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HomeMy WebLinkAboutHydrology Study for South Fontana********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE (Reference: 1986 SAN BERNARDINO CO. HYDROLOGY CRITERION) (c) Copyright 1983 -2009 Advanced Engineering Software (aes) Ver. 16.0 Release Date: 04/01/2009 License ID 1224 Analysis prepared by: County of San Bernardino 825 East 3rd Street * * * * * * * * * * * * * * * * * * * * * * * * ** DESCRIPTION OF STUDY * * * * * * * * * * * * * * * * * * * * * * * * ** • S.Fontana S.D.Plan Lines DZ(14, 15, and 16) • 25- YR(AMC -II) Integrated rational Method /Unit- Hydrograph Study • Santa Ana Avenue and Banana Avenue in the South Fontana Area ******************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FILE NAME: SAB25R.DAT TIME /DATE OF STUDY: 11:28 05/11/2011 ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- -- *TIME -OF- CONCENTRATION MODEL*-- USER SPECIFIED STORM EVENT(YEAR) = 25.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 24.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE = 0.95 *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) = 1.0500 *ANTECEDENT MOISTURE CONDITION (AMC) II 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 30.0 20.0 0.018/0.018/0.020 0.67 2.00 0.0313 0.167 - - - - - -- - - - - - -- 0.0150 GLOBAL STREET FLOW -DEPTH CONSTRAINTS: 1. Relative Flow -Depth = 0.20 FEET as (Maximum Allowable Street Flow Depth) - (Top -of -Curb) 2. (Depth) *(Velocity) Constraint = 6.0 (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 UNIT - HYDROGRAPH MODEL SELECTIONS /PARAMETERS: WATERSHED LAG = 0.80 * Tc VALLEY(DEVELOPED) S -GRAPH USED. SIERRA MADRE DEPTH -AREA FACTORS USED. AREA- AVERAGED DURATION RAINFALL(INCH) 5- MINUTES 0.39 30- MINUTES 0.86 1 -HOUR 1.05 3 -HOUR 1.81 6 -HOUR 2.55 24 -HOUR 5.63 *ANTECEDENT MOISTURE CONDITION (AMC) II ASSUMED FOR UNIT HYDROGRAPH METHOD* 1 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 10.00 TO NODE 11.00 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) = 1024.00 DOWNSTREAM(FEET) = 1003.00 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 10.433 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.999 SUBAREA Tc AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 6.63 0.98 0.100 32 10.43 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 17.32 TOTAL AREA(ACRES) = 6.63 PEAK FLOW RATE(CFS) = 17.32 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 11.00 TO NODE 12.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>(STANDARD CURB SECTION USED) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 1003.00 DOWNSTREAM ELEVATION(FEET) = 1002.50 STREET LENGTH(FEET) = 180.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 21.77 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.67 HALFSTREET FLOOD WIDTH(FEET) = 28.58 AVERAGE FLOW VELOCITY(FEET /SEC.) = 1.88 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.27 STREET FLOW TRAVEL TIME(MIN.) = 1.59 Tc(MIN.) = 12.03 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.754 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 3.72 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 3.72 SUBAREA RUNOFF(CFS) = 8.89 EFFECTIVE AREA(ACRES) = 10.35 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 10.4 PEAK FLOW RATE(CFS) = 24.75 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.69 HALFSTREET FLOOD WIDTH(FEET) = 29.49 FLOW VELOCITY(FEET /SEC.) = 1.96 DEPTH *VELOCITY(FT *FT /SEC.) = 1.35 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 180.0 FT WITH ELEVATION -DROP = 0.5 FT, IS 11.6 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 12.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 12.00 = 1180.00 FEET. 0) ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 12.00 TO NODE 13.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>> COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< >> >>>(STANDARD CURB SECTION USED)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 1002.50 DOWNSTREAM ELEVATION(FEET) = 1001.20 STREET LENGTH(FEET) = 320.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 31.87 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.70 HALFSTREET FLOOD WIDTH(FEET) = 29.98 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.41 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.69 STREET FLOW TRAVEL TIME(MIN.) = 2.21 Tc(MIN.) = 14.23 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.489 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.61 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 6.61 SUBAREA RUNOFF(CFS) = 14.23 EFFECTIVE AREA(ACRES) = 16.96 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 17.0 PEAK FLOW RATE(CFS) = 36.51 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.72 HALFSTREET FLOOD WIDTH(FEET) = 31.08 FLOW VELOCITY(FEET /SEC.) = 2.51 DEPTH *VELOCITY(FT *FT /SEC.) = 1.81 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 320.0 FT WITH ELEVATION -DROP = 1.3 FT, IS 18.7 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 13.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 13.00 = 1500.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 13.00 TO NODE 14.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>(STANDARD CURB SECTION USED)<< <<< UPSTREAM ELEVATION(FEET) = 1001.20 DOWNSTREAM ELEVATION(FEET) = 999.80 STREET LENGTH(FEET) = 310.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 24.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 16.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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 3 * *TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 42.91 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.79 HALFSTREET FLOOD WIDTH(FEET) = 30.01 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.82 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.22 STREET FLOW TRAVEL TIME(MIN.) = 1.83 Tc(MIN.) = 16.06 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.315 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.41 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 6.41 SUBAREA RUNOFF(CFS) = 12.79 EFFECTIVE AREA(ACRES) = 23.37 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 23.4 PEAK FLOW RATE(CFS) = 46.64 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.80 HALFSTREET FLOOD WIDTH(FEET) = 30.74 FLOW VELOCITY(FEET /SEC.) = 2.90 DEPTH *VELOCITY(FT *FT /SEC.) = 2.32 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 14.00 = 1810.