G. Uf2.-
A. I , •;,.. -, certify that any nonresidential structure on or proposed
to be on this site as part of this application is designated to prevent damage to the structure or its
suit of flooding from the 100 year storm .
'2-lZ-:f7
Date
B . I, certify that the finished floor elevation of the lowest
floor , including an basement , of any residential structure, proposed as part of this application is
at or above the base flood elevation established in the latest Federal Insurance Administration
Flood Hazard Study and maps, as amended .
Engineer Date
c. I, M~G1tbb. ~Co. certify that the alterations or development covered by
this permit shall not diminish the fl od-carrying capacity of the waterway adjoining or crossing
this permitted site and that such alt e rations or development are consistent with requirements of
the City o o ege Station City Code, Chapter 13 concerning encroachments of flood ways and of
fl dwa frin o s .
. 1&~ P.E.
Date
~--~~~~_G_,_h6~_1_,_.__'C~ do certify that the proposed alterations do not raise the level
r flood above elevation established in the latest Federal Insurance Administration
d H ard Study .
' t~ .c.
Date
C onditions or comment s as part of a pproval :
~~~~~~~~~~~----.~~~~~·~·G,
~-
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 devel o pment. All development shall be in accordance with the plans
and specificati o n s submitted to and approved by the City Engineer for the above named project.
All of the appli c able codes and ordinances of the City of College Station shall apply .
fonns/ cngl<\>crmitl I 0 -9 1
~-~~CITY OF COLLEGE STATION
~ ~ ENGil'EERING DIVISION
Post Office Box 9960 1101 Texas A venue
College Station, Texas 77842-0960
February 5 , 1997
Steve Homeyer
Development Services Department
City of College Station
P .O. Box 9960
College Station , TX 77840
(409) 764-3570
Re: College Station Library Drive Access on FM2818
Dear Steve ,
As requested, please consider this letter as our official request for a variance to the
Driveway Ordinance for the driveway to be shared by the College Station Library
and the Desperado Oil convenience store onto FM 2818.
We request that we be allowed to exceed the standard maximum width of
commercial driveways to allow the inclusion of a median within the driveway and
still meet Fire Department access criteria .
Please let me know if you have any questions or comments about this issue .
~ilt
Brett McCulif
Project Manager
Figure XII
Development Permit
City of College Station, Texas
Architect/ tb
Engineer : ~-rm-~vr-. (; .
Address: --------------
Telephone No : _________ _
Date Application Filed : 11...-zo-O(<o Approved: ___________ _
eby.. made for the following development specific waterway alterations :
0 Application Fee 10/A-
Signed Certifications
-El Drainage and erosion control plan , with supporting Drainage Report two (2) copies each .
--Q Site and Construction Plans, with supporting Drainage Report two (2) copies each .
0 Other: ------------------------------
ACKNOWLEDGMENTS:
I , M~L--G .-tJ~rceQ.,~esign engineer/owner, hereby acknowledge or affirm that:
I
The information and conclusions contained in the above plans and supporting documents comply
with the current requirements of the City of College Station, Texas City Code, Chapter 13 and its
associated Drainage Policy and Design Standards.
As a condition of approval of this permit application, I agree to construct the improvements
proposed in this application accordil!g to these documents and the requirements of Chapter 13 of
the Col e Station · de .
Contractor
. "
Figure XII Continued
CERTIFICATIONS: (for proposed alterations within designated flood hazard areas .)
I, tfvtte_~ G ~ ~~( R .certify that any ..!!Q!!_f esidential structure on or proposed
e on thi · e as part of this application is designated to prevent damage to the structure or its
c tents s a r su~t of flooding from the 100 year storm .
(' r !<lt? ~ rz '2~2'o ..ctec,
!~~~~~~~~~~~~~~~~~
ate
B. I, certify that the finished floor elevation of the lowest
floor , including any basement, of any residential structure, proposed as part of this application is
at or above the base flood elevation established in the latest Federal Insurance Administration
Flood Hazard Study and maps, as amended.
Engineer Date
C. I, ~ G ' HEs"CCt2 P,t_ certify that the alterations or development covered by
this permit shall not diminish the fl ad-carrying capacity of the waterway adjoining or crossing
this permitted site and that such alterations or development are consistent with requirements of
the 1ty f College Station City Code, Chapter 13 concerning encroachments of flood ways and of
way frin
ate
I , vu ~ G t ~ R do certify that the proposed alterations do not raise the level
of the 10 r flood above elevation established in the latest Federal Insurance Administration
1 od
Date
Conditions or comments as part of approval:
~~~~~~~~~~~~~~~~~~~-
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. All development shall be in accordance with the plans
and specifications submitted to and approved by the City Engineer for the above named project.
All of the applicable codes and ordinances of the City of College Station shall apply .
formstcnW~it/10 -91
~-~ r Cl1~09ic~s S:£!-LEG1~1~!~Te!~N ~ College Station , Texas 77842-9960
June 21, 1996
Allen Johnson
500 C Street Southwest Room 421
Washington, DC 204 72
Dear Mr. Johnson :
(40 9) 7 6 4-3 500
I spoke with Mr. Burian last Friday, at which time I requested specific floodway
information on Bee Creek Tributary "B" in College Station, Texas. In particular I am
interested in map number 48041CO182C. On that panel one of the streams is Bee Creek
Tributary "B". Where that tributary crosses under Welsh Boulevard @ elevation 278', the
floodway is skewed in relation to the flowline of the creek. An applicant is platting the
comer tract @ FM2818 and Welsh and as part of our platting requirements must show the
floodway location. In the field, the stream cross-section at this location is approximately
symmetrical about the centerline. I would like to see the cross-section data used in the
HEC-2 model at this location. Also I would like to see the input and output runs showing
the floodway location and th~ir respective station numbers. From the flood insurance
study I have, the total floodway width is detailed but not the floodway width in
relationship to the centerline data of the creek. Because the floodway is skewed , the
property is greatly affected and the applicant and the City want to assure themselves of the
proper location of the floodway.
I talked to Mr. Burian earlier today and he informed me that he found the data I am
requesting . This letter is being forwarded to you for your records .
If you have any questions please do no t he sitate to call. I can be reached at ( 40 9) 764-
3570 .
Thank you for your assistance.
Home of Texa s A&M University
OCT-28-1996 18:12 FROM HESTER ENG I NEE RING CO. TD CS ENGR. P.0 1
HESTER ENGINEERING COMPANY
7607 EASTMARK DRIV§_,, SUITE 253-B
COLLEGE STATION, 1 EXAS 77840
Ph: ( 409) 693-1100 ' ·
Fax: ( 409) 693· 1075 \
Dace : ·~ ·~b
From: Michael G. Hester., P . E.
To' Vazo N ~ {)..A.au;y~·r
1
PC, _
112 '~l~ -~ LI?~ Lu~NC. h.,w ~c'.s.. ·
Govt~~
Michael G. Hester, P .E.
Attachments:
Copies To : fJnz:;TT
1 of q Sheets
OC T-28-1995 18=12 FROM HEST ER ENGINEERING CO. TO CS ENGR. P.02
WATERLINE FLOW ANALYSIS
COLLEGE ST A TION
LIBRARY
F.M. 2818
COLLEGE STATION, BRAZOS COUNTY,
TEXAS
OCTOBER, 1996
Submitted By :
Michael G. Hester. P.E.
Hester Engineering Company
7607 Eastmark Drive, Suite 253-B
College Station, TX 77840
( 409) 693-1100 fx:( 409)693· 1075
OCT-28-1995 1s:12 FROM HESTER ENGINEERING CO. TO
HESTER ENGINEERING COMPANY
CIVIL ENGINEERING SERVICES
October 28, 1996
7607 EASTMARK DRIVE.t SUITE 253-8
COLLEGE STATION, Tt:.XAS 77840
( 409)693· 1100 fx:( 409)693· 1075
Ms. Veronica Morgan, P.E., Assistant City Engineer
College Station Engineering Division
1101 Texas Avenue
College Station, TX 77842
Re: COLLEGE STATION LIBRARY
Waterline Flow Analysis
Dear Veronica,
CS ENGR. P.03
Hester Engineering Company has been hired to prepare Site
Engineering plans for the proposed College Station Library on
F .M. 2818. Please find attached a Waterline Flow Analysis for
your review.
