HomeMy WebLinkAboutCT 01-12; RIVA GARDENS; HYDROLOGY AND HYDRAULICS; 2002-07-19HYDROLOGY AND HYDRAULICS
FOR
JOSEPH AND NADJA SPANO
2390 SPRUCE STREET
CARLSBAD, CA 92008
APN: 205-112-11,18
LOTS 5 AND 6, OPTIMO TRACT, ACCORDING TO
MAP No. 1805, FILED IN THE OFFICE OF THE COUNTY
RECORDER OF SAN DIEGO COUNTY, SEPTEMBER 4, 1924,
IN THE CITY OF CARLSBAD, COUNTY OF SAN DIEGO,
STATE OF CALIFORNIA.
PROJECT LOCATION:
NORTHWEST CORNER OF CHESTNUT AVENUE
AND ADAMS STREET.
JOB NO. 207-8
PREPARED: JULY 19, 2002
BY:
RP Engineers, Inc:.
13061 Poway Road
Poway, CA 92064
(8 486-
ulo F. Puertollano
RCE No. 27246
EXP. 3-31-05
RECEIVED
JUL 2 6 2002
. CITY OF CARLSBAD
PLANNING DEPT.
~ro/--Od-
K1 ua G,ard-€nS
JOSEPH & NADJA SPANO
CARLSBAD, CALIFORNIA
DRAINAGE STUDY
JOB NO. 207-8
TABLE OF CONTENTS
I. PAGE A.1
II. HYDROLOGY CALCS 8 .1 to B.
Ill. PIPE HYDRAULICS C.1 to C.
IV. CHARTS AND REFERENCES
V. MISC. DETAILS
VI. HYDROLOGY MAP
REFERENCES:
County of San Diego Drainage Design Manual
Hydraulics Handbook -King and Brater
City of Carlsbad esign Standard
Bureau of Public Works Design Charts
DRAINAGE STUDY
SPANO RESIDENCE
2390 SPRUCE STREET
CARLSBAD, CA 92008
JOB NO. 2078
HYDROLOGY CALCULATIONS
IRATIONAL METHOD
FORMULA Q100 = C XIX A
C = RUNOFF COEfflCIE.f.J1
I = RAINFUL INTENSITY IN INCHES PER HOUR
A= TRIBUTARY AREA IN ACRES
INITIAL AREA, A-1 A = 0.214 ACRE SOIL GROUP =
L \-OT 1)
TIME OF CONCENTRATION: Tc= 10 MINUTES
THE RAINFUL INTENSITIES ARE: 1100 = L\.S IN/HR.
ROUGHNESS COEFFICIENT: C = 0.55
FROM THE DAT A ABOVE THE AMOUNT OF STORM WATER
OR DISCHARGE ARE AS FOLLOWS:
I Q,oo ~ CxlxA= o .. S.3
PKW.. UP POINT 6(L
Co~CE=rJT~ATIO~ f>O\tJT •
C.F.S.
A:r SOUn\Lvf=~T (ORtJ61Z OF LOT i
T\¼RU 4'1 <I> ~•DewA'-1'=-IJtJ.DEr2..DR..Al,J .
D
SPANO RESIDENCE
2390 SPRUCE STREET
CARLSBAD, CA 92008
JOB NO. 2078
HYDROLOGY CALCULATIONS
IRATIONAL METHOD
FORMULA Q100 = C X J X A
C = RUNOFF COE F f"1c.1etJT
I = RAINFUL INTENSITY IN INCHES PER HOUR
A= TRIBUTARY AREA 1N ACRES
INITIAL AREA, B-1 A= 0.23 ACRE SOILGROUP =
(1-oT t;)
TIME OF CONCENTRATION: Tc= 10
THE RAINFUL INTENSITIES ARE: l100 = .Y.S
ROUGHNESS COEFFICIENT: C = 0.55
FROM THE DAT A ABOVE THE AMOUNT OF STORM WATER
OR DISCHARGE ARE ARE AS FOLLOWS:
I Q,00 ~ CxlxA= o.:sl C.F.S.
MINUTES
IN/HR.