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 14.00 TO NODE 15.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 999.80 DOWNSTREAM ELEVATION(FEET) = 998.50 STREET LENGTH(FEET) = 230.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 51.05 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.75 HALFSTREET FLOOD WIDTH(FEET) = 32.60 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.10 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.33 STREET FLOW TRAVEL TIME(MIN.) = 1.24 Tc(MIN.) = 17.30 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.214 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 4.63 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 4.63 SUBAREA RUNOFF(CFS) = 8.82 EFFECTIVE AREA(ACRES) = 28.00 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 28.0 PEAK FLOW RATE(CFS) = 53.34 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.76 HALFSTREET FLOOD WIDTH(FEET) = 32.97 FLOW VELOCITY(FEET /SEC.) = 3.14 DEPTH *VELOCITY(FT *FT /SEC.) = 2.39 4 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 230.0 FT WITH ELEVATION -DROP = 1.3 FT, IS 14.8 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 15.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 15.00 = 2040.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 15.00 TO NODE 16.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>(STANDARD CURB SECTION USED)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 998.50 DOWNSTREAM ELEVATION(FEET) = 989.00 STREET LENGTH(FEET) = 680.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 24.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 16.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 71.77 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.78 HALFSTREET FLOOD WIDTH(FEET) = 29.52 AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.91 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 3.82 STREET FLOW TRAVEL TIME(MIN.) = 2.31 Tc(MIN.) = 19.61 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.054 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 20.92 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 20.92 SUBAREA RUNOFF(CFS) = 36.84 EFFECTIVE AREA(ACRES) = 48.92 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 48.9 PEAK FLOW RATE(CFS) = 86.14 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.81 HALFSTREET FLOOD WIDTH(FEET) = 31.17 FLOW VELOCITY(FEET /SEC.) = 5.18 DEPTH *VELOCITY(FT *FT /SEC.) = 4.20 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 680.0 FT WITH ELEVATION -DROP = 9.5 FT, IS 57.2 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 16.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 16.00 = 2720.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 16.00 TO NODE 17.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>(STANDARD CURB SECTION USED)<<<<< UPSTREAM ELEVATION(FEET) = 989.00 DOWNSTREAM ELEVATION(FEET) = 985.00 STREET LENGTH(FEET) = 320.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 24.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 16.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 5 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) = 94.52 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.84 HALFSTREET FLOOD WIDTH(FEET) = 32.64 AVERAGE FLOW VELOCITY(FEET /SEC.) = 5.11 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 4.29 STREET FLOW TRAVEL TIME(MIN.) = 1.04 Tc(MIN.) = 20.65 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.991 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 9.84 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 9.84 SUBAREA RUNOFF(CFS) = 16.77 EFFECTIVE AREA(ACRES) = 58.76 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 58.8 PEAK FLOW RATE(CFS) = 100.14 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.85 HALFSTREET FLOOD WIDTH(FEET) = 33.19 FLOW VELOCITY(FEET /SEC.) = 5.21 DEPTH *VELOCITY(FT *FT /SEC.) = 4.43 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 17.00 = 3040.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 17.00 TO NODE 18.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>> USING COMPUTER - ESTIMATED PIPESIZE (NON- PRESSURE FLOW)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 985.00 DOWNSTREAM(FEET) = 980.00 FLOW LENGTH(FEET) = 380.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 42.0 INCH PIPE IS 30.9 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 13.21 ESTIMATED PIPE DIAMETER(INCH) = 42.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 100.14 PIPE TRAVEL TIME(MIN.) = 0.48 Tc(MIN.) = 21.13 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 18.00 = 3420.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 18.00 TO NODE 18.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- MAINLINE TC(MIN.) = 21.13 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.964 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.90 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.90 SUBAREA RUNOFF(CFS) = 18.31 EFFECTIVE AREA(ACRES) = 69.66 AREA - AVERAGED FM(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 69.7 PEAK FLOW RATE(CFS) = 117.01 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 18.00 TO NODE 19.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< 0 ELEVATION DATA: UPSTREAM(FEET) = 980.00 DOWNSTREAM(FEET) = 972.50 FLOW LENGTH(FEET) = 590.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 45.0 INCH PIPE IS 32.8 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 13.58 ESTIMATED PIPE DIAMETER(INCH) = 45.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 117.01 PIPE TRAVEL TIME(MIN.) = 0.72 Tc(MIN.) = 21.86 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 19..00 = 4010.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 19.00 TO NODE 19.