I have determined the fire flow requirements from the
formula the College Station Fire Department provided and
discussed the site with Fire Marshall John Meece. With a fire
flow of 1250 gpm the analysis reveals that the residual
pressure and velocities stay within acceptable limits.
At your earliest convenience please review the report and
contact me with any additional flow conditions or questions.
xc: Bret Mccully, Assistant City Engineer
OCT-28-1995 18:13 FROM HESTER ENGINEERING CO. TO CS ENGR. P.04
KEY MAP
..... --= ~--~J> l1 11l ,t~-· ?'.,,-· E"" · ---«"A l\>-·1 /'-) N ~ ~ ~~fr.) A ~v l# l j j l~,----· t----· t:::~ l-c?~ t:~: :J I ~l l_~~ , ~ ~ v f'flr'
f.M. 2818
CO L--t:{AE: 51~AllO NJ l3RAZ05 COUNIYJ
ltXA5
OCIOB>r:;~J 1996
,-X-12"WA'fm1Ne I X~f
/ P2 22.~· ~NII
10 ·
22.~ · 1'fN!7
I
1
\
l~.001 .
Pl<fP~t/ ~Y:
Michael u. Hester. P ,f;,
Hl;;Sfe R eNulNel;;l<INu COMPANY
1607 f::ASfWRK t/~lve. SUI-re 2?'?-~
COl-L-~uf; 5fAf10N, IX 778'10
( 409)6~-1 1 00 fa:( 409)69~-107?
FR: tm'.~fMe:Nf 51AMflt: CONNEC110N
ro 1'f WCAfl::D ~Ii? Fifi!: 5Pli?INKJ..f:IC! 5V511:-M
tieSIC.N .
r-l"lelf'E':ffl L.JNt;
I r-F1?0f'OSC:t;i wmia.. u
__ I . /-··-··-i
8 J
fl~L.U _/
!X).o I 90 Jl20
JIX>
PIC!Cf'~D
OOWINGi
16%45.F. <~ ',
\
5C.AJ.I:: 111 -100·
fl~ 'fl-ON -JB--C•(A"0.!7)
-18" c-... < 2?<XXJ 5.F. "O .'7 > u... owsi l?t;vt:t..OPME.~~r
-18*0.B*-1'?8
-22:71 CPM
L.OIV Fll<f HALAW -ror.;
.. 2211 CAPM "' O. ?O .. II~ UPM
E:XP()5l.e ~CflON o 10"
-11'8. 1.10 -12?2 (PM.
11Vl.N!7 fO 2!70 a'M -1270 Ul'M .
0 n
-l
I
l\J
CD
I
I-'
\.D
\.D en
I-'
CD ..
I-' w
11 ;;o
0
3
I m
(fl
-l m ;;o
m z
Gl
z m m ;;o
~ z
Gl
n
0
-l
0
n
(fl
m z
Gl ;;o
OCT-28-1995 18:13 FROM HESTER ENGINEERING CO. TD CS ENGR. P. 05
************************************************
S U M M A R Y 0 F 0 R I G I N A L DAT A
************************************************
CyberNet Version 2.18. Copyright 1991,92 Haestad Methods Inc.
Run Description: Basic Network
Drawing: CSL-H20
P I P E L I N E DAT A
STATUS CODE: XX -CLOSED PIPE
CV -CHECK VALVE
BN -BOUNDARY NODE !?U -PUMP LINE
PIPE
NUMBER
70-BN
80
90
100
NODE NOS.
#1 #2
0
100
110
110
100
110
120
130
JUNCTION N 0 D E
JUNCTION
NUMBER
100-1
110-1
120-1
130-1
JUNCTION
TITLE
FH NO. 1
TEE
FH NO. 2
BUILDING
RV -REGULATING VALVE
LENGTH
(ft)
215.0
218.0
330.0
150.0
D A T A
EXTERNAL
DEMAND
(gpm)
0.00
0.00
800.00
450.00
DIAMETER
(in)
8.0
8.0
8.0
6.0
ROUGHNESS
COEFF.
150.00
150.00
150 .00
150.00
JUNCTION
MINOR LOSS
COEFF.
3.20
1. so
2.10
3.00
ELEVATION CONNECTING PIPES
(ft)
276.00
275.00
273.00
276.00
70
80
90
100
80
90 100
BND-HGL
(ft)
515.70
OCT-28-1996 1s:14 FROM HESTER ENGINEERING CO. TO
+-----------------------------------------------+
MAXIMUM DIMENSIONS
Number of pipes . .. .. .. . .. . . ... . . .. .. . 25
Number of pumps . . . . . . . . . . . . . . . . . . . . . . 10
Number junction nodes................. 25
Flow meters . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Boundary nodes . . . . . . . . .. . . . . . . . .. . . . . 10
Variable storage tanks .. . .. . ... . . . . . . 10
Pressure switches . . . .. .. . .. . . .. .. . . .. 10
Regulating Valves..................... 10
Items for limited output . . . ... . ...... 25
limit for non-consecutive numbering . . 270
+-----------------------------------------------+
Cybernet version 2.18. SN: 1132184437-25
Extended Description:
U N I T S S P E C I F I E D
FLOWRATE ............ =gallons/minute
HEAD (HGL) . . . . . . . . . . = feet
PRESSURE ............ ~ psig
0 U T P U T 0 P T I 0 N DAT A
CS ENGR. P.07
OUTPUT SELECTION: THE FOLLOWING RESULTS ARE INCLUDED IN THE TABULATED OUTPUT
ALL CLOSED PIPES ARE NOTED
ALL PIPES WITH PUMPS
FOLLOWING PIPES
70 80 90 100
FOLLOWING JUNCTION NODES
100 110 120 130
MAXIMUM AND MINIMUM PRESSURES
S Y S T E M C 0 N F I G U R A T I 0 N
=
NUMBER OF PIPES ................... (p) """ 4
NUMBER OF JUNCTION NODES .......... (j) = 4
NUMBER OF PRIMARY LOOPS ........... (1) = 0
NUMBER OF BOUNDARY NODES .......... (f) = l
NUMBER OF SUPPLY ZONES ............ (Z) ; 1
2
*************************************
S I M U L A T I 0 N R E S U L T S
*************************************
The results are obtained after 2 trials with an accuracy ~ 0.00000
OCT-28-1996 18:14 FROM HESTER ENGINEERING CO. TO CS ENGR. P. 08
S I M U L A T I 0 N D E S C R I P T I 0 N
CyberNec Version 2.18. Copyright 1991,92 Haestad Methods Inc.
Run Description: Basic Network
Drawing: CSL-H20
PIPELINE R E S U L T S
STATUS CODE: BN -BOUNDARY NODE PU -PUMP LINE XX -CLOSED PIPE
CV -CHECK VALVE RV -REGULATING VALVE TK -STORAGE TANK
PIPE
NUMBER
70-BN
80
90
100
NODE NOS.
#1 #2
0
100
110
110
100
110
120
130
FLOWRATE
(gpm)
1250.00
1250.00
800.00
450.00
HEAD
LOSS
(ft)
4. 56 .
4. 62 .
3.06
1. 94
PUMP
HEAD
(ft)
0.00
0.00
0.00
0.00
MINOR
LOSS
(ft)
3.16
1.48
0.85
l.21
LINE
VELO.
(ft/s)
7.98
7.98
5.ll
5.11
JUNCTION N 0 D E R E S U L T S
JUNCTION
NUMBER
JUNCTION
TITLE
100-1 FH NO. 1
ll0-1 TEE
120-1 FH NO. 2
130-1 BUILDING
M A X I M U M AND
P R E S S U R E S
JUNCTION
NUMBER
100
110
SUMMARY 0 F
EXTERNAL
DEMAND
(gpm)
0.00
0 .00
800.00
450.00
HYDRAULIC
GRADE
(ft)
507.99
501.88
497.97
498.73
JUNCTION
ELEVATION
(ft)
276.00
275.00
273.00
276.00
PRESSURE
HEAD
(ft)
231.99
226.88
224.97
222.73
M I N I M U M V A L U E S
MAXIMUM
PRESSURES
(psi)
100.53
98.32
I N F L 0 W S
JUNCTION MINIMUM
NUMBER PRESSURES j
(psi)
---------------------
130 96.51
120 97.49
AND 0 U T F L 0 W S
(+) INFLOWS INTO THE SYSTEM FROM BOUNDARY NODES
(-) OUTFLOWS FROM THE SYSTEM INTO BOUNDARY NODES
PIPE
NUMBER
FLOWRATE
(gpm)
HL/
1000
(ft/ft)
21.19
.21.19
9.27
12.97
JUNCTION
PRESSURE
(psi)
OCT-28-1996 18:14 FROM HESTER ENGINEERING CO .