D
Co~C.~T~A. ,~o~ f>OINT ( P1c.1'~Up po ltJl ,-lo. '2)
\""2.''><\l.." YAA.D t>JZ.0.1,J
A1 <:t>u.·n-\c.rnr Coe<t-J El2. or=
LoT 5
TtHZ.U 4 '1 <$ PVC <2 1. o/o U1J0el't..T+-\£ t>IZ.1"e-.wto.'i
T1-Htu l:t n.M~ L ,~ s w "-[..;~
SPANO RESIDENCE
2390 SPRUCE STREET
CARLSBAD, CA 92008
JOB NO. 2078
HYDROLOGY CALCULATIONS
IRATIONAL METHOD
FORMULA Q100 = C XIX A
C = RUNOFF CoE.FflCC£ijT
I = RAINFUL INTENSITY TN INCHES PER HOUR
A= TRIBUTARY AREA IN ACRES
INITIAL AREA, B-2 A= 0.222 ACRE
(Lor Z)
SOIL GROUP =
TIME OF CONCENTRATION: Tc= 10 MINUTES
THE RAINFUL INTENSITIES ARE: l100 = ~-5 IN/HR.
ROUGHNESS COEFFICIENT: C = 0.55
FROM THE DATA ABOVE THE AMOUNT OF STORM WATER
OR DISCHARGE ARE AS FOLLOWS:
CxlxA= o.'5~ C.F.S.
PO IN 1 0 F '°NCEWTRA1 ION ;
AT SotJrf.1 LU;sr co~tJe.R TH~o 4 ''¢ PJPe
St De W'-LIC u uoerz. p fi6.f ,J.
D
SPANO RESIDENCE
2390 SPRUCE STREET
CARLSBAD, CA 92008
JOB NO. 2078
HYDROLOGY CALCULATIONS
!RATIONAL METHOD
FORMULA Q100 = C XIX A
C = RUNOFF C..OE.ffl CtElllT
I = RAINFUL INTENSITY lN INCHES PER HOUR
A= TRIBUTARY AREA IN ACRES
INITIAL AREA, C-1
(W>T 4)
A = 0.256 ACRE
TIME OF CONCENTRATION: Tc=
THE RAINFUL INTENSITIES ARE: 1100 =
ROUGHNESS COEFFICIENT: C =
SOIL GROUP =
10 MINUTES
"'-S IN/HR.
0.55
FROM THE DATA ABOVE THE AMOUNT OF STORM WATER
OR DISCHARGE ARE AS FOLLOWS:
I Q,oo ~ CxlxA= 0 •. ~ 3 C.F.S.
Pol~i oF Cot,.1CE.~TRt.TI01'l ·
SOUf'rt W6"~T · C.oci..,etz. of? L-oT 4
D
SPANO RESIDENCE
2390 SPRUCE STREET
CARLSBAD, CA 92008
JOB NO. 2078
HYDROLOGY CALCULATIONS
!RATIONAL METHOD
FORMULA Q100 = C xix A
C = RUNOFF Cof~f:lc.&~MT
I = RAINFUL INTENSITY IN INCHES PER HOUR
A = TRIBUTARY AREA IN ACRES
INITIAL AREA, C-2
(Lor 3)
A= 0.188 ACRE
TIME OF CONCENTRATION: Tc=
THE RAINFUL INTENSITIES ARE: lioo=
SOILGROUP = D
10 MINUTES
l\.S IN/HR.
ROUGHNESS COEFFICIENT: C = 0.55 SF RESIDENTIAL
FROM THE DATA ABOVE THE AMOUNT OF STORM WATER
OR DISCHARGE ARE:
I Q10•= CxlxA= o.4bS C.F.S.
