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HomeMy WebLinkAboutArea 6 AREA 6 Rational method, 100 year storm Yb calculation z i i L s `` • w '' .11 • i •• • • • ••i► 1=1 . ®m ........- --.�_- _ �-._ .. _ _, a ' g \ on _ , Ili it ‘ kr) ,& r . Eil ‘ „„,,,, \ Ie. X vs ski iiiii aii„ QP II swim 0 '''' § C) \ . X \ti C4 0 (kilo i t 10 -. lbw ir.....z • ..... r 5 i 4 ,,1 r. ,,, Li ,.... :ar i.,,........ dak ........ 4. 7 s • Nvss) f i 41 i t t I • - „....„,,,,, i t _ w 1 a ... +41 ....'. f • re • M ' 111 ,01112- 1 - - . 4 -dli.d. - II '''''*-.1."4*-4141.1 ' ) . i • • ng lio 1 I 0 a i . q.riti .:.. , • . _ 1 • „,, -,it ,,..., 4. •• a • / 1 • Ln 1 • if ON= iremin a ma ii i . ` 4 . 'r rx, r►,/ : •1 ' + . r-z o'er' 3 a t; �► r? _ ilo o lmr -,,,,. ? -prili vfr ib..„ . [ ,.,,.r /0 I: Ari 1110k \ / i 1 fr r 4 ( i _ viNfr,_,-,le.f..?Pi, � �, .. _ .._ . i r .) , ,016 ' 7 . t.,,,,,,,,),,,.,, 11 1 I 1411 N ISP '' Q.. \ tIzoi.- ex-' - - ...... cnx .w +wj f • ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE (Reference: 1986 SAN BERNARDINO CO. HYDROLOGY CRITERION) (c) Copyright 1983 -2003 Advanced Engineering Software (aes) Ver. 8.0 Release Date: 01/01/2003 License ID 1400 Analysis prepared by: Allard Engineering 8253 Sierria Avenue Fontana Ca. 92335 * * * * * * * * * * * * * * * * * * * * * * * * ** DESCRIPTION OF STUDY * * * * * * * * * * * * * * * * * * * * * * * * ** * MASTER PLAN OF DRAINAGE * * 100 YEAR STORM * * AREA 6 * ******************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FILE NAME: MASTER26.DAT TIME /DATE OF STUDY: 08:50 10/11/2006 USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: -- *TIME -OF- CONCENTRATION MODEL*-- USER SPECIFIED STORM EVENT(YEAR) = 100.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 18.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE = 0.90 *USER- DEFINED LOGARITHMIC INTERPOLATION USED FOR RAINFALL* SLOPE OF INTENSITY DURATION CURVE(LOG(I;IN /HR) vs. LOG(Tc;MIN)) = 0.6000 USER SPECIFIED 1 -HOUR INTENSITY(INCH /HOUR) = 1.2300 *ANTECEDENT MOISTURE CONDITION (AMC) III ASSUMED FOR RATIONAL METHOD* *USER- DEFINED STREET - SECTIONS FOR COUPLED PIPEFLOW AND STREETFLOW MODEL* HALF- CROWN TO STREET - CROSSFALL: CURB GUTTER - GEOMETRIES: MANNING WIDTH CROSSFALL IN- / OUT- /PARK- HEIGHT WIDTH LIP HIKE FACTOR NO. (FT) (FT) SIDE / SIDE/ WAY (FT) (FT) (FT) (FT) (n) 1 18.0 12.0 0.020/0.020/0.020 0.67 1.50 0.0200 0.125 0.0180 2 22.0 12.0 0.020/0.020/0.020 0.67 1.50 0.0200 0.125 0.0180 GLOBAL STREET FLOW -DEPTH CONSTRAINTS: 1. Relative Flow -Depth = 0.25 FEET as (Maximum Allowable Street Flow Depth) - (Top -of -Curb) 2. (Depth) *(Velocity) Constraint = 10.0 (FT *FT /S) *SIZE PIPE WITH A FLOW CAPACITY GREATER THAN OR EQUAL TO THE UPSTREAM TRIBUTARY PIPE.