70
NET SYSTEM INFLOW =
NET SYSTEM OUTFLOW =
NET SYSTEM DEMAND =
1250.00
1250.00
0 .00
1250.00
**** CYBERNET SIMULATION COMPLETED ****
DATE: 10/28/1996
TIME : 18:19:07
TO CS ENGR. P.09
OCT-28-1996 1s:15 FROM HESTER ENGINEERING CO. TO CS ENGR. P.10
, ..
Flow Test Report
Dale .LO= /(o"'£'2 Time :;J : 00 A .M@
TSmadeby : • ~~ .. ~ !tr ~ )
LocaUon: F~-sk l~ L(}cJ-l~1'de
Purllose oftest : I-~ rt ?ro+e '~ \.1
0':">
IWpresentative : L , L ,'du-{JJ, { >+\: !-\...""'
Witness :
flow hydrant number. m -s 3 ' I Nozzle size : d g
Pltot reading : 8 3 .}?$1
Stalic hydrant number : --a;ol,kl 0 re
Static : !Of P.S.I .
G.P.M.: ( '290
031 BI .A.JOJO
Residual : JOI
OCT-21-1996 13:45 409 ?64 3452
P.S.I.
99% P.04
DRAINAGE REPORT FOR
COLLEGE STATION LIBRARY
800 F.M. 2818
DESPERADO OIL CO. INC.
700 F.M. 2818
COLLEGE STATION, BRAZOS COUNTY,
TEXAS
APPROVED FOR
Submitted By:
Michael G. Hester, P.E.
Hester Engineering Company
7607 Eastmark Drive, Suite 253-B
College Station, TX 77840
( 409) 693-t t 00
CERTIFICATION
I hereby certify that this report and accompanying
drainage plan for the drainage design was prepared by me in
accordance with the provisions of the Cities Drainage Policy
and Design Standards for the owners thereof.
f\:2~51~
----t-----:--~t-=-~~~~-r-~~~~ 1 G. Hest r, P.E.
ered Professional Engineer No. 69104
of Texas
COLLEGE STATION LIBRARY -DESPERADO OIL CO. -CERTIFICATION
. ·· ... :.
DRAINAGE ANALYSIS
INTRODUCTION
TABLE OF CONTENTS
EXISTING DRAINAGE BASIN DESCRIPTION
PROPOSED DRAINAGE
CONCLUSION
KEY MAP
SITE DRAWING Ct
DRAINAGE MAPS
PREDEVELOPMENT CONDITIONS
DRAINAGE AREA RUNOFF CALCULATIONS
POSTDEVELOPMENT CONDITIONS
DRAINAGE AREA RUNOFF CALCULATIONS
BEE CREEK CROSS SECTION
DRAINAGE STRUCTURES
DS-1
DS-2
DS-4
DESPERADO OIL CO. DRAINAGE PLAN
TABLE OF CONTENTS
DRAINAGE ANALYSIS
COLLEGE STATION LIBRARY -800 F.M. 2818
DESPERADO OIL COMPANY-700 F.M. 2818
COLLEGE STATION, TX
NOVEMBER, 1996
INTRODUCTION:
The proposed development is located along F.M. 2818 at the
the intersection of Welsh Street. The legal description is
Southwood Valley Section 30, Lots Al and A2 and is 8.86 acres.
The proposed improvements include a 16008 square foot Library
building, a convience store/gas station, parking and the
associated infrastructure. The drainage area consists of
grassland with numerous large oak trees. The terrain slopes in a
southerly direction toward Bee Creek Tributary B with an average
grade of about 1.0%. The latest Flood Insurance Rate Maps
(48041C 0182 C) shows that a portion of the tract is in the
regulatory 100-year flood plain. The site is zoned Ce· cial and
is being developed by the City of College Station, 'hali Shear,
9960 S. Texas Avenue, College Station, Tx 77842, ( 764-3500
and Desperado Oil Co., Inc.
EXISTING DRAINAGE BASIN DESCRIPTION:
The proposed development is located in the Bee Creek
Drainage Basin No. 5, Regulatory Channel Reach No. I which is a
primary channel. The 100 year Current Condition Discharge is 2955
cubic feet per second (cfs) and the Ultimate is 4855 cfs, Table
III-6, College Station "DRAINAGE SYSTEM ANALYSIS". The minimum
floor elevation for this channel reach is Base Flood plus 4 feet,
page 11, College Station "DRAINAGE POLICY AND DESIGN STANDARDS".
There are four storm drainage pathways for the site. Area A
flows toward Welsh Street, Area B flows east along F. M. 2818,
Area C, the majority of the runoff from the site flows south to
Bee Creek and Area D flows toward Welsh Street. A graphic of the
existing drainage area's is included in the appendix "DRAINAGE
MAPS".
PROPOSED DRAINAGE:
The proposed design will route the majority of the runoff
across the site via driveways and discharge it into a proposed
storm sewer system where it will discharge into Bee Creek.
Predevelopment and postdevelopment conditions were
calculated to determine the additional runoff generated. The
ultimate development of the site will generate a QlOO of 43. 62
cfs but will only contribute an additional 19.6 cfs because 24.02
cfs is being released from the site under existing conditions.
With regard to impacting down stream property owners, the
additional runoff generated by the improvements to this site was
analyzed to determine if the water surf ace elevation changed due
to the proposed improvements. The cross section chosen as the
COLLEGE STATION LIBRARY, DESPERADO OIL CO. PAGE 1 OF 2 PAGES
point of interest was at the southern most property line of the
College Station Library property.
Two analysis were ran, the first was an analysis at
existing flow and the second analysis was ran with the additional
runoff from the proposed improvements. Below is a table showing a
summary of the results before and after the proposed
improvements.
PREDEVELOPMENT
CONDITIONS
QtOO
(CFS)
WATER SURFACE
ELEVATION
3000 273.28
POST DEVELOPMENT Q 100 WATER SURFACE
ELEVATION CONDITIONS (CFS)
3020 273.29
The additional runoff for the site will raise the water
surface elevation of Bee Creek by 0.01 feet for QlOO. See
Appendix "BEE CREEK CROSS SECTION". The table shows that the
additional flow generated by the proposed improvements will not
change the water surface elevation and therefore, detention is
not required nor planned for the site. Storm runoff calculations
for pre and post-development conditions, an analysis of the Bee
Creek cross section and storm drain pipe calculations have been
included for your review.
CONCLUSION:
This project is in compliance with the City's Stormwater
Design Standards.
COLLEGE STATION LIBRARY, DESPERADO OIL CO. PAGE 2 OF 2 PAGES
HIGH SCHOOL
ESPE RADO
OIL CO.
t
N
BEE CREEK
C H URCH
COLLEGE
S TATION
LI BRARY
PARK
KfY MPJP
COllE:UE: 5f Af~ON ~ ~BRIV<Y
800 f .M . 2818
D~5P~RADO On~ COuJ ~NCu
100 f .M. 2818
COL-L-faf 5fAflON , t?RAZ05 COUN IY,
ffXA5
NOVfMBfR, 1996
1-w w
0::
1-
(/)
I
(/)
_J w
5
'"" '--------------------------------.,\
\
SOUTHWOOD VALLEY SEC 30
VOL 2110 PC 166
D:IST1'IOW ... ~UH[
D:ISTlNO K'WDt Ufl[ _,,_
""'"""' CAs UHC
"'-""--·--OTffcm:-
~-
* "
«ttf CITY OF
COil.E GE
STATIO N
PUBLIC
LIBRARY
~ln&.TlO Jl',Tw:u..