POINT OF CONCENTRATION= 3-4"dia PIPE SIDEWALK UNDERDRAIN
AT 'SDUf"l.•lLJEST C.orl.tJErL op Lor ~ -
Worksheet
Worksheet for Circular Channel
Project Description
Wor1<sheet
Flow Element
Method
Solve For
Input Data
4"PVC
Circular Channel
Manning's Formula
Discharge
Mannings Coefficient 0.010
Slope 0.020000 ft/ft
Depth 0.30 ft
Diameter 4 in
Results
Discharge
Flow Area
Wetted Perimeter
Top Width
Critical Depth
Percent Full
Critical Slope
Velocity
Velocity Head
Specific Energy
Froude Number
Maximum Dischars
Discharge Full
Slope Full
Flow Type
0.37 cfs
0.1 ftZ
0.83 ft
0.20 ft
0.32 ft
90.0 %
0.019683 ft/ft
4.51 ft/s
0.32 ft
0.62 ft
1.24
0.38 cfs
0.35 cfs
0.022718 ft/ft
S upercritlcal
c:\haestad\fmw\spano.fm2
(). : 0.11 tf 1
~
Cl,AC,lf\ •F
4" '"c. C! -z ~-S&.•PC-
07/25/02 03:08:21 PM <C> Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666
FlowMaster 116.1 [614n]
Page 1 of 1
Worksheet
Worksheet for Circular Channel
Project Description
Worksheet
Flow Element
Method
Solve For
Input Data
4"PVC
Circular Channel
Manning's Formula
Discharge
Mannings Coefficient 0.010
Slope 0.030000 ft/ft
Depth 0.30 ft
Diameter 4 In
Results
Discharge
Flow Area
Wetted Perimeter
Top Width
Critlcal Depth
Percent Full
Critical Slope
Velocity .
Velocity Head
Specific Energy
Froude Number
Maximum Dischal"!:
Discharge Full
Slope Full
Flow Type
0.46 cfs
0.1 ftZ
0.83 ft
0.20 ft
0.33 ft
90.0 %
0. 030326 ft/ft
5.52 ft/s
0.47 ft o.n ft
1.51
0.46 cfs
0.43 cfs
0.034078 ft/ft
Supercritical
c:\haestad\fmw\spano.fm2
--.4~
07/25/02 03:08:50 PM (0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666
FlowMaster v6.1 [614n)
Page 1 of 1
(1.
NO . 1212 STEEL
TRAFFIC GRATE
WT,-33 #
28 6 II
II ,, ,,
I 1,
CA p1. c. ttt, "F 1/J L..-1
A~'-C.M ~ PCtJC>IW"'-o,--au -A .. I/ ~ 11.. )(j :: b, S' r-,.. ,,,. q.
C :. • c,o
FAC-T""" f'""-·c.. L • ~'-Lµt. :: -a.,"'
28 DAY CONCRETE COMPRESSIVE
STRENGTH = 4500 PSI
12 11 x 12 11 CATCH BASIN
WITH 4 11 WALLS
BROOKS PRODUCTS INC.
a::.__ _________________ ---J~-----------
·-t-t-+-
l-+-H-f.-1-l+ ~•-·11111111111-t•
t-t• •-~•H•l-1+ I· 11111 t I ,i I I I I I I •·•·
•-+-+-4--4-1-•.
•-l-.1 •1-1-l•l••l-l-l•I 1.1 LI 11,1,
-·-• ··•-•-•--&-~-1-1-1.1. -i-+-H-H-l··Hf.f•
1·-H-1-H+++H
~-~·H-+-H-
IO 15 20 30 40 50 1 2 . 3
IGN CHART
.!lq .. 1, 0
4 5 6
Directions for Application: ---
-· I -. . • . I
1) From precipitation r:,aps detennine 6 hr. and
24 hr, amounts for the selected fref1uenc~,.
These maps are printed 1n the County Hyqrology
Manual (10, 50 ~nd 100 yr. maps included in th-
Design and Procedure Manual).
2) Adjust 6 hr. precipitation (if necessary) so
that it is within the range of 45Z to 65t of
the 24 hr. prec1 p1 ta t1on. (Not ilprl icabl e to Desert)
3) Pl~t 6 hr. precipitation on the right side of the chart.
4) Draw a 11ne through the point parallel to the plotted lines.
5) This 11ne 1s the 1ntens1ty-durat1on curve for
the location being analyzed.
Application Form:
·o) Selected Frequency r~o yr.
l) p6 :a ~--~ in.• P24=-4-.r: • *p6 a: ~~ ,;•
Pz4 2) Adjusted •p6-Z. i 1n.
1
3) tc • IO min.