* *USER- SPECIFIED MINIMUM TOPOGRAPHIC SLOPE ADJUSTMENT NOT SELECTED ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 60.00 TO NODE 65.00 IS CODE = 21 ---------------------------------------------------------------------------- » » > RATIONAL METHOD INITIAL SUBAREA ANALYSIS« «< »USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA« INITIAL SUBAREA FLOW - LENGTH(FEET) = 370.00 ELEVATION DATA: UPSTREAM(FEET) = 950.50 DOWNSTREAM(FEET) = 947.00 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]**0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 10.521 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.496 SUBAREA Tc AND LOSS RATE DATA(AMC III): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) RESIDENTIAL "5 -7 DWELLINGS /ACRE" B 7.10 0.45 0.50 76 10.52 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.45 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.50 SUBAREA RUNOFF(CFS) = 20.89 TOTAL AREA(ACRES) = 7.10 PEAK FLOW RATE(CFS) = 20.89 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 65.00 TO NODE 66.00 IS CODE = 61 » »>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA« «< » »>(STANDARD CURB SECTION USED) « «< UPSTREAM ELEVATION(FEET) = 947.00 DOWNSTREAM ELEVATION(FEET) = 944.00 STREET LENGTH(FEET) = 370.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 32.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 10.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 STREET PARKWAY CROSSFALL(DECIMAL) = 0.020 Manning's FRICTION FACTOR for Streetflow Section(curb -to -curb) = 0.0150 Manning's FRICTION FACTOR for Back -of -Walk Flow Section = 0.0200 * *TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 37.34 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.62 HALFSTREET FLOOD WIDTH(FEET) = 23.13 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.37 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.09 STREET FLOW TRAVEL TIME(MIN.) = 1.83 Tc(MIN.) = 12.35 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.175 SUBAREA LOSS RATE DATA(AMC III): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN RESIDENTIAL "5 -7 DWELLINGS /ACRE" B 9.50 0.45 0.50 76 NATURAL POOR COVER "BARREN" B 2.70 0.03 1.00 97 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.30 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.61 SUBAREA AREA(ACRES) = 12.20 SUBAREA RUNOFF(CFS) = 32.85 EFFECTIVE AREA(ACRES) = 19.30 AREA- AVERAGED Fm(INCH /HR) = 0.20 AREA - AVERAGED Fp(INCH /HR) = 0.35 AREA- AVERAGED Ap = 0.57 TOTAL AREA(ACRES) = 19.30 PEAK FLOW RATE(CFS) = 51.70 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.68 HALFSTREET FLOOD WIDTH(FEET) = 27.09 FLOW VELOCITY(FEET /SEC.) = 3.65 DEPTH *VELOCITY(FT *FT /SEC.) = 2.49 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 66.00 = 740.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 65.00 TO NODE 70.00 IS CODE = 61 » »>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA« «< » »>(STANDARD CURB SECTION USED) « «< UPSTREAM ELEVATION(FEET) = 944.00 DOWNSTREAM ELEVATION(FEET) = 941.60 STREET LENGTH(FEET) = 370.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 32.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 15.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 STREET PARKWAY CROSSFALL(DECIMAL) = 0.020 Manning's FRICTION FACTOR for Streetflow Section(curb -to -curb) = 0.0150 Manning's FRICTION FACTOR for Back -of -Walk Flow Section = 0.0200 * *TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 90.36 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.83 HALFSTREET FLOOD WIDTH(FEET) = 39.95 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.78 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 