I-IT DELL
... ssoc1 "''' s "' ~ C H I T [ C T S
~r.o:-~.1.$11'1'[ 1"--1 F-f""..:u..n 1"""°
rAX(OOf)tN--
......... 96000
o.ow .. .,.., -
Ct..ck..i Br: -
~~ !.~.,3&"~~'\!!.ll:!I'
~~...:..'.1'~ ... -.. _
cau.an:n...,..ao=.-----•-ID C>Ol.UOl:STATIC*-TUl •~-JICFP--11U--
f!r:1'~.....C:.C~3ii.-... _ I S:T'~"'::'---~, c 1
.~~T~~ .
DRAINAGE MAPS
COLLEGE STATION LIBRARY -DESPERADO OIL CO., INC.
281.1 _,.. ----
' ' ' ' '
278.
X-18"RCP
-----~----------' ' '
f.M. 2818
--------------
276.9
----------------------------------~ dl \
'
ARf A B ~
-\-276.8 ~AB/'C 274.8 -\-
' ' • • -\-
0.6'7 ,AC. IMPf':l(V . • 275 .1 0 • 2.~ ,AC . Pf':l(V . • .. _ .. _ .. _
##
Pl. 279.0 J#
~-----279 .8 ---------~---i ---~280 9 #
•••••• ~~ # I ~~ # ~~..... •# COL.L.E:u!': 5fA110N L.I~ 51it ..... ~ . ~~~ # c 7.161 K,)
~~ # ~~ 2ao __ _
ARf A C
6.66 ,AC . P!':l(VIOU5
----PRr:D!::V!::L.OP Ml::Nf COND l110N5
COL.L.1::011:: 51 A110N L. IBRARY
'800 f.M. 2818
Vegetation NO\/eMBE:R, 1996
281.1
X-18"RCP f.M. 2818 276.9
..... ---------------------------------------~ d d \ ------------------·----------' ' ' ' '
278 .
• I
I
-\-276.8
AReA B
2A4 ,AC ,
0.% ,AC, IMPi::RV .
'
274.8-\--\-
1.88 ,AC , Pi::RV . O
..
I
I
I
I
I
275. 1
,------• I
I I
I I
I I
I ~ I
·--I I --I I --.._. • • .J COL..L-E::af 5fA110N L-1~
I I ( 7 .161 K,) .l ~· I ( 1.69:3> K,) ] ---: "" t/1':5PAl<Al/O OIL-51-rt ,,,,.
: : AReA C • __,,,,,,,,
I I 2.18 ,AC, ,_-
I ""• • "\ 0.44 ,AC, Pi::RV. _ ..
I \ 1.74 ,AC, IMPE::RV. .~
! ~ ~f,AC~ \ .... J-7 ~ #~J W-OA!? ,AC , IMPi::RV . ~ • #'# ~ ~--....: •##
: I 0.04 ,AC , F'eRV . I I 1•
IL__ -I . -.......... ··-.. -.,_ #
........ I --.. ##
....------·--.·........... ## ~--AReA ~ ,-~·~·,·~~,...._.,,...,,iii'9'--'~-Y--"""'''?<C/""'7~,,__-~,,.-v
P05WfVfL-OPMfNf CONDl110 N
COL-L-f uf 51 A fl ON L-IBRARY
800 f .M. 2818
NOV~MBE'.R, 1996
PREDEVELOPMENT CONDITIONS
COLLEGE STATION LIBRARY -DESPERADO OIL CO., INC.
Quick TR-55 Ver.5.44
Executed: 13:58:29
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA A
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.50
0.14
Tc
(min)
Wtd.
'C'
10.00 0.431
RETURN FREQUENCY = 5 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.431 7.690
Total
acres
0.64
Peak Q
(cf s)
2.12
Quick TR-55 Ver.5.44
Executed: 13:58:29
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA A
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.50
0.14
Tc
(min)
Wtd.
I c I
10.00 0.431
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.431 8.630
Total
acres
0.64
Peak Q
(cf s)
2.38
Quick TR-55 Ver.5.44
Executed: 13:58:29
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA A
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0 .50
0.14
Tc
(min)
Wtd.
'C'
10.00 0.431
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
Adj. I
'C' in/hr
0.431 9.860
Total
acres
0.64
Peak Q
(cfs)
2.72
Quick TR-55 Ver.5.44
Executed: 13:58:29
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA A
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.50
0.14
Tc
(min)
Wtd.
IC'
10.00 0.431
RETURN FREQUENCY = 50 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.431 10.860
Total
acres
0.64
Peak Q
(cf s)
3.00
Quick TR-55 Ver.5.44
Executed: 13:58:29
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA A
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0 .300
IMPERVIOUS 0.900
Area
acres
0.50
0.14
Tc
(min)
Wtd.
IC'
10.00 0.431
RETURN FREQUENCY = 100 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
Adj. I
'C' in/hr
0.431 11.640
Total
acres
0.64
Peak Q
(cf s)
3.21
Quick TR-55 Ver.5.44
Executed: 13:58:56
S/N:l315430080
11-25 -1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA B
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
2.83
0.65
Tc
(min)
Wtd.
'C'
10.00 0.412
RETURN FREQUENCY = 5 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.412 7.690
Total
acres
3.48
Peak Q
(cfs)
11.03
Quick TR-55 Ver.5.44
Executed: 13:58:56
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA B
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
2.83
0.65
Tc
(min)
Wtd.
'C'
10 .00 0.412
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.412 8.630
Total
acres
3.48
Peak Q
(cfs)
12.38
Quick TR-55 Ver.5.44
Executed: 13:58:56
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA B
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr .
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
2.83
0.65
Tc
(min)
Wtd.
I c I
10.00 0.412
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.412 9.860
Total
acres
3.48
Peak Q
(cf s)
14.14
Quick TR-55 Ver.5.44
Executed: 13:58:56
S/N:l315430080
11-25 -1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA B
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
2.83
0.65
Tc
(min)
Wtd.
'C'
10.00 0.412
RETURN FREQUENCY = 50 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.412 10.860
Total
acres
3.48
Peak Q
(cfs)
15.57
Quick TR-55 Ver.5.44
Executed: 13:58:56
S/N:l315430080
11 -25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA B
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
2.83
0.65
Tc
(min)
Wtd.
'C'
10.00 0.412
RETURN FREQUENCY = 100 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.412 11.640
Total
acres
3.48
Peak Q
(cfs)
16.69
Quick TR-55 Ver.5.44
Executed: 14:00 :27
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA C
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where : Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
IC'
0 .300
Area
acres
6.88
Tc
(min)
Wtd.
IC'
10.00 0.300
RETURN FREQUENCY = 5 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C ' x 1
========================= ========
Adj. I
'C' in/hr
0.300 7.690
Total
acres
6.88
Peak Q
(cf s)
15.87
J
Quick TR-55 Ver.5.44
Executed: 14:00:27
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA C
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
I c I
0.300
Area
acres
6.88
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
Adj. I
'C' in/hr
0.300 8.630
Total
acres
6.88
Peak Q
(cfs)
17.81
I
I
I
Quick TR-55 Ver.5.44
Executed: 14:00:27
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA C
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
IC'
0.300
Area
acres
6.88
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 25
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
=========================
Adj. I
'C' in/hr
0.300 9.860
Total
acres
6.88
years
========
Peak Q
(cfs)
20.35
I
I
J
Quick TR-55 Ver.5.44
Executed: 14:00:27
S/N:1315430080
11-25 -1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA C
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
I c I
0.300
Area
acres
6.88
Tc
(min)
Wtd.
