HomeMy WebLinkAboutSWP272809 ly
'± ReiE m Address
C'Ay.C;lerk's Office
`+ O&Renton
1055 uth Grady Way 2001 Rentc>ri,VGA 805S 121700 7
Y
CITY OF RENTON BS 9 00�
,;' Mrf.... �> PAGE 001 OF 002
12/1 4'14
'(ING7COUNTY, WA
BILL OF SALE Ptoperty Ta'u Parcel Number:D Z,3a5-4/13, l
Project File#L'`.�90 Street In 's ho � ddress
Refetence Numb,")of Documents assigned or released Addrtronal'reference numbers are on page
G#�antor{s) .. Gnintee(s):
of Renton,a Municipal Corporation
2:..:,: ,die E'✓'
e•. The Granto ,;as riamod i+e,for,and in consideration of mutual benefits,hereby grants,bargains,sells and delivers to
cis the Grantee,as;tt vexha:fotlowing described personal property-
WATER SYSTEM: w Ceti th SizeD ,:L F of
3 '� D. Water Main
.�_ ��
„L P`0•... o D.1 Water Main
F+ f Water Main
each 4f --� Gate Valves
cy tis oseh`ofr',;' -(o Gate Valves
'� 3 `'each of:' �ti`e.HYdrg'ttt,,�ssembhes
o SANITARY SEWER SYSTEM: Len h
o LF.of
.........:.. .
'!:r �' .f �' Sewer Main
N L,F of " ;•' Sewer Main
L F.of -- "` Sewer Main
each of " Dtame=ter Manholes
each of Diameter Manholes
each of Diameter Manholes
STORM DRAINAGE SYSTEM: Length Size Type
4/2 7 L F of (2 GPCP Storm Line
LY of Storm Line
L F.of Storm Line
each of —, --" Storm Inlet/Outlet
each of �7u " Storm Catch Basin
each of Manhole
STREET IMPROVEMENTS: (Inelu ;Gutter,Sidewalk,Asphalt Pavement)
Garb,Gutter,Sidewalk
Asphalt Pavement: !p SY or L F of Width
STREET LIGHTING:
#of poles /
By this conveyance,Grantor will warrant'e`nd.defend the sale•liereby.made urito„the Grantee against all and every person
or persons,whomsoever,lawfully claiming or to`clatm tho>sauae This cotveyace shall bind the heirs,executors,
administrators and assigns forever #"" 001
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' Form 84 0001/bh
S WHEREO i ha hereunto set my hand and seal the day and year as written below
a , IVIDU4L FORM OFACICNOWLEDGMENT
Notary Seal, STATE WASHIVGTON )SS
IV �'` 'Ct7 TY'OP O• UPI. KTI`l: )
�• ;GOW` a t ceifyth ai I;knbw or have satTiactory evidence that
�p T A R y �; signed this instrument and
ablciwvriledged it;3 ° ie/th6a free and voluntary act for the uses and purposes
PUBLIC :mentioned:ut the its n
39 ty4.V G �r
6�.
' f=�'j%.� S;�r•'��� Notary Public i fir te o&Vasht on
Notary(Print) `r t
Zappointment expires:ed.� Q • --d
R$SE ATIV4FORMOFACKNOWLEDGMENT
Notary Seal must be within box: `;$TA1'$:OF:WASHINGTON )SS
r� ....•%�CQUNTX`'OP,..;:KINC: ..-.�,..,
I certi at;T .'w:or have sat�s%cto evidence that Isd-t-L✓t��
ora '���nuuuy�� ry II
,a�.Q+ •� .
P�•NOYq�A��. ` :' signed this instrument,on oath
ca +,` :Gpitµ F tA•,- 4� stated that h they vitivVere::suttiQnzed:tag wCCte the tstrument and
acknowledg e''. and
to.be tke fite and'voluntary act of such
vt : ter• w : * ,..."
the party/parties for uses and p t>enitioried xri instrument
cv N PUBLIC •'Z
�Ul 4 O
Y o.Z •��.� Not Publ c in r e S of
+•,,Fpfi WASH\���,• mY
C=) 104 Notary(Print) L C
c-r My appointment expires
Dated Q
CORPORATe FORM OF ACKNOWLEDGMENT
Notary Seal must be within box STATE OF WASHINGTON )SS
COUNTY OP KING )
On this day of 19 ,before me personally appeared
to me known to
of the corporation that
executed the within instrument,and acknowledge the said instrument to be the free
and,voluntary act and deed of said corporation,for the uses and purposes therein
mentioned`,i*d-each on oath stated that he/she was authorized to execute said
n`
.-instrunient abd th8t the seal affixed is the corporate seal of said corporation
.�
Notary Pdbb6,.in afid'for the State of-Washington
Notary(Print) `
My appointment,e.
