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V :" i B3 „...„, ' J J . � 1 t i II • i VI z k \ % k I ! �, t 1 Is • t N CA C yru 4): •NansvelP.momi. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 5 * ******************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FILE NAME: MASTER25.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 200.00 TO NODE 210.00 IS CODE = 21 » »> RATIONAL METHOD INITIAL SUBAREA ANALYSIS « «< »USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA« INITIAL SUBAREA FLOW- LENGTH(FEET) = 1000.00 ELEVATION DATA: UPSTREAM(FEET) = 1002.00 DOWNSTREAM(FEET) = 978.00 Tc = K*E(LENGTH** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 17.544 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.572 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.) NATURAL POOR COVER "BARREN" B 7.86 0.03 1.00 97 17.54 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.03 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA RUNOFF(CFS) = 17.96 TOTAL AREA(ACRES) = 7.86 PEAK FLOW RATE(CFS) = 17.96 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 210.00 TO NODE 220.00 IS CODE = 61 » »>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA« «< » »>(STANDARD CURB SECTION USED) « «< UPSTREAM ELEVATION(FEET) = 978.00 DOWNSTREAM ELEVATION(FEET) = 971.00 STREET LENGTH(FEET) = 750.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 32.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 22.00 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) = 30.83 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.58 HALFSTREET FLOOD WIDTH(FEET) = 20.87 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.39 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.95 STREET FLOW TRAVEL TIME(MIN.) = 3.69 Tc(MIN.) = 21.23 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 2.294 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 13.80 0.45 0.50 76 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.45 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.50 SUBAREA AREA(ACRES) = 13.80 SUBAREA RUNOFF(CFS) = 25.69 EFFECTIVE AREA(ACRES) = 21.66 AREA- AVERAGED Fm(INCH /HR) = 0.16 AREA- AVERAGED Fp(INCH /HR) = 0.23 AREA- AVERAGED Ap = 0.68 TOTAL AREA(ACRES) = 21.66 PEAK FLOW RATE(CFS) = 41.68 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.63 HALFSTREET FLOOD WIDTH(FEET) = 23.45 FLOW VELOCITY(FEET /SEC.) = 3.66 DEPTH *VELOCITY(FT *FT /SEC.) = 2.30 LONGEST FLOWPATH FROM NODE 200.00 TO NODE 220.00 = 1750.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 220.00 TO NODE 230.00 IS CODE = 61 » »>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA« «< » »>(STANDARD CURB SECTION USED) « «< UPSTREAM ELEVATION(FEET) = 971.00 DOWNSTREAM ELEVATION(FEET) = 964.00 STREET LENGTH(FEET) = 1047.00 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) = 64.20 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.75 HALFSTREET FLOOD WIDTH(FEET) = 33.60 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.54 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.65 STREET FLOW TRAVEL TIME(MIN.) = 4.93 Tc(MIN.) = 26.16 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.024 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 27.80 0.45 0.50 76 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.45 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.50 SUBAREA AREA(ACRES) = 27.80 SUBAREA RUNOFF(CFS) = 44.99 EFFECTIVE AREA(ACRES) = 49.46 AREA- AVERAGED Fm(INCH /HR) = 0.20 AREA - AVERAGED Fp(INCH /HR) = 0.34 AREA- AVERAGED Ap = 0.58 TOTAL AREA(ACRES) = 49.46 PEAK FLOW RATE(CFS) = 81.41 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.80 HALFSTREET FLOOD WIDTH(FEET) = 38.79 FLOW VELOCITY(FEET /SEC.) = 3.69 DEPTH *VELOCITY(FT *FT /SEC.) = 2.96 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 1047.0 FT WITH ELEVATION -DROP = 7.0 FT, IS 59.7 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 230.00 LONGEST FLOWPATH FROM NODE 200.00 TO NODE 230.00 = 2797.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 230.00 TO NODE 230.00 IS CODE = 81 » » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 26.16 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.024 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 16.80 0.45 0.50 76 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.45 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.50 SUBAREA AREA(ACRES) = 16.80 SUBAREA RUNOFF(CFS) = 27.19 EFFECTIVE AREA(ACRES) = 66.26 AREA- AVERAGED Fm(INCH /HR) = 0.20 AREA- AVERAGED Fp(INCH /HR) = 0.36 AREA- AVERAGED Ap = 0.56 TOTAL AREA(ACRES) = 66.26 PEAK FLOW RATE(CFS) = 108.59 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 230.00 TO NODE 60.00 IS CODE = 61 » »>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA« «< » » >(STANDARD CURB SECTION USED) « «< UPSTREAM ELEVATION(FEET) = 964.00 DOWNSTREAM ELEVATION(FEET) = 957.00 STREET LENGTH(FEET) = 810.00 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) = 118.07 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED STREET FLOW DEPTH(FEET) = 0.85 HALFSTREET FLOOD WIDTH(FEET) = 41.29 AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.53 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 3.86 STREET FLOW TRAVEL TIME(MIN.) = 2.98 Tc(MIN.) = 29.14 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 1.897 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 12.60 0.45 0.50 76 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.45 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.50 SUBAREA AREA(ACRES) = 12.60 SUBAREA RUNOFF(CFS) = 18.95 EFFECTIVE AREA(ACRES) = 78.86 AREA- AVERAGED Fm(INCH /HR) = 0.21 AREA- AVERAGED Fp(INCH /HR) = 0.38 AREA- AVERAGED Ap = 0.55 TOTAL AREA(ACRES) = 78.86 PEAK FLOW RATE(CFS) = 119.98 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.86 HALFSTREET FLOOD WIDTH(FEET) = 41.42 FLOW VELOCITY(FEET /SEC.) = 4.57 DEPTH *VELOCITY(FT *FT /SEC.) = 3.91 LONGEST FLOWPATH FROM NODE 200.00 TO NODE 60.00 = 3607.00 FEET. END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 78.86 TC(MIN.) = 29.14 EFFECTIVE AREA(ACRES) = 78.86 AREA- AVERAGED Fm(INCH /HR)= 0.21 AREA- AVERAGED Fp(INCH /HR) = 0.38 AREA- AVERAGED Ap = 0.55 PEAK FLOW RATE(CFS) = 119.98 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 5 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 71.00 50.00 56. 0.748 0.666 2 7.86 100.00 86. 0.272 0.791 TOTAL AREA (Acres) = 78.86 AREA- AVERAGED LOSS RATE, Fm (in. /hr.) = 0.364 AREA- AVERAGED LOW LOSS FRACTION, Y = 0.322 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** 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 5 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 71.00 50.00 76.( 56.) 0.452 0.807 2 7.86 100.00 97.( 86.) 0.036 0.955 TOTAL AREA (Acres) = 78.86 AREA- AVERAGED LOSS RATE, Fm (in. /hr.) = 0.207 AREA- AVERAGED LOW LOSS FRACTION, Y = 0.178