IC'
10.00 0.300
RETURN FREQUENCY = 50 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 10 .860
Total
acres
6.88
Peak Q
(cf s)
22.42
Quick TR-55 Ver.5.44
Executed: 14:00:27
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA C
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
IC'
0.300
Area
acres
6.88
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 100 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 11.640
Total
acres
6.88
Peak Q
(cfs)
24.02
Quick TR-55 Ver.5.44
Executed: 13 :59:50
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA D
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
IC'
0.300
Area
acres
0.41
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 5 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 7.690
Total
acres
0 .41
Peak Q
(cfs)
0.95
Quick TR-55 Ver.5.44
Executed: 13:59:50
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA D
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
IC'
0.300
Area
acres
0.41
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd .'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 8.630
Total
acres
0.41
Peak Q
(cf s)
1. 06
Quick TR-55 Ver.5.44
Executed: 13:59:50
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA D
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
IC'
0.300
Area
acres
0.41
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 9.860
Total
acres
0.41
Peak Q
(cf s)
1.21
Quick TR-55 Ver.5.44
Executed: 13:59:50
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA D
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
'C'
0.300
Area
acres
0.41
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 50 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 10.860
Total
acres
0.41
Peak Q
(cfs)
1. 34
Quick TR-55 Ver.5.44
Executed: 13:59:50
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
PRE DEVELOPMENT CONDITIONS
AREA D
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
'C'
0 .300
Area
acres
0 .41
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 100 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 11.640
Total
acres
0 .41
Peak Q
(cfs)
1. 43
POSTDEVELOPMENT CONDITIONS
COLLEGE ST A TION LIBRARY -DESPERADO OIL CO., INC.
Quick TR-55 Ver.5.44
Executed: 14:12:24
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA A
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.97
0.28
Tc
(min)
Wtd.
I c I
10.00 0.434
RETURN FREQUENCY = 5 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.434 7.690
Total
acres
1. 25
Peak Q
(cf s)
4.18
Quick TR-55 Ver.5.44
Executed: 14:12:24
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA A
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.97
0.28
Tc
(min)
Wtd.
IC'
10.00 0.434
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.434 8.630
Total
acres
1. 25
Peak Q
(cfs)
4.69
Quick TR-55 Ver.5.44
Executed: 14:12:24
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA A
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.97
0.28
Tc
(min)
Wtd.
'C'
10.00 0.434
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.434 9.860
Total
acres
1. 25
Peak Q
(cfs)
5.35
Quick TR-55 Ver.5.44
Executed: 14:12:24
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA A
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.97
0.28
Tc
(min)
Wtd.
IC'
10.00 0.434
RETURN FREQUENCY = 50 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.434 10.860
Total
acres
1. 25
Peak Q
(cfs)
5.90
Quick TR-55 Ver.5.44
Executed: 14:12:24
S/N:1315430080
11-25 -1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA A
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.97
0.28
Tc
(min)
Wtd.
IC'
10.00 0.434
RETURN FREQUENCY = 100 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.434 11.640
Total
acres
1. 25
Peak Q
(cfs)
6.32
Quick TR-55 Ver.5.44
Executed: 14:13:08
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA B
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
1. 88
0.56
Tc
(min)
Wtd.
'C'
10.00 0.438
RETURN FREQUENCY = 5 years
'C' adjustment, k = 1
Adj . 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.438 7.690
Total
acres
2.44
Peak Q
(cfs)
8.21
Quick TR-55 Ver.5.44
Executed: 14:13:08
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA B
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I =in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
1. 88
0 .56
Tc
(min)
Wtd.
'C'
10.00 0.438
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
Adj. I
'C' in/hr
0.438 8.630
Total
acres
2.44
Peak Q
(cf s)
9.22
Quick TR-55 Ver.5.44
Executed: 14:13:08
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA B
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
1. 88
0.56
Tc
(min)
Wtd.
'C'
10.00 0.438
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.438 9.860
Total
acres
2.44
Peak Q
(cfs)
10.53
Quick TR-55 Ver.5.44
Executed: 14:13:08
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA B
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
1. 88
0.56
Tc
(min)
Wtd.
IC'
10.00 0.438
RETURN FREQUENCY = 50 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.438 10 .860
Total
acres
2 .44
Peak Q
(cf s)
11.60
Quick TR-55 Ver.5.44
Executed: 14:13:08
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA B
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0 .300
IMPERVIOUS 0.900
Area
acres
1. 88
0.56
Tc
(min)
Wtd.
'C'
10.00 0.438
RETURN FREQUENCY = 100 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.438 11.640
Total
acres
2.44
Peak Q
(cfs)
12.43
Quick TR-55 Ver.5.44
Executed: 14:15:01
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA C
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.44
1. 74
Tc
(min)
Wtd.
I c I
10.00 0.779
RETURN FREQUENCY = 5 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C ' in/hr
0.779 7.690
Total
acres
2.18
Peak Q
(cfs)
13.06
Quick TR-55 Ver.5.44
Executed: 14:15:01
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA C
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.44
1. 74
Tc
(min)
Wtd.
IC'
10.00 0.779
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.779 8.630
Total
acres
2.18
Peak Q
(cfs)
14.65
Quick TR-55 Ver.5.44
Executed: 14:15:01
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA C
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
RETURN FREQUENCY = 25
'C' adjustment , k = 1
Adj. 'C' = Wtd.'C' x 1
years
Subarea
Descr.
Runoff
'C'
PERVIOUS 0 .300
IMPERVIOUS 0.900
Area
acres
0 .4 4
1. 7 4
Tc
(min)
Wtd.
'C'
10.00 0.779
=========================
Adj. I
'C' in/hr
0.779 9.860
Total
acres
2.18
Peak Q
(cf s)
16.74
Quick TR-55 Ver.5.44
Executed: 14:15:01
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA C
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.44
1. 74
Tc
(min)
Wtd.
'C'
10.00 0.779
RETURN FREQUENCY = 50 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.779 10.860
Total
acres
2.18
Peak Q
(cfs)
18.44
Quick TR-55 Ver.5.44
Executed: 14:15:01
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA C
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0 .44
1. 74
Tc
(min)
Wtd.
IC'
10.00 0.779
RETURN FREQUENCY = 100 years
'C' adjustment , k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.779 11.640
Total
acres
2.18
Peak Q
(cfs)
19.76
Quick TR-55 Ver.5.44
Executed: 14:15:32
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA D
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
RETURN FREQUENCY = 5 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
Subarea
Descr.
Runoff
IC'
Area
acres
Tc
(min)
Wtd.
IC'
Adj. I
'C' in/hr
Total
acres
Peak Q
(cfs)
PERVIOUS 0.300
IMPERVIOUS 0.900
0.04
0.45
10.00 0.851 0.851 7.690 0.49 3.21
Quick TR-55 Ver.5.44
Executed: 14:15:32
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA D
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.04
0.45
Tc
(min)
Wtd.
'C'
10.00 0.851
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.851 8.630
Total
acres
0.49
Peak Q
(cfs)
3.60
Quick TR-55 Ver.5.44
Executed: 14:15:32
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA D
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.04
0.45
Tc
(min)
Wtd.
'C'
10.00 0.851
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.851 9.860
Total
acres
0.49
Peak Q
(cfs)
4.11
Quick TR -55 Ver.5.44
Executed: 14:15:32
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA D
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.04
0.45
Tc
(min)
Wtd.
'C'
10.00 0.851
RETURN FREQUENCY = 50 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.851 10.860
Total
acres
0.49
Peak Q
(cf s)
4.53
Quick TR -55 Ver.5.44
Executed: 14:15:32
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA D
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0 .300
I MPERVIOUS 0.900
Area
acres
0 .04
0.45
Tc
(min)
Wtd.
'C'
10.00 0.851
RETURN FREQUENCY = 100 years
'C' adjustment , k = 1
Adj. 'C ' = Wtd.'C' x 1
========================= ========
Adj . I
'C' in/hr
0. 851 11. 640
Total
acres
0.49
Peak Q
(cf s)
4.85
Quick TR-55 Ver.5.44
Executed: 14:16:07
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA E
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.04
0.04
Tc
(min)
Wtd.
I C'
10.00 0.600
RETURN FREQUENCY = 5 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C ' in/hr
0.600 7.690
Total
acres
0.08
Peak Q
(cfs)
0.37
Quick TR-55 Ver.5.44
Executed: 14:16:07
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA E
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.04
0.04
Tc
(min)
Wtd.
'C'
10.00 0.600
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.600 8.630
Total
acres
0.08
Peak Q
(cf s)
0.41
Quick TR-55 Ver.5.44
Executed: 14:16:07
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA E
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.04
0.04
Tc
(min)
Wtd .
