HomeMy WebLinkAbout3416; AVENIDA ENCINAS EXTENSION; HYDROLOGY & HYDRAULIC CALCULATIONS; 1994-04-22HYDROLOGY AND HYDRAULIC CALCULATIONS
FOR
AVENIDA ENCINAS EXTENSION AND WIDENING
City Project No. 3416
Prepared by:
FRASER ENGINEERING, INC.
Submitted to:
City of Carlsbad
Enginering Department
April 22, 1994
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Circular Channel Analysis & Design
Solved with Mannin(s Equation Worksheet Name: AVE. ENCINAS
Open Channel - Uniform flow Comment: STA 49+63 TO 51+94
Solve For Actual Depth
Li /" 1ZCP
Given Input Data:
Diaseter..........
O•70 Slope.............
Nannin(s a.......
Discharge.........
,1fJ'ojg j,it.t pcevitJ Computed
Velocity..........
Flow Area.........
Critical Depth....
Critical Slope....
- Percent Full......
- Full Capacity.....
Open Channel flov Module, Version 3.12 (c) 1990 QNAX .94D........ Raestad Methods, Inc. $ 37 ookside Rd 9 Ma;erbury. Ct 06711 Fronde Nusber.....
3.00 ft
0.0070 ft/ft
0.013
38.90 cfs
1.84 ft
8.53 fps
4.56 sf
2.03 ft
0.0053 ft /ft
61.48 %
55.80 cfs
60.03 cfs
1.20 (flow is Supercritical)
to. Oak 41-4 -.
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CENTRATIO
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(S
SAN DIEGO COUNTY NOMOGRAPH FOR DETERMINATION
DEPARTMENT OF SPECIAL DISTRICT SERVICES OF TIME OF CONCENTRATION (Tc)
FOR NATURAL WATERSHEDS DESIGN MANUAL
i< APPROVED ' .444%'E DATE /2/14 APPENDIX X-A V-A-10 Rev. 5/81
k2
2.0
1.5
1.0
15 20 30 40 50 1 2 3 •4 5 6
Minutes Hours Duration
Go (I' •2
INTENSITY-DUMTION tiESIc! Cil/uti
0 C 1
Directions for Application:
From precipitation naps determine 6 hr. and
24 hr. amounts for the selected frequency.
These maps are printed in the County Hydrology
Manual (10 50 and 100 yr. maps included in the
Design and Procedure Manual).
Adjust 6 hr. precipitation (if necessary) so
that it is within the range of 45% to 65% of
the 24 hr. precipitation. (tot applicable
to Desert)
Plot 6 hr. precipitation on the right side
of the chart.
Draw a line through the point parallel to the
plotted lines.
This line is the intensity-duration curve for
the location being analyzed.
Application Form:
0) Selected Frequency 100 yr.
p6 2,, 1fl ) P24- 4-SO P = 05 %*
P24
Adjusted *P6= Z'("' in.
t = mm. 10
1 = in/hr. 4'3
*Not Applicable to Desert Region
Revised 1/85 AI'I'FNI)TX X1 -A
I-1.z I
I 100YEAR 6-HOU PRECIITATIU
I 20..' ISOPLUVIALS OF 100-YEAR 6-11OUR
pnECIiTitTI0rI ici E41-T-11-IS o AN I;.:dll
253
ELSI
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SAN CL MENTE
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25
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Pcpa dby
U.S. DEPARTMEt I' OF COMMERCE
NATIONAL OCEANIC AND AT. OSPIIEHIC ADMINISTRATION
STUDIES BRANCH. OFFICE OF If UROLOGY. NATIONAL WEATHER SERVICE
306 __________
_
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_
_
_
_
_
_
_
_
_
_
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_
< 118' 15' 30'
COWifY OF SAN DIEGO
DEPARTMENT OF SANITATION &
FLOOD CONTROL
45'
COUNTY OF SAN DIEGO
DEPARTIIENTOF SANITATION 100-YEAR 24-1101 N PRECIPITATION
FLOOD CONTROL
120—'ISOPLUVIALS OF 100 —YEAR 24-1-IOUR
115 # PRECIPITATIOU III EUTIIS OF AN INCH
_
113 I
fi , 4 80
330
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15'
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U.S.
80
DL'PARFMLNIOICOMMERCE
NATIONAL OC.L.AIC ANI) AL Cut. 1A ()M'IlL.HIC AUMflsfILAIup4 , ' 3.11 W Lf[) t045 4 5 SUE LIKAIUL OH IJ ICk 01 II WOLGY W NASIIAl. wkArsIk SENvILE SA O . -• q '..ir-.65b0 J — 0 30
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AI'I1INI1I X X1 —
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LO-
OLS
OA
1
I 2 3 4 5 6 7 619 OR ao 30 40 50
DtSCHA (cFS)
DwM RESIDENTIAL STRE!T
ONE SIDE ONLY
EXAMPLE:
Givers' Q= 10 S:2.5%
Chart vs: Depth: 0.4, Velocity = 4.4 f. As.
FIG
SAN DIEGO COWtfl' GUTTER AND ROADWAY
DEPARTMENT OF SPECIAL DISTRICT SERVICES DISCHARGE—VELOCITY CHART
DESIGN MANU.AL
APPROVED DATE APPENDIX X-D