Dated
Page 2
ClibPDF - www.fastio.com
LEGAL DESCRIPTION
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' W z SHEET INDEX.' AREAS: ua x pT M m m As pm m m x nn arz w u aw�.�acumc rA
Z Ct SITE PUN TOTAL SITE AREA.0.90 ACRES(25970 SF)
Of Z W IMPERVIOUS AREA><O.J2 ACRES(13920 Sr) xr mnae u x K r/.n x x. n x sr r�rx x er r/n srcrev;.loenaw uv
Q Q Ck C2 STORM DRAIN-GRADING PUN
J_j C3 NOTES awm s[.rr.r er nva,:wvabTrr maeH As roue i \. /
EL d C! STORM DRAW PROFILE xpMRc Ar A avn m rnr HArM a x snaasr taRAa G:ra s..�Aac.rvAE[a avm'e' 2^ �/
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~ C8 WATER PLAN wars rAc mun ramwe<smsmsr. '�' E s
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N C I I LVMNG DETAILS EROSION CONTROL NOTES
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r..x �'f-22Si SANCar,sF[�v[[T LY
CHECKED f'OR COMPLIANCE
�( J TO CTtt STANDARDS
--4a N.E. 9TH PLACE 0
I Ooe
L Lbte
9th D.M
bCAMMFD DFC l A E99 Co;k-,Zzpm/
ROLL 161 1 6 5
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Short Plat'(SHPL#
REQUEST FOR PROJECT# Pnhm•Plat (PP#
CAG#
To: Technical Services Date WO# g d5 3 g!•i Green#
From: Plan Review/Project Manager
Project Name C a m 6) Y i 9 P /gyp 2 �� f S
(7o chaar==max)
Description of Project: L77 I-- L1+- C2 -, l��
Circle Size of Waterline: 8" 0" 12" Circle One: <j ew or Extension
Circle Size of Sewerline: 8" 10" 12" C61e One: New or Extension
Circle Size of Stormline: �17) IS" 18" 24" Circle One: Newt or Extension
Address or Street Name(s) _ 5 Z O lV E fig' 1
DvlpdContractor/OwnerCnsllt : f 0 u y 3'> a E h!E�1 ''--z
( (70 diaracccrs max)
Check each discipline involved in Project Ltr Drwg #of sheets per discipline
❑ ❑
C ) C2 C4:
O Trans-Storm !ZS�orm/,�rP� F�s�'�a/r>°kA.�.;'s%r, f. C 1
(Roadway/Drainage) (off site improvcmcnts)(ind m udc basin name) (include TESC shccu)
❑ Transportation (signali7ad0n,Chumclization,lighting) ❑ ❑ 4 c- ( + `
C�rl> C—L,-4.x 4- std�w �llL
❑ Wastewater /3a 5 i k, .O ❑ C ` ' C(z)
Sanitary Scwer Main(indude basin name) /
❑ ❑ L 3 + C
❑ Water situ alvcs�lydran�s)
(Include composite&Horizontal LL-I Sleets)
❑ Suface Water ❑ ❑
Improvements (CLP ONLY)(includc basin name)
TS Use Oniy Tf-g-o_m9 F'.ago q 1
-r�o- q►- a $01 -r-AEo9
w1NP - a-7-290 sT�-
vJ�R- a"?-ag0°i vV-a8a�t
'� P Lf,-911-A9 Oct -
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TYPICAL PAVEMENT&EXTRUDED CURB DETAIL
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Z O Z X-SECTION DETAIL
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m O N ,. V W...R i CMPACRC s A1CnMA(.1.ANo-AS AS W=tYRxRYa W sal CGYa1eGYs r
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NE. 97H PL, ROAD&UnWY PROFILE
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MR APPROVAL
31.1E 11.'Cs'V �• as 1NVFL•7a6lai /��/1°.J �,d
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BY CCII tWNEUM i 9'M
^Y no-vo-Teoy wwla=o DEC 1E 939 or.R-°°9e3
ROLL 11, 14 7
STORM DRAINAGE REPORT
FOR
JEFF RIEKER
EDMONDS AV. &NE 9TH PLACE
RENTON, WASHINGTON
STORM DRAINAGE REPORT
FILE NO. 917-006-981
PREPARED BY
TOUMA ENGINEERS
6632 SOUTH 191ST PLACE, SUITE E-102
KENT, WA. 98032
(425)251-0665
January, 1999
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C9900940 " 41 ZeQ9
3
1. PROJECT OVERVIEW
The project involves one parcel of land of about 0.6 acres. The property is located North of the City of
Renton in the NW Quarter of Section 9, Township 23 North, Range 5 East, W.M. It is bounded on the
South by NE 9th Place, on the East and North by appartment. pildings, and along the West boundary exist
single family parcels. Access to the property will be via NE 9 , along which street improvements will be
made, see plans.