3.12 STREET FLOW TRAVEL TIME(MIN.) = 1.63 Tc(MIN.) = 13.98 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.948 SUBAREA LOSS RATE DATA(AMC III): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN RESIDENTIAL "5 -7 DWELLINGS /ACRE" B 8.00 0.45 0.50 76 NATURAL POOR COVER "BARREN" B 22.00 0.03 1.00 97 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.10 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.87 SUBAREA AREA(ACRES) = 30.00 SUBAREA RUNOFF(CFS) = 77.30 EFFECTIVE AREA(ACRES) = 49.30 AREA - AVERAGED Fm(INCH /HR) = 0.13 AREA - AVERAGED Fp(INCH/HR) = 0.17 AREA- AVERAGED Ap = 0.75 TOTAL AREA(ACRES) = 49.30 PEAK FLOW RATE(CFS) = 125.04 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.90 HALFSTREET FLOOD WIDTH(FEET) = 43.55 FLOW VELOCITY(FEET /SEC.) = 4.18 DEPTH * VELOCITY(FT*FT /SEC.) = 3.75 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 370.0 FT WITH ELEVATION -DROP = 2.4 FT, IS 87.9 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 70.00 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 70.00 = 1110.00 FEET. END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 49.30 TC(MIN.) = 13.98 EFFECTIVE AREA(ACRES) = 49.30 AREA- AVERAGED Fm(INCH /HR)= 0.13 AREA- AVERAGED Fp(INCH /HR) = 0.17 AREA- AVERAGED Ap = 0.75 PEAK FLOW RATE(CFS) = 125.04 END OF RATIONAL METHOD ANALYSIS ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** NON - HOMOGENEOUS WATERSHED AREA- AVERAGED LOSS RATE (Fm) AND LOW LOSS FRACTION ESTIMATIONS (C) Copyright 1989 -2003 Advanced Engineering Software (aes) Ver. 9.0 Release Date: 01/01/2003 License ID 1400 Analysis prepared by: Allard Engineering 8253 Sierria Avenue Fontana Ca. 92335 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** Problem Descriptions: Problem Descriptions: MASTER PLAN OF DRAINAGE AREA 6 YB CALCULATION * ** NON - HOMOGENEOUS WATERSHED AREA- AVERAGED LOSS RATE (Fm) AND LOW LOSS FRACTION ESTIMATIONS FOR AMC II: TOTAL 24 -HOUR DURATION RAINFALL DEPTH = 8.00 (inches) SOIL -COVER AREA PERCENT OF SCS CURVE LOSS RATE TYPE (Acres) PERVIOUS AREA NUMBER Fp(in. /hr.) YIELD 1 24.60 50.00 56. 0.748 0.666 2 24.70 100.00 86. 0.272 0.791 TOTAL AREA (Acres) = 49.30 AREA- AVERAGED LOSS RATE, Fm (in. /hr.) = 0.323 AREA- AVERAGED LOW LOSS FRACTION, Y = 0.271 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** NON - HOMOGENEOUS WATERSHED AREA- AVERAGED LOSS RATE (Fm) AND LOW LOSS FRACTION ESTIMATIONS (C) Copyright 1989 -2003 Advanced Engineering Software (aes) Ver. 9.0 Release Date: 01/01/2003 License ID 1400 Analysis prepared by: Allard Engineering 8253 Sierria Avenue Fontana Ca. 92335 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** Problem Descriptions: Problem Descriptions: MASTER PLAN OF DRAINAGE AREA 6 YB CALCULATION * ** NON - HOMOGENEOUS WATERSHED AREA- AVERAGED LOSS RATE (Fm) AND LOW LOSS FRACTION ESTIMATIONS FOR AMC III: TOTAL 24 -HOUR DURATION RAINFALL DEPTH = 8.00 (inches) SOIL -COVER AREA PERCENT OF SCS CURVE LOSS RATE TYPE (Acres) PERVIOUS AREA NUMBER Fp(in. /hr.) YIELD 1 24.60 50.00 76.( 56.) 0.452 0.807 2 24.70 100.00 97.( 86.) 0.036 0.955 TOTAL AREA (Acres) = 49.30 AREA- AVERAGED LOSS RATE, Fm (in. /hr.) = 0.131 AREA - AVERAGED LOW LOSS FRACTION, Y = 0.119