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'.... -- : sL -...." -- "'",..- .. 7 - lit \\ • 4, i mamba zooz 10 40111 101d ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** 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 7 ******************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FILE NAME: MASTER27.DAT TIME /DATE OF STUDY: 08:51 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 15.00 TO NODE 25.00 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) = 1545.00 DOWNSTREAM(FEET) = 1250.00 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE))* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 10.622 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.476 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 10.00 0.03 1.00 97 10.62 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.03 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA RUNOFF(CFS) = 30.98 TOTAL AREA(ACRES) = 10.00 PEAK FLOW RATE(CFS) = 30.98 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 25.00 TO NODE 35.00 IS CODE = 53 » »»COMPUTE NATURAL MOUNTAIN CHANNEL FLOW« «< » »>TRAVELTIME THRU SUBAREA« «< ELEVATION DATA: UPSTREAM(FEET) = 1250.00 DOWNSTREAM(FEET) = 1000.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 1380.00 CHANNEL SLOPE = 0.1812 CHANNEL FLOW THRU SUBAREA(CFS) = 30.98 FLOW VELOCITY(FEET /SEC) = 7.48 (PER LACFCD /RCFC &WCD HYDROLOGY MANUAL) TRAVEL TIME(MIN.) = 3.08 Tc(MIN.) = 13.70 LONGEST FLOWPATH FROM NODE 15.00 TO NODE 35.00 = 2380.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 35.00 TO NODE 35.00 IS CODE = 81 » »»ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 13.70 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.984 SUBAREA LOSS RATE DATA(AMC III): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN NATURAL POOR COVER "GRASS" B 23.40 0.14 1.00 93 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.14 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA AREA(ACRES) = 23.40 SUBAREA RUNOFF(CFS) = 59.90 EFFECTIVE AREA(ACRES) = 33.40 AREA - AVERAGED Fm(INCH /HR) = 0.11 AREA - AVERAGED Fp(INCH /HR) = 0.11 AREA- AVERAGED Ap = 1.00 TOTAL AREA(ACRES) = 33.40 PEAK FLOW RATE(CFS) = 86.45 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 35.00 TO NODE 90.00 IS CODE = 53 » »»COMPUTE NATURAL MOUNTAIN CHANNEL FLOW« «< » »>TRAVELTIME THRU SUBAREA« «< ELEVATION DATA: UPSTREAM(FEET) = 1000.00 DOWNSTREAM(FEET) = 938.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 686.00 CHANNEL SLOPE = 0.0904 CHANNEL FLOW THRU SUBAREA(CFS) = 86.45 FLOW VELOCITY(FEET /SEC) = 7.43 (PER LACFCD /RCFC &WCD HYDROLOGY MANUAL) TRAVEL TIME(MIN.) = 1.54 Tc(MIN.) = 15.24 LONGEST FLOWPATH FROM NODE 15.00 TO NODE 90.00 = 3066.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 90.00 TO NODE 90.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 15.24 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.799 SUBAREA LOSS RATE DATA(AMC III): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN NATURAL POOR COVER "GRASS" B 22.10 0.14 1.00 93 RESIDENTIAL "3 -4 DWELLINGS /ACRE" B 14.00 0.45 0.60 76 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.23 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.84 SUBAREA AREA(ACRES) = 36.10 SUBAREA RUNOFF(CFS) = 84.75 EFFECTIVE AREA(ACRES) = 69.50 AREA - AVERAGED Fm(INCH /HR) = 0.15 AREA - AVERAGED Fp(INCH/HR) = 0.16 AREA- AVERAGED Ap = 0.92 TOTAL AREA(ACRES) = 69.50 PEAK FLOW RATE(CFS) = 165.66 END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 69.50 TC(MIN.) = 15.24 EFFECTIVE AREA(ACRES) = 69.50 AREA- AVERAGED Fm(INCH /HR)= 0.15 AREA- AVERAGED Fp(INCH /HR) = 0.16 AREA- AVERAGED Ap = 0.92 PEAK FLOW RATE(CFS) = 165.66 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: MASTER PLAN OF DRAINAGE AREA 7 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 14.00 50.00 56. 0.748 0.666 2 55.50 100.00 86. 0.272 0.791 TOTAL AREA (Acres) = 69.50 AREA- AVERAGED LOSS RATE, Fm (in. /hr.) = 0.293 AREA- AVERAGED LOW LOSS FRACTION, Y = 0.234 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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: MASTER PLAN OF DRAINAGE AREA 7 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 14.00 50.00 76.( 56.) 0.452 0.807 2 55.50 100.00 97.( 86.) 0.036 0.955 TOTAL AREA (Acres) = 69.50 AREA- AVERAGED LOSS RATE, Fm (in. /hr.) = 0.074 AREA- AVERAGED LOW LOSS FRACTION, Y = 0.075