The project area slopes from 4%to 10%to the Southwest. According to the USGS , see soils map,the site
is made up of Ragnar/Indianola soil, which is generally fine sandy loam over olive-brown loamy sand. The
existing ground cover consists of scotch broom, grasses, and a few large trees. Not any upstream areas
contribute to the runoff from this site.
SEE ---- MAP — 1 9w.M
�" -- - — 625 _ ----
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4
II, CORE REQUIREMENTS
Core Requirement#1. -Discharge at the Natural Location
The developed site runoff will collect in the bioswale,from where it will flow to the existing storm
drain under Edmonds Ave.
Core Requirement#2. -Offsite analysis
See section Ill, this report.
Core Requirement#3. -Runoff control
Water quality protection is required due to 8000 sf of new parking, see section IV. However, runoff
detention is not required because the 100 year peakflow increase is less than 0.5 cfs.
Core Requirement 94. -Conveyance system Design
The storm drainage system consists of catch basins and pipes,which have been checked for
peakflow capacity. It has been found that their capacity far exceeds the expected 100 yr. peakflow. The
roof runoff will be conveyed in 6"underground pipes. See Section V of this report for calculation of pipe
capacities.
Core Requirement#5. -Temporary erosion and sedimentation control
Temporary erosion and sedimentation control shall consist of siltfences, a construction entrance,
filter fabric over storm grates, and mulching. See plans.
Core Requirement#6. -Maintenance and operation
Maintenance involves having on-site catch basins cleared from sediments when necessary.
Core Requirement#7. -Bonds and liability N.A.
Special Requirement# 1. -Critical drainage areas N.A.
Special Requirement#2. -Compliance with an existing Master Drainage Plan(MDP) N.A.
Special Requirement#3. -Conditions requiring a MDP. N.A.
Special Requirement#4. -Adopted basin or community plans N.A.
Special Requirement#5. - Special water quality controls.N.A.
Special Requirement#6. -Coalescing plate oil/water seperators N.A.
Special Requirement#7. -Closed depressions N.A.
Special Requirement#8. -Use of lakes, wetlands or closed depressions for runoff control N.A.
Special Requirement#9. -Delineation of the 100 yr floodplain N.A.
Special Requirement#10. -Flood protection facilities for type I and type 2 streams N.A.
Special Requirement#11. -Geotechnical analysis and report N.A.
Special Requirement#12. -Soils analysis and report N.A.
5
III. OFF-SITE ANALYSIS
In existing conditions, the site surface runoff collects in a Type 11 catch basin at the intersection of 9th place
and Edmonds Av. A 15"concrete pipe then leads 500, South to 91h St. The water is then conveyed 1000'
West thru an 18" concrete pipe under 9th St. Then the runoff flows 600' South to 7tn St. in an 18"concrete
pipe, and from there to the storm drain system along Sunset Blvd. Eventually the water flows into Lake
Washington.
IV. RETENTION/DETENTION ASSESSMENT
1, AREAS SUMMARY-WHOLE PROPERTY
TABLE I : BASIN AREAS
AREA SQUARE FEET ACRES CN
DRAINAGE BASIN 25,970 1.93
DEVELOPED BASIN:
Roof,Patios 5310 0.31
Parking, Access 8620 0.10
Total Impervious 13,930 0.32 98
Landscaping 25,970— 13,930 0.28 80
= 12,040
Total 25,970 0.60
EXISTING BASIN:
Impervious 0 0.00 98
Meadow 25,970 0.60 78
Total 25,970 0.60
TABLE 2 : PEAK FLOWS
CFS EXISTING DEVPD.
100 YR 0.19 0.48
10 YR 0.10 0.33
2YR 0.03 0.20
Because the 100 yr. peakflows differ less than 0.5 cfs, detention is not required per core requirement 3
in the King Co. SWDM.