'C'
10.00 0.600
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.600 9.860
Total
acres
0.08
Peak Q
(cfs)
0.47
Quick TR-55 Ver.5.44
Executed: 14:16:07
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA E
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
'C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.04
0.04
Tc
(min)
Wtd.
'C'
10.00 0.600
RETURN FREQUENCY = 50 years
'C ' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.600 10.860
Total
acres
0.08
Peak Q
(cf s)
0.52
Quick TR-55 Ver.5.44
Executed: 14:16:07
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA E
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.04
0.04
Tc
(min)
Wtd.
IC'
10.00 0.600
RETURN FREQUENCY = 100 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
Adj. I
'C' in/hr
0.600 11.640
Total
acres
0.08
Peak Q
(cf s)
0.56
Quick TR-55 Ver.5.44
Executed: 14:17:28
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA F
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
'C'
0.300
Area
acres
0 .02
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 5 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 7.690
Total
acres
0.02
Peak Q
(cfs)
0.05
Quick TR-55 Ver.5.44
Executed: 14:17:28
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA F
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
RETURN FREQUENCY = 10
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
years
Subarea
Descr.
PERVIOUS
Runoff
IC'
0 .300
Area
acres
0 .02
Tc
(min)
Wtd.
'C'
10.00 0.300
=========================
Adj. I
'C' in/hr
0.300 8.630
Total
acres
0 .02
Peak Q
(cfs)
0.05
Quick TR-55 Ver.5.44
Executed: 14:17:28
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA F
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr .
PERVIOUS
Runoff
'C'
0 .300
Area
acres
0 .02
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 9.860
Total
acres
0.02
Peak Q
(cfs)
0.06
Quick TR-55 Ver.5.44
Executed: 14:17:28
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA F
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
'C'
0.300
Area
acres
0.02
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 50 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 10.860
Total
acres
0.02
Peak Q
(cf s)
0.07
Quick TR-55 Ver.5.44
Executed: 14:17:28
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
AREA F
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
PERVIOUS
Runoff
'C '
0.300
Area
acres
0.02
Tc
(min)
Wtd.
'C'
10.00 0.300
RETURN FREQUENCY = 100 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.300 11.640
Total
acres
0.02
Peak Q
(cfs)
0.07
Quick TR-55 Ver.5.44
Executed: 14:18:53
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
TOTAL AREA G TO BEE CREEK
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour , A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
, C'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
5.32
2.39
Tc
(min)
Wtd.
'C '
10.00 0.486
RETURN FREQUENCY = 5 years
'C' adjustment , k = 1
Adj. 'C' = Wtd .'C' x 1
========================= ========
Adj. I
'C' in/hr
0.486 7.690
Total
acres
7.71
Peak Q
(cf s)
28.81
Quick TR -55 Ver.5.44
Executed: 14:18:53
S/N:l315430080
11-25 -1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
TOTAL AREA G TO BEE CREEK
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
5.32
2.39
Tc
(min)
Wtd.
IC'
10.00 0.486
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.486 8.630
Total
acres
7.71
Peak Q
(cf s)
32.34
Quick TR-55 Ver.5.44
Executed: 14:18:53
S/N:l315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
TOTAL AREA G TO BEE CREEK
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0 .300
IMPERVIOUS 0.900
Area
acres
5.32
2.39
Tc
(min)
Wtd.
'C'
10.00 0.486
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.486 9.860
Total
acres
7.71
Peak Q
(cfs)
36.95
Quick TR-55 Ver.5.44
Executed: 14:18:53
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
TOTAL AREA G TO BEE CREEK
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = ad j * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
5.32
2 .39
Tc
(min)
Wtd.
I c I
10.00 0.486
RETURN FREQUENCY = 50 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
Adj. I
'C' in/hr
0.486 10.860
Total
acres
7.71
Peak Q
(cf s)
40.69
Quick TR-55 Ver.5.44
Executed: 14:18:53
S/N:1315430080
11-25-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
TOTAL AREA G TO BEE CREEK
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
5.32
2.39
Tc
(min)
Wtd.
IC'
10.00 0.486
RETURN FREQUENCY = 100 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.486 11.640
Total
acres
7.71
Peak Q
(cf s)
43.62
BEE CREEK CROSS SECTION
COLLEGE ST A TION LIBRARY -DESPERADO OIL CO., INC.
BEE CREEK CROSS SECTION WORK SHEET
Worksheet for Irregular Channe l
Project Description
Project File c :\haestad\fmw\csl.fm2
Worksheet BEE CREEK CROSS SECTION
Flow Element Irregular Channel
Method Manning 's Formula
Solve For Water Elevation
Input Data
Channel Slope 0.002000 ft/ft
Elevat ion range : 265 .00 ft to 280 .00 ft .
Stat ion (ft)
0.00
Elevation (ft)
278 .00
276 .00
274 .00
272 .00
272 .00
272 .00
270 .00
268 .00
266 .00
265 .00
266 .00
268 .00
270 .00
272 .00
272 .70
274 .00
276 .00
278 .00
280 .00
Start Station
75 .00
11 0.00
152 .00
192 .00
215 .00
245 .00
260 .00
265 .00
270 .00
275 .00
280 .00
295 .00
328 .00
345 .00
392 .00
448 .00
485 .00
532 .00
0.00
110 .00
215.00
245 .00
295 .00
328.00
345 .00
392 .00
485 .00
Discharge 3,001 .00 cf s
Results
Wtd . Mannings Coefficient
Water Surface Elevation
Flow A rea
Wetted Perimeter
Top W idth
Height
Critical Depth
Critica l Slope
Velocity
Velocity Head
Specific Energy
Froude Number
Flow is subcritica l.
0.020
273 .28
531 .87
242 .14 ft
240.73 ft
8.28 ft
272 .62 ft
0.005065 ft/ft
5.64 ft/s
0.49 ft
273 .77 ft
0.67
End Station
110 .00
215 .00
245 .00
295 .00
328 .00
345 .00
392 .00
485.00
532 .00
Roughness
0.040
0.010
0.040
0.030
0.040
0.010
0.040
0.010
0.040
11/25 /96
02:33 :02 PM Haestad Methods , Inc . 37 Brooks ide Road Waterbury , CT 06708 (203) 755 -1 666
FlowMaster v5.1 3
Page 1 of 2
11/25/96
02 :33 :02 PM
BEE CREEK CROSS SECTION WORK SHEET
Worksheet for Irregular Channel
Haestad Methods , Inc . 37 Brookside Road Waterbury , CT 06708 (203) 755-1666
FlowMaster v5.13
Page 2 of 2
BEE CREEK CROSS SECTION TABLE
Rating Table for Irregular Channel
Project Description
Project File c :\haestad\fmw\csl.fm2
Worksheet BEE CREEK CROSS SECTION
Flow Element Irregular Channel
Method Manning's Formula
Solve For Water Elevation
Constant Data
Channel Slope 0 .002000 ft/ft
Input Data
M inimum Maximum
Discharge 3,000.00 5 ,000.00
Rating Table
Discharge
(cfs)
---r; 3 ,000.00
3 ,500.00
4 ,000 .00
4 ,500.00
___.. 5 ,000.00
Wtd. Mannings
Coefficient
0 .020
0 .020
0 .019
0 .019
0 .019
Increment
500.00 cfs
Water Surface
Elevation
(ft}
273.28
273.51
273.73
273 .93
274 .10
( Cl -• 4l~~ ..,>b-ftoV")
Velocity
(ft/s)
5 .64
5 .93
6.19
6 .43
6 .67 ~loo ~.h .. 1'1~Ti:
~~ ~~ys1s.,
lll.-b.
11/25/96
02:29 :06 PM Haestad Methods , Inc . 37 Brooks ide Road Waterbury , CT 06 708 (203) 755 -1 666
FlowMaster v5 .13
Page 1 of 1
.
' . ., '
' . I ' >
•." ' -..
;
'••
-t,. ~ , .