4) I • 4 , ~ 1 n/ hr.·
*Not Applicable to Desert Region
APPENDIX .. XI
IV-A-14
C~Y OF SAN DIEGO
ot)TMENT OF SANITATION &
FLOOO CONTROL 1 oo-vrntr!4-HOlf H PrlECIPIT AT1mJ
r-20../ IS0PLU\IIALS or-100 -\'EAn 24-HOUR
'•S ,
\.;f-
30'
15 I
33° . I I < \ \ l----'-----~1 ~ h ~
45 1
P,•r•J·d br
U.S. DEPARTMt::Nlr OF COMMERCE
NATIONAL OCt.l\:,;1c ANO AT:4osP,1ERIC AO~IINISTRATION
SPECIAL STUDIES BRANCH, OHIC~ Of 11f DROLOGY, NATIONAL WEATHER SERVICE
JO. . ~ , , 1 r 1 1 I I
I 111" /1!j I JO' J'i I 117° / I '.i 1 :io• I :, I · 11 (,u
. .. ... -I """""T" VT II
1..uv,ait.Ut-~AN DIEGO
·-■.rnr OF SANITATION &
b:ITI\OL
45'
100-VEAR r!11ouh PRtClfrllT ATm;j
• ,...20../ I SOPLUVIALS l~F 100-VEA!l 6-IIOUR
PfiEC\PiT/\TIOn l\'-1 J EilTMS o;: ArJ H!CB
33°
, .... _
' 15 I
1
'-''.-l < ~ .• I \ 7 71
'7..<\
-------···--45
1 I I I -Ji f ...• Q.j co I >f .. --·---·
Pr•r"" f•J by
u .s. DEPARTMENlr oi:-COMMERCE
NATIO:iAL OCl::ANIC AND AT) OSPIIEHIC AD~:INISTRATION
SPECIAL STUDIES DRA~CII, OFFICE Of II llROLOOY, NATIONAL l'EATIIER SERV1Ct
30 1 ~ I I
118 I 45 1 30 1
I --I
15 I 117° L15 I JO' '• J 5 I I I 6°
I X
•• ..
, ....
, '.' . ,
C 0 0 .J l&,. __ .,,,:._:.,.
I =
► _J ID 0 0~ (I)~;.; a. .. a..c
""Q
RUNOFF COEFFICIENTS (RATIONAL: METHOD)
DEVELOPED AREAS {URBAN)
C Qeffici!lnt. C
Soil Group 111
Land Use. 6 8 ~ D
Residential: Q Single Family .40 .45 g
Multi-Units .45 .50 ® .70
Mobile Homes .45 .50 .55 .65
Rural (lots greater than 1/2 acre) .30 .35 .40 .45
Commercial 121
80% Impervious .70 .75 .80 .8 5
Industrial 121
90% Impervious .80 .85 .90 .9 5
NOTES:
111 Soil Group maps are available at the offices of the Department of Public Works_
121 Where actual conditions deviate significantly from the tabulated imperviousness
values of 80% or 90%, the values given for coefficient C, may be revised by
multiplying 80% or 90% by the ratio of actual imperviousness to the tabulated
imperviousness. However, in no case shall the final coefficient be less than O. SO.
For example: Consider commercial property on D soil group.
Actual imperviousness = 50%
Tabulated imperviousness = 80%
Revised C = 50 x 0 .85 = 0 . 53
80
IV-A-9
APPENDIX IX
t f--'-•-~ A Ir\...,
H
/IJIJ/}
9/JO
800
7()0
GIJIJ ' soo ' "
£Qt1/ITIOAI
(
/1..!lL J) .38S Tc • H
le = lime ol' co.ncenlraf1on
L = Len9I/J or waler.shed
II• /)i/i'erence in elevar1;:,n ·a/011;
ellec/1";,e s/o.oe line ( s~e l?~x Y-BJ J;,
L e
/Hiles F~~f #~r.s
¢
3
/I}
2
s
4
M1"ttvl~s
Ut7
!Bd
/21)
/I)/) ~ ~ '\-:;.~ 1-........ -'o J
31)0 ~~
'\
" 2/Jt) " 2
'
,o
"-" JO
' //)/)
I
'
5LJt)tJ
... 4(._~tJ 20
' /8
Jt)tJt) " IG
as '\ /I,
' 2tJOO " /2
1800 ' /600 /0
,31) NarE /¢/)() 9 ~---==--------::, tFOR NATURAL WATERSHEDSJ
ZtJ I ADO TEN MINUTES TO fl ~ COMPUTED TIME OF CON-!