KING COUNTY, WASIIINGTON, SURFACE WATER DESIGN MANUAL
e
TABLE 3.5.2E SCS WESTERN WASHINGTON RUNOF CURVE NUMBERS
1
SCS WESTERN WASHINGTON RUNOFF CURVE NUMBERS (Published by SCS in 1982) '
1 Runoff curve numbers for selected agricultural, suburban and urban land use for Type 1 A '
rainfall distribution, 24-hour storm duration.
CURVE NUMBERS BY
HYDROLO C SOIL GROUP '
LAND USE DESCRIPTION A UB C D
f Cultivated land(1): winter condition 86 91 94 95
Mountain open areas: low growing brush and grasslands 74 82 89 92
Meadow or pasture: 65 R 85 89
i Wood or forest land: undisturbed 42 64 76 81 '
j Wood or forest land: young second growth or brush 55 72 81 86
Orchard: with cover crop 81 88 92 94
Open spaces, lawns, parks, golf courses, cemeteries,
landscaping.
good condition: grass cover on 75%
or more of the area 68 U 86 90
fair condition: grass cover on 50%
to 75% of the area 77 85 90 92
Gravel roads and parking lots 76 85 89 91
Dirt roads and parking lots 72 82 87 89
Impervious surfaces, pavement, roofs, etc. 98 9 98 98
Open water bodies: lakes, wetlands, ponds, etc. 100 100 100 100
Single Family Residential (2)
Dwelling Unit/Gross Acre % Impervious (3)
1.0 DU/GA 15 Separate curve number
1.5 DU/GA 20 shall be selected
2.0 DU/GA 25 for pervious and
2.5 DU/GA 30 Impervious portion
3.0 DU/GA 34 of the site or basin
3.5 DU/GA 38
4.0 DU/GA 42
4.5 DU/GA 46
5.0 DU/GA 48
5.5 DU/GA 50
6.0 DU/GA 52
6.5 DU/GA 54
7.0 DU/GA 56
Planned unit developments, % Impervious
condominiums, apartments, must be computed
commercial business and
Industrial areas.
(1) For a more detailed description of agricultural land use curve numbers refer to National Engineering
Handbook, Section 4, Hydrology, Chapter 9, August 1972.
(2) Assumes roof and driveway runoff is directed Into street/storm system.
(3) The remaining pervious areas (lawn) are considered to be In good condition for these curve numbers.
3.5.2-3 2/89
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Sheet1
SBU HYDROGRAPH METHOD: _
Existing Site Tc
SHEET Ts= 0.42*(L*ns)"0.8/(P2^0.5*S"0.4
L (ft) ns Z S P2 (in.)
486
24 0.24 485 0.0417 2 4.30
30 0.24 482 0.1000 2 3.62
57 0.24 480 0.0351 2 9.19
51 0.24 474 0.1176 2 5.18
T= L/(60*k*S^0.5)
L(ft) k S
CHANNEL 50 9 0.04 0.46
TIME OF CONCENTRATION 22.76 =23 min
Developed Site Tc
SHEET L(ft) ns S P2(in.) T(min.)
24 0.011 0.1 2 0.26
CONCNT. L (ft) k S
180 42 0.005 1.01
321 42 0.02 0.09
TIME OF CONCENTRATION 1.36 =1.5 min
GRASS SHEET L(ft) ns S P2 (in.) T(min.)