BEE CREEK CROSS SECTION
Cross Section for Irregular Channel
Project Description
Project File c :\haestad\fmw\csl.fm2
Worksheet BEE CREEK CROSS SECTION
Flow Element Irregular Channel
Method Manning 's Formula
Solve For Water Elevation
Section Data
Wtd . Mannings Coefficient 0.020
Channel Slope 0.002000 ft/ft
Water Surface Elevation 273 .28 ft
Discharge 3,001.00 cfs <___, t:J . a.-T --------------------------~ ~ ~~ ~ oc: ve c..c::>Pm~
280 .0
278.
276 .0
g 274 .0
§ 272 .0
~ > a.>
[Li 270 .0
268 .0
266.0
--------r--------T--------1--------,--------,---------r--------r--------T--------T--------,------, I I I I I I I I I I I
I I I I I I I I I I I
I I I I I I I I I I
-------~--------+--------+--------~--------~---------~--------~--------·--------·------~--------~ I I I I I I I I I I I
I I I I I I I I I I I
I I I I I I I I I I --------L------i--------i--------~--------~---------L--------L--------L---------------~--------~ I I I I I I I I I I I
I I I I I I I I I I I
I I I I I I I I I I
I I I I I I I I I --------r--------T ------,--------,-----------------r--------r------T--------T--------,--------, I I I I I I
I I I W'I I I I I I
I I I I I I I I I I
--------~--------+--------· ... ~~~~i---8-----~---------~------~--------·--------+--------~--------~ I I I I I I I I I I
I I I I I I I I I I
I I I I I I I I I I I
--------L--------i--------~--------~---------------L--------L--------i--------~--------~ I I I I I I I I I
I I I I I I I I I
I I I I I I I I I I
I I I I I I I I I I I --------r--------T--------1--------,--------,----r--------r--------T--------T--------,--------, I I I I I I I I I I I
I I I I I I I I I I I
I I I I I I I I I I I
--------~--------+--------+--------~--------~-------~--------~--------·--------+--------+--------~ I I I I I I I I I I I
I I I I I I I I I I I
I I I I I I I I I I I 264 .0-----------..._ ______ ..._ ______ ....._ ______________ _._ ______ _._ ______ __,, ______ __,,ji.,_ ______________ .._ ____ ___,
11/25/96
02 :30 :30 PM
0 .0 50 .0 100 .0 150 .0 200 .0 250 .0 300 .0 350 .0 400 .0
Station (ft)
Haestad Met hods , Inc. 37 Broo kside Road Waterbury , CT 06 708 (203) 755-1666
450 .0 500 .0 550 .0
FlowMaster v5 .13
Page 1 of 1
BEE CREEK CROSS SECTION -POST DEVEL.
Worksheet for Irregular Channel
Project Description
Project File c:\haestad\fmw\csl.fm2
Worksheet BEE CREEK CROSS SECTION
Flow Element Irregular Channel
Method Manning's Formula
Solve For Water Elevation
Input Data
Channel Slope 0.002000 ft/ft
Elevation range : 265 .00 ft to 280.00 ft.
Station (ft)
0.00
Elevation (ft)
278 .00
276 .00
274 .00
272 .00
272 .00
272.00
270 .00
268.00
266.00
265 .00
266.00
268.00
270.00
272.00
272.70
274 .00
276 .00
278.00
280 .00
Start Station
75.00
110.00
152.00
192.00
215 .00
245.00
260 .00
265.00
270.00
275 .00
280 .00
295 .00
328.00
345 .00
392.00
448 .00
485 .00
532 .00
0 .00
110 .00
215.00
245.00
295 .00
328.00
345 .00
392 .00
485.00
Discharge 3,019.60 cf s
Resu ts
d. Mannings oe 1c1ent
Water Surface Elevation
Flow Area
Wetted Perimeter
Top Width
Height
Critical Depth
Critical Slope
Velocity
Velocity Head
Specific Energy
Froude Number
Flow is subcritical.
0. 2
273.29
534.11 ft2
242 .67 ft
241 .26 ft
8.29 ft
272.63 ft
0.005062 ft/ft
5.65 ft/s
0.50 ft
273 .78 ft
0.67
End Station
110.00
215 .00
245 .00
295.00
328.00
345 .00
392.00
485 .00
532 .00
Roughness
0.040
0.010
0.040
0.030
0.040
0.010
0 .040
0.010
0.040
11/25/96
02 :37 :10 PM Haestad Methods , Inc . 37 Brookside Road Waterbury , CT 06708 (203) 755-1666
FlowMaster v5.13
Page 1 of 2
11/25/96
02 :37 :10 PM
BEE CREEK CROSS SECTION -POST DEVEL.
Worksheet for Irregular Channel
Haestad Methods , Inc. 37 Brookside Road Waterbury , CT 06708 (203) 755-1666
FlowMaster v5 .13
Page 2 of 2
BEE CREEK CROSS SECTION -POST DEVE L.
Cross Section for Irregular Channel
Project Description
Project File c:\haestad\fmw\csl.fm2
Worksheet BEE CREEK CROSS SECTION
Flow Element
Method
Irregular Channel
Manning's Formula
Water Elevation Solve For
Section Data
Wtd . Mannings Coefficient 0.020
Channel Slope 0.002000 ft/ft
Water Surface Elevation 273.29 ft ~ ~D_is_c_h_a~rg~e ______________ 3~,0_1_9_.6_o ____ c_ra_____ ~ Por?i ~
280.0
278 .
276 .0
g 274 .0
§ 272 .0 ~ > <ll iii 270 .0
268 .0
266 .0
--------r--------T--------,--------,--------,---------r--------r--------T--------T--------,------, I I I I I I I I I I I
I I I I I I I I I I I
I I I I I I I I I I
-------~--------+--------+--------~--------~---------~--------~--------+--------+------~--------~ I I I I I I I I I I
I I I I I I I I I I
I I I I I I I I I I --------L------i--------~--------~--------~---------L--------L--------L---------------~--------~ I I I I I I I I I I I
I I I I I I I I I I I
I I I I I I I I I I
I I I I I I I I I --------r--------T ------,--------,-----------------r--------r------T--------T--------,--------, I I I I I I
I I I WI I I I I I
I I I I I I I I I I
--------~--------+-------->t---------~~----~---------~------~--------+--------+--------~--------~ I I I I I I I I I I
I I I I I I I I I I
I I I I I I I I I I I
--------L--------i--------~--------~---------------L--------L --------i--------~--------~ I I I I I I I I I
I I I I I I I I I
I I I I I I I I I I
I I I I I I I I I I I --------r--------T--------,--------,--------,----r--------r--------T--------T--------,--------, I I I I I I I I I I I
I I I I I I I I I I I
I I I I I I I I I I I
--------~--------+--------+--------~--------~-------~--------~--------+--------+--------~--------~ I I I I I I I I I I I
I I I I I I I I I I I
I I I I I I I I I I I 264 .0.._ ______ ..._ ______________________________________ __.. ________________ ...._ ______ .._ ______ ..._ ____ ____,
11 /25/96
02 :37 :43 PM
0 .0 50 .0 100 .0 150 .0 200 .0 250.0 300.0 350.0 400.0
Station (ft)
Haestad Meth ods , Inc. 37 Brookside Road Wate rbury , CT 06708 (203) 755 -1666
450 .0 500 .0 550 .0
FlowMaste r v 5.13
Page 1 of 1
DRAINAGE STRUCTURES
COLLEGE STATION LIBRARY -DESPERADO OIL CO ., INC.
18" RCP PIPE FROM DS-1
Rating Table for Circular Channel
Project Description
Project File c :\haestad\fmw\csl.fm2
Worksheet CSL-1
Flow Element
Method
Solve For
Constant Data
Circular Channel
Manning's Formula
Discharge
Mannings Coefficient
Depth
0.013
1.50 ft
18 .00 in Diameter
Input Data
Minimum Maximum
channel slope 0.001000 0.010000
Rating Ta61e
channel
Slope Discharge Velocity
(ft/ft) (cfs) (ft/s)
Increment
0.001000 ft/ft
0.001000 3.32 1.88 L~ PU.CG ~t-S'~ 0 .002000 4.70 2 .66
()Jw 0 .003000 5.75 3 .26 ~~~6 f4!:,~, ON
~Sf)O\U.Do . S't1c. 5w;e )0 .004000 6 .64 3 .76 ou~
0 .005000 7.43 4 .20
hc.av. 0.006000 8.14 4 .60
0 .007000 8 .79 4 .97 Rs,sr ~o D 0 .008000 9 .39 5.32
0 .009000 9 .96 5.64 ~:: d..~S.l< 1. 2£j = C.o~ 0 .010000 10.50 5.94 cFs
01/02/97
04 :04 :34 PM Haestad Methods , Inc. 37 Brookside Road Waterbury , CT 06708 (203) 755-1666
FlowMaster v5 .13
Page 1 of 1
Quick TR -55 Ver.5.44
Executed: 10:46:44
S/N:1315430080
11 -12-1996
COLLEGE STATION LIBRARY
DESPARADO OIL COMPANY
INLET DS-1 21,230 S.F.