~~N!._RA~~--~~
l~tJLJ 8
/000 7
900 800 • TtJO 5
otJtJ
50tJ
/t)
,,.
4tJ()
.J
300
5
2()0
H L
NOMOGRAPH FOR OETERM I NATION
OF TIME OF CONCENTRATION (Tc)
F~ NATURAL WATERSHEDS
SAN DIEGO COUNTY
DEPARTMENT OF SPECIAL DISTRICT SERVICES
DES I GN MANUAL
, ./ •• ,, ✓ -...Q.__
--,,, I, ; ,, ~
----/
r
---\ \
\ \
"\
\ ·,
> ~------
Waler.s/2ed
L)/v/de
Slope Line.
Slreo/77
---
1,,....,,1'-------------L
SAN DIE GO COUNTY
DEPARTMENT OF SPECIAL DISTRICT SERVICES
DES I GN MANUAl,.✓-
APPROVED /:,' ', ', • r' "-·, • r ,. ,·,.
L -/ -----
1Je.si.911 h/nf
C.Haler.sAec;,/ Ov/lel J
COMPUTATION Ot EFFECTIVE SLOPE
FOR NATURAL WAT ER SHEDS
I DATE ___ ~_, __ AP PENO IX X-8
~ r~ ·-.. , ct.~+-.. ............... ...-~.: ... : J..,, ~-
/ L
/ ,. . ., /
~ I ~. ' 1,,J1'1'
r./1 ..r-,, '
• -r .,.., -.....
.,-, Jo
',,;v',,,,,,. -.-< .-. ·-. ~ ,... .......-: ......., -. .,--
Exon'?p/4 :
.,, .
C/ vea : L eng//2 ol' /"low , JOO /r.
S/ope • I tJ ¾
. -l
Coe/hc1en/ ol i'uno/1. C •. 50
Read :O,,.erhnol /7pw1~me•I.J Jllnv/e.s
SAN 01 EGO COUNTY
DEPARTMENT OF SPECIAL DISTRICT SE RV ICES
DES I GN MANUAL
/..,, ,~_ ... , ~ .. ✓ •• ~ ,.,. , ·r-;-.· --.
I'
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-~
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-.. ,~
, I
._,_ • . !Jd
, .15
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10
tJ
URBAN AREAS OVER LANO TIME
OF FLOW CURVES
APPEND! X X -C
SEE 1086 MAP
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t!D</sr.r~G S.T;re(KJ""(;,J,'i!d':5 (8) 220 X Z = 440 GPO
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C. T. NO. 01-lc
TENTATIVE MAP
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8<':?UGFITT/ll&; LOTS-.
P,ROPOSGO COI/E.UA,Ur OP G4ScFM6'llT ~ .,PRIV-4T"5 £JR,4M.14Ge
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PROPOS60 CZ>t/d!!!',<,/4,Ur Or GASE::MG.Ur ?OR ,P,if'/V-4Te :sGW,!;?R
PVR POS&'S SE'U&F/77/,U?:; LOT '7'-.
PROPosEO Sl<2HT Ot.!:,74,UCE COR;:;?IOcr? CrYPe.ll) TO 6</SU~
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HYRDOLOGY LEGEND
-··-··-PROJECT BASIN BDRY.
------_, SUB-BASIN BDRY.
•• __. •· •-DIRECTION OF FLOW
SUB-BASIN AREA/ ACREAGE
DISCHARGE IN C.F.S Q /00
01 .. CHA~&E'®II!!'! JC ◄ '? CONCENTRATION POINT
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~IYD~OLOGY MAP
PREPARED: JULY 19, 2002
BY:
RP Engineers, Inc.
13061 Poway Road
Poway, CA 92064
(858)486-0490
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