45 0.15 0.1 2 3.44
CONCNT. L(ft) k S
130 42 0.005 0.73
TIME OF CONCENTRATION 4.17 =4 min
Pagel
SPECIFY: F - FILE, N - NEWJOB, P - PRINT IF/OF, R - REVISE, S - STOP
100;24,3 . 9
----------------------------------------------------------------------
******************** S.C . S . TYPE-1A DISTRIBUTION ********************
********* 100-YEAR 24-HOUR STORM **** 3 . 90" TOTAL PRECIP. *********
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A( IMPERV) , CN( IMPERV) , TC FOR BASIN NO. 1
0. 596 , 78,0,98,23
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
. 6 . 6 78. 0 . 0 98 . 0 23 . 0
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
. 19 7 . 83 3894
ENTER [d: ] [path)filename[ . ext) FOR STORAGE OF COMPUTED HYDROGRAPH:
636BX100.HYD
SPECIFY: C - CONTINUE, N - NEWSTORM, P - PRINT, S - STOP
C
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A( IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 2
0. 276,80,0. 320,98,4
DATA PRINT-OUT:
AREA.(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
. 6 . 3 80 .0 . 3 98. 0 4. 0
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
. 48 7 . 67 6222
ENTER [d: ] [path]filename[ . ext] FOR STORAGE OF COMPUTED HYDROGRAPH:
636DV100 .HYD
SPECIFY: C - CONTINUE, N - NEWSTORM, P - PRINT, S - STOP
1
S .C..S. TYPE-lA RAINFALL DISTRIBUTION
ENTER: FREQ(YEAR) , DURATION(HOUR) , PRECIP(INCHES)
10_, 24, 2 . 9
----------------------------------------------------------------------
******************** S .C. S . TYPE-1A DISTRIBUTION ********************
********* 10-YEAR 24-HOUR STORM **** 2 . 90" TOTAL PRECIP. *********
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A( IMPERV) , CN( IMPERV) , TC FOR BASIN NO. 1
0 . 596, 78,0,98,23
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
. 6 . 6 78. 0 . 0 98. 0 23. 0
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
. 10 7 . 83 2282
ENTER [d: ] [Path]filename[ . ext] FOR STORAGE OF COMPUTED HYDROGRAPH:
636EX10.HYD
SPECIFY: C - CONTINUE, N - NEWSTORM, P - PRINT, S - STOP
C
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN( IMPERV) , TC FOR BASIN NO. 2
0. 276,80,0 . 320,98,4
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
. 6 . 3 80.0 . 3 98. 0 4. 0
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
. 33 7 . 67 4278
ENTER [d: ] [Path]filename[ .ext] FOR STORAGE OF COMPUTED HYDROGRAPH:
636DV10 .HYD
SPECIFY: C - CONTINUE, N - NEWSTORM, P - PRINT, S - STOP
1
S.C.S. TYPE-1A RAINFALL DISTRIBUTION
ENTER: FREQ(YEAR) , DURATION(HOUR) , PRECIP( INCHES)
2 ;')4, 2
-• ------------------------------------------------------------------
**ham**************** S.C . S. TYPE-1A DISTRIBUTION ********************
********* 2-YEAR 24-HOUR STORM **** 2 . 00" TOTAL PRECIP. *********
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN( IMPERV) , TC FOR BASIN NO. 1
0 . 596,78,0, 98,23
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
. 6 . 6 78. 0 . 0 98 . 0 23 . 0
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
. 03 8. 00 1045
ENTER [d: ] [Path]filename[ .ext] FOR STORAGE OF COMPUTED HYDROGRAPH:
636EX2 .HYD
SPECIFY: C - CONTINUE, N - NEWSTORM, P - PRINT, S - STOP
C
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A( IMPERV) , CN( IMPERV) , TC FOR BASIN NO. 2
0 .276,80,0. 320,98,4
DR . PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
. 6 . 3 80 . 0 . 3 98. 0 4. 0
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
. 20 7 . 67 2625
ENTER [d: ] [Path]filename[ . ext] FOR STORAGE OF COMPUTED HYDROGRAPH:
636DV2 .HYD
SPECIFY: C - CONTINUE, N - NEWSTORM, P - PRINT, S - STOP
6
IV-b. BIO SWALE DESIGN
Bottom width=6.3 ft.
