HomeMy WebLinkAboutCT 74-21; Kaiser Electro-Optics; Drainage Study; 1987-05-13DRAINAGE STUDY FOR
KAISER ELECTRO-OPTICS
CT 74-21 LOT 8
MAY 13, 1987
ENGiNEERlNG DEPT. LIBRARY City of Carlsbad 2075 Los Palmas Drive
Coflsbad, CA 92009-4859
PLANNING CONSULTANTS AND CIVIL ENGINEERS
SAN MARCOS. CALIF. 92069 * 619/744-4800
365 SO. RANCHO SANTA FE RD. * SUITE 100
JOB NUMBER 10056
TABLE OF CONTENTS
DESCRIPTION
HYDROLOGY REFERENCES
HYDROLOGY COMPUTER PRINTOUTS
INLET CALCULATIONS
HYDRAULIC REFERENCES
DRAINAGE AREA MAP
PAGES -
1-3
4-5
6
7-8
3
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6-Hour Precipitation (inches)
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RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE
Reference: SAN DIEGO COUNTY FLOOD CONTROL DISTRICT
1985,1981 HYDROLOGY MANUAL
Especially prepared for:
RICK ENGINEERING COMPANY
USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION:
........................................
1985 SAN DIEGO MANUAL CRITERIA
USER SPECIFIED STORM EVENT(YEAR) = 100.00
6-HOUR DURATION PRECIPITATIDN (INCHES) = 3.000
SPECIFIED MINIMUM PIPE SIZE(INCH1 = 12.00
SPECIFIED PERCENT OF GRAOIENTS(0ECIMAL) TO USE FOR FRICTION SLOPE = .90
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Advanced Engineering Software [AESI
VER. 3.4A RELEASE DATE: 4/22/86
SERIAL No. 106051
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............................................................................
FLOW PROCESS FROM NODE 100.00 TO NODE 102.00 IS CODE = 2
>>)>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS:<<<<
===I_E==="I===II=C==-3Eli=="------IIID=="*~====~===~~~~===~"="~~====~"
SOIL CLASSIFICATION IS "0"
INDUSTRIAL OEUELOPMENT RUNOFF COEFFICIENT - .9500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 425.00
DOWNSTREAM ELEVATION = 379.70
UPSTREAM ELEVATION = 383.90
ELEVATION DIFFERENCE 5
URBAN SUBAREA OVERLAND TIME OF FLOW(M1NUTES) = 5,743
4.20
- 100 YEAR RAINFALL INTENSITY(1NCH:HOUR) = 7.228 SUBAREA RUNOFF( CFS ) =
TOTAL AREA(ACRES) 3
5.63
.62 TOTAL RUNOFF(CFS) = 5.63
............................................................................
FLOW PROCESS FROM NOOE 200.00 TO NOOE 202.00 IS CODE = 2
RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< \ ... . . ..
...........................................................................
SOIL CLASSIFICATION IS "D"
INDUSTRIAL DEVELOPMENT RUNOFF COEFFICIENT = .9500
INITIAL SUBAREA FLOW-LENGTH( FEET) = 260.00
UPSTREAM ELEVATION = 383.90
DOWNSTREAM ELEVATION
ELEVATION DIFFERENCE 6
378.70
URBAN SUBAREA OVERLAND TINE OF FLOW1NINUTES) =
5.20
TIME OF CONCENTRATION ASSUME0 AS 5-MINUTES
3.739
100 YEAR RAINFALL INTENSITY( INCH/HOUR) = 7.904
SUBAREA RUNOFF( CFS ) =
TOTAL AREA(ACRES) = .53 TOTAL RUNOFFCCFS ) =
3.98
3.98
............................................................................
FLOW PROCESS FROM NOOE 300.00 TO NOOE 302.00 IS CODE = 2 __""__""""""""""""""""""""""""""""""""""
,,'-,,RATIONAL tlETHOD INITIAL SUEAREA ANALYSIS<<<(< .... \,'.,
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SOIL CLASSIFICATION IS "D"
INDUSTRIAL DEVELOPMENT RUNOFF COEFFICIENT = .9500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 677.00
UPSTREAM ELEVATION = 363.90
DOWNSTREAM ELEVATION = 378.50
ELEVATION DIFFERENCE = 5.40
URBAN SUBAREA OVERLAND TIME OF FLOW(M1NUTES) = 7.811
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 5.928
SUBAREA RUNOFF( CFS ) =
TOTAL AREA(ACRES ) = 1.72 TOTAL RUNOFF(CFS) =
9.69
9.69
EN0 OF RATIONAL METHOD ANALYSIS
.............................................................................
*~XX*****X*****I*************************************~**************~*** - CAPACITY OF TYPE B INLETS IN A SUMP
X****************l******************~X******~*********"*~***~***~~******
ItAISER ELECTRO-OPTICS LOT 8 CT 74.-?1
- INLET DESIGN rd
***x*************I*************~**~**~~****X*****~**************~*~*****
- DISCHARGE = 5.63 CFS
LENGTH OF INLET REQUIRED TO INTERCEPT 100% OF FLOW
USING CHART 1-103.6C (Q/L=1.7) = 3.311765 FT
LENGTH OF INLET TO BE USE0 = 5 FT
LENGTH OF INLET OPENING USED = 4 FT -
- X****X*l******"*****************************************************~***
CAPACITY OF TYPE E INLETS IN A SUMP ........................................................................
- DISCHARGE = 3.99 CFS
LENGTH OF INLET REQUIRED TO INTERCEPT 100% OF FLOW
USING CHART 1-103.6C LO/L=1.7) = 2.341176 FT
LENGTH OF INLET TO BE USED = 5 FT
- LENGTF OF INLET OPENING USED = 4 FT
CAPACITY OF CIRCULAR PIPES
1 2 *- PUC
DIAMETER = 1
DISCHARGE - FT
13.96 CFS SLOPE = - 131 FT/FT
MANNING'S N -
AREA = - 79
.Dl2
SQ FT VELOCITY - 17 - 67 FPS
CAPACITY OF CIRCULAR PIPES
12" PWC
DIAMETER - 1
DISCHARGE - FT
SLOPE - 15 43 CFS
MANNING'S N - - 16 FT/FT
-812 AREA - - 79
UELOCI TY =
SQ FT
19.53 FPS
.
OUHEAU OF PU[lClC ROADS DIVISION TWO WASII., 0. C. liOMOCRAPH FOH CCFAC!TY OF CURB
C?EriINI; INLETS AT LOW I'OItiTs
0
HYDRAULIC PROPERTIES OF CIRCULAR CONDUITS
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DEPARTMENT OF COUNTY hGIt1EER-COUtlTY OF LOS ANGELES COUNTY ENGINEER
DESIGN DIVISION STANDARD
APPROVED Dd-72
DATE: 5-12-64 .
DIVlSIOIl EHCINEER courtn ENGINEER ncvwo TO