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0 .900
Area
acres
0.04
0.45
Tc
(min)
Wtd.
I c I
10.00 0.851
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
Adj. I
'C' in/hr
0.851 8.630
Total
acres
0.49
Peak Q
(cf s)
3.60
Quick TR-55 Ver.5.44
Executed: 10:46:44
S/N:1315430080
11-12-1996
COLLEGE STATION LIBRARY
DESPARADO OIL COMPANY
INLET DS-1 21,230 S.F.
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
I c I
PERVIOUS 0 .300
IMPERVIOUS 0.900
Area
acres
0.04
0.45
Tc
(min)
Wtd.
'C'
10.00 0.851
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
Adj. I
'C' in/hr
0.851 9.860
Total
acres
0.49
Peak Q
(cfs)
4.11
24" RCP PIPE FROM DS-2
Rating Table for Circular Channel
Project Description
Project File c :\haestad\fmw\csl.fm2
Worksheet CSL-OUTFALL PIPE
Flow Element Circular Channel
Method Manning's Formula
Solve For Channel Depth
Constant Data
Mannings Coefficient
Channel Slope
Diameter
Input Data
Minimum
Discharge 21.00
Rating Ta51e
0.013
0.018780 ft/ft
24.00 in
Maximum
31 .00
Discharge Depth Velocity
(cfs) (in) (ft/s)
21 .00 10.60
23 .00 15.4 10.81
25.00 16.3 10 .98
27 .00 17.3 11 .12
29 .00 18.4 11 .21
31 .00 19 .7 11 .25
Increment
2.00 cfs
017 = l i>. "ZC? cE ( . z 5
~-Z> ::: '2D .BS@ t :zs
ezc..o
>~zi:,
Co"-'?lt?CV<-0 (.~ ~l~Y"> oF
S!nuCTuvx::) •
01/02/97
03:21 :31 PM Haestad Methods , Inc . 37 Brookside Road Waterbury , CT 06708 (203) 755-1666
-:: -z ?,€!:::>(
=-zc.C(O
FlowMaster v5 .13
Page 1 of 1
Quick TR-55 Ver.5.44
Executed: 11:35:12
S/N:1315430080
11-12-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
INLET DS-2 TOTAL DRAINAGE AREA
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
IC'
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.48
2.19
Tc
(min)
Wtd.
I c I
10.00 0.792
RETURN FREQUENCY = 10 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.792 8.630
Total
acres
2.67
Peak Q
(cfs)
18.25
Quick TR-55 Ver.5.44
Executed: 11:35:12
S/N:1315430080
11-12-1996
COLLEGE STATION LIBRARY
POST DEVELOPMENT CONDITIONS
INLET DS-2 TOTAL DRAINAGE AREA
* * * * * * SUMMARY OF RATIONAL METHOD PEAK DISCHARGES * * * * * *
Q = adj * C * I * A
Where: Q=cfs, C=Weighted Runoff Coefficient, I=in/hour, A=acres
adj = 'C' adjustment factor for each return frequency
Subarea
Descr.
Runoff
f c I
PERVIOUS 0.300
IMPERVIOUS 0.900
Area
acres
0.48
2.19
Tc
(min)
Wtd.
'C'
10.00 0.792
RETURN FREQUENCY = 25 years
'C' adjustment, k = 1
Adj. 'C' = Wtd.'C' x 1
========================= ========
Adj. I
'C' in/hr
0.792 9.860
Total
acres
2.67
Peak Q
(cf s)
20.85
Table
Rating Table for Circular Channel
'2-;; -L£:)' Qcp ~ f .LYJ .Lbt'O
--P-ro-j-ec_t_D_e_s-cr~ip-t-io-n--------------~
Project File c:\haestad\fmw\csl.fm2
Worksheet CSL-1
Flow Element Circular Channel
Method Manning's Formula
Solve For Discharge
Constant Data
Mannings Coefficient
Depth
0.014
1.50 ft
18.00 in Diameter
Input Data
Minimum
Channel ~lope 0.000100
Rating Table
Channel
Slope Discharge
(ft/ft) (cfs)
0.000100 0.98
0.001100 3.23
0.002100 4.47
0.003100 ~ 5.4 *
0.004100 6.25
Maximum
0.005000
Velocity
(ft/s)
0.55
1.83
2.53
3.07
Increment
0.001000 ftift
~~. 'b~~t-
~ e,
~~ ::.
~LOO :::
3.53 1..40
0.005100 6.97 3.94 ~~ /
~ >< l'b11 1Zo.P ~V'6 f.. vn. '2.~lB
~'4?D~S ~M ~~ Sit: .
11/25/96
03 :58 :43 PM Haestad Methods , Inc. 37 Brookside Road Waterbury , CT 06708 (203) 755-1666
FlowMaster v5.13
Page 1 of 1
DESPERADO OIL CO. DRAINAGE PLAN
COLLEGE STATION LIBRARY -DESPERADO OIL CO., INC.
1900 PERV
1480 IMPERV
s T
'7G.10 .
E
8.30 SF f 530 PERY
• 12300 IMPERV
G
21 ,230
R
1770 PERY
19,460 IMPERV
A D
,. ...
,
"·"'
N G
,
77 . .1 1
--.... ~-
3690 PERY·~ ....... --
37,980 IMPERV ---.:::::::::::.::::
p L A N
100 y
NO.
1
2
3
4
5
6
7
8
9
10
11
PRELIMINARY ENGINEER'S ESTIMATE*
COLLEGE STATION LIBRARY
WATER IMPROVEMENTS
DESCRIPTION UNIT QTY . UNIT COST
12" P.V.C . C-900 Water Line L.F . 800 $18.00
12" Gate Valve & Box E.A. 2 $800.00
Std. F.H. & Assembly (Type 2) E.A . 2 $1,500.00
12" 22 1 /2 Deg MJ Bend E.A. 2 $250.00
12" MJ Plug E.A. 1 $250.00
12" Ductile Pipe L.F. 16 $28.00
12"x12"x8" MJ Tee E.A. $200.00
8" MJ Plug E.A . 1 $250.00
Trench Safety L.F. 800 $2.00
Revegetation (Seeping) S.Y. 350 $0.25
Connect to Exist . 12" Water Line L.S. $850 .00
TOTAL WATER IMPROVEMENTS COST
CONTINGENCY (10%)
TOTAL PROJECT COST
*This preliminary estimate is based upon unapproved
construction plans, and should not be used for
bidding purposes.
Page 1
TOTAL COST
$14,400.00
$1,600.00
$3,000.00
$500 .00
$250.00
$448.00
$200 .00
$250 .00
$1,600.00
$87 .50
$850.00
$23 , 185.50
$2 ,318.55
$25,504.05
UDG Urban Design Grou1>
P .O. Box 10153 College Station, Texas 77842 Phone : (409) 696-9653 Fax : (409) 696-9752
TRANSMITTAL LETTER
TO : :air ~ e-)~ FROM: ~~,. "'<::'.:.-
please find : i:i-attached
D original sent Yi a mail
D pl ans
D specifications
D other
D
D
D
D
rv-
as requested
for your information
for your files
for your approval
for yo ur reyiew
COMMENTS : <:?1'1 C:::... .Se:A-o.P p ~~ ~
______ -,-;,~. x.)c::> .5 ~__:$ oF ~ f: l'""'I c:;:s
On.z:... e r~~~ ~~·r..-.-..,,.f.c--