3:1 side slopes
longitudiunal slope=2%
length= 100 ft
constructed Swale depth= 1.17 ft
Respective Calculation Printouts:
1. 2001f design norm, design parameters solving bottom width
2. 100 if swale: same design water surface area, solving for required topwidth by iterating bottom
width
3. solve for 2Yr depth with actual swale parameters
4. solve for 100 Yr depth with actual swale parameters
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name: BIOSWALE-DESIGN
Comment: BOTTOM WIDTH - 200 LF
Solve For Bottom Width
Given Input Data:
Left Side Slope. . 3 . 00 :1 (H:V)
Right Side Slope. 3 . 00 : 1 (H:V)
Manning' s n. . . . . . 0 . 350
Channel Slope. . . . 0 . 0200 ft/ft
Depth. . . . . . . . . . . . 0 . 33 ft
Discharge. . . . . . . . 0 . 20 cfs
Computed Results :
Bottom Width. . . . 1 . 67 ft
Velocity. . . . . . . . . 0 . 23 fps
Flow Area. . . . . . . . 0 . 88 sf
Flow Top Width. . . 3 . 65 ft
Wetted Perimeter. 3 . 76 ft
Critical Depth. . . 0 . 07 ft
Critical Slope. . . 4. 5006 ft/ft
Froude Number. . . . 0. 08 (flow is Subcritical)
Open Channel Flow Module, Version 3 . 4 (c) 1991
Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name : BIOSWALE-DESIGN-100
Comment : BOTTOM WIDTH - 100 LF
Solve For Depth
Given Input Data:
Bottom Width. . . . . 6 . 30 ft
Left Side Slope. . 3 . 00 : 1 (H:V)
Right Side Slope. 3 . 00 : 1 (H:V)
Manning' s n. . . . . . 0 . 350
Channel Slope. . . . 0 . 0200 ft/ft
Discharge. . . . . . . . 0 . 20 cfs
Computed Results :
Depth. . . . . . . . . . . . 0 . 17 ft
Velocity. . . . . . . . . 0 . 17 fps
Flow Area. . . . . . . . 1 . 15 sf
Flow Top Width. . . 7 . 31 ft
Wetted Perimeter. 7 . 37 ft
Critical Depth. . . 0 . 03 ft
Critical Slope. . . 5 . 7042 ft/ft
Froude Number. . . . 0 . 08 (flow is Subcritical)
Open Channel Flow Module, Version 3 .4 (c) 1991
Haestad Methods , Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name: BIOSWALE-2YR
Comment : ACTUAL BIOSWALE - 2 YR. FLOW
Solve For Depth
Given Input Data:
Bottom Width. . . . . 6. 30 ft
Left Side Slope. . 3 . 00 : 1 (H:V)
Right Side Slope. 3 .00 : 1 (H:V)
Manning' s n. . . . . . 0 . 080
Channel Slope. . . . 0. 0200 ft/ft
Discharge. . . . . . . . 0 . 20 cfs
Computed Results :
Depth. . . . . . . . . . . . 0 . 07 ft
Velocity. . . . . . . . . 0 . 44 fps
Flow Area. . . . . . . . 0 . 46 sf
Flow Top Width. . . 6. 72 ft
Wetted Perimeter. 6. 74 ft
Critical Depth. . . 0 . 03 ft
Critical Slope. . . 0 . 2980 ft/ft
Froude Number. . . . 0 . 30 ( flow is Subcritical)
Open Channel Flow Module, Version 3 . 4 (c) 1991
Haestad Methods , Inc. * 37 Brookside Rd * Waterbury, Ct 06708
Trapezoidal Channel Analysis & Design
Open Channel - Uniform flow
Worksheet Name : BIOSWALE-100YR
Comment : ACTUAL BIOSWALE - 100 YR.FLOW
Solve For Depth
Given Input Data:
Bottom Width. . . . . 6. 30 ft
Left Side Slope. . 3 . 00 : 1 (H:V)
Right Side Slope. 3 . 00 : 1 (H:V)
Manning' s n. . . . . . 0 . 080
Channel Slope. . . . 0 . 0200 ft/ft
Discharge. . . . . . . . 0 . 48 cfs
Computed Results :
Depth. . . . . . . . . . . . 0 . 12 ft
Velocity. . . . . . . . . 0 . 61 fps
Flow Area. . . . . . . . 0 . 79 sf
Flow Top Width. . . 7 . 01 ft
Wetted Perimeter. 7 . 05 ft
Critical Depth. . . 0 . 06 ft
Critical Slope. . . 0 . 2469 ft/ft
Froude Number. . . . 0 . 32 (flow is Subcritical)
Open Channel Flow Module, Version 3 .4 (c) 1991
Haestad Methods , Inc. * 37 Brookside Rd * Waterbury, Ct 06708
7
V. CONVEYANCE SYSTEM ANALYSIS
Applying the manning equation to full flow in pipes, table below shows the minimum slopes for a 6"
diameter pipe to convey at least the 100 yr. developed peak flow of 0.48 cfs. All of the pipes have a
greater slope, sothat they convey over 0.48 cfs.
PIPE CAPACITIES
CPEP CAPACITY Q = 1.49/n *A*R1(2/3) *S^(1/2)
FULL FLOW, SO THAT R =A/P = D/4
Showing minimum slopes for 12" pipes
n L (ft) S D (ft) R v (fps) A(sf) Q (cfs)
0.012 57 0.00016 1 0.25 0.62 0.79 0.49 smooth
wall
0.024 57 0.00065 1 0.25 0.63 0.79 0.49 single
wall
Showing minimum slopes for 6" pipes
0.012 48 0.0063 0.50 0.13 2.46 0.20 0.48 smooth
wall
0.024 48 0.025 0.50 0.13 2.45 0.20 0.48 single
wall