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- MAINLINE Tc(MIN.) = 21.86 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.925 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 18.80 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 18.80 SUBAREA RUNOFF(CFS) = 30.91 EFFECTIVE AREA(ACRES) = 88.46 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 88.5 PEAK FLOW RATE(CFS) = 145.46 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 19.00 TO NODE 20.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER- ESTIMATED PIPESIZE (NON- PRESSURE FLOW) <<<<< ELEVATION DATA: UPSTREAM(FEET) = 972.50 DOWNSTREAM(FEET) = 963.50 FLOW LENGTH(FEET) = 680.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 35.7 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 14.51 ESTIMATED PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 145.46 PIPE TRAVEL TIME(MIN.) = 0.78 Tc(MIN.) = 22.64 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 20.00 = 4690.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 20.00 TO NODE 20.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 22.64 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.884 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 21.54 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 21.54 SUBAREA RUNOFF(CFS) = 34.64 EFFECTIVE AREA(ACRES) = 110.00 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 110.0 PEAK FLOW RATE(CFS) = 176.91 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 20.00 TO NODE 21.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>USING COMPUTER- ESTIMATED PIPESIZE (NON- PRESSURE FLOW)<< <<< fA ELEVATION DATA: UPSTREAM(FEET) = 963.50 DOWNSTREAM(FEET) = 940.50 FLOW LENGTH(FEET) = 1336.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 37.8 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 16.65 ESTIMATED PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 176.91 PIPE TRAVEL TIME(MIN.) = 1.34 TC(MIN.) = 23.98 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 21.00 = 6026.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 21.00 TO NODE 21.00 IS CODE = 81 ---------------------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 23.98 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.821 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL B 6.94 0.75 0.100 56 COMMERCIAL A 33.55 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.94 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 40.49 SUBAREA RUNOFF(CFS) = 62.93 EFFECTIVE AREA(ACRES) = 150.49 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.96 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 150.5 PEAK FLOW RATE(CFS) = 233.52 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 21.00 TO NODE 22.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<<<<< ELEVATION DATA: UPSTREAM(FEET) = 940.50 DOWNSTREAM(FEET) = 932.50 FLOW LENGTH(FEET) = 1400.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 66.0 INCH PIPE IS 51.0 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 11.84 ESTIMATED PIPE DIAMETER(INCH) = 66.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 233.52 PIPE TRAVEL TIME(MIN.) = 1.97 TC(MIN.) = 25.95 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 22.00 = 7426.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 22.00 TO NODE 22.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 25.95 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.736 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN SCHOOL A 5.33 0.98 0.600 32 SCHOOL B 12.21 0.75 0.600 56 COMMERCIAL B 1.97 0.75 0.100 56 COMMERCIAL A 23.00 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.84 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.306 SUBAREA AREA(ACRES) = 42.51 SUBAREA RUNOFF(CFS) = 56.54 EFFECTIVE AREA(ACRES) = 193.00 AREA - AVERAGED Fm(INCH /HR) = 0.13 AREA- AVERAGED Fp(INCH /HR) = 0.91 AREA- AVERAGED Ap = 0.15 TOTAL AREA(ACRES) = 193.0 PEAK FLOW RATE(CFS) = 278.66 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 22.00 TO NODE 73.00 IS CODE = 41 ---------------------------------------------------------------------- - - - - -- 8 >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>> USING USER - SPECIFIED PIPESIZE (EXISTING ELEMENT) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 932.50 DOWNSTREAM(FEET) = 920.00 FLOW LENGTH(FEET) = 1350.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 66.0 INCH PIPE IS 48.3 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 14.97 GIVEN PIPE DIAMETER(INCH) = 66.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 278.66 PIPE TRAVEL TIME(MIN.) = 1.50 TC(MIN.) = 27.45 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 73.00 = 8776.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 10 ---------------------------------------------------------------------------- >>>>>MAIN- STREAM MEMORY COPIED ONTO MEMORY BANK # 1 <<<<< ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 30.00 TO NODE 31.00 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) = 1013.00 DOWNSTREAM(FEET) = 997.50 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 11.087 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.892 SUBAREA Tc AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 6.47 0.98 0.100 32 11.09 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 16.27 TOTAL AREA(ACRES) = 6.47 PEAK FLOW RATE(CFS) = 16.27 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 31.00 TO NODE 32.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>(STANDARD CURB SECTION USED)<< <<< ---------------------------------- UPSTREAM ELEVATION(FEET) = 997.50 DOWNSTREAM ELEVATION(FEET) = 996.50 STREET LENGTH(FEET) = 320.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 23.88 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.68 HALFSTREET FLOOD WIDTH(FEET) = 28.82 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.02 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.37 STREET FLOW TRAVEL TIME(MIN.) = 2.64 TC(MIN.) = 13.73 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.544 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.90 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 6.90 SUBAREA RUNOFF(CFS) = 15.19 EFFECTIVE AREA(ACRES) = 13.37 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 13.4 PEAK FLOW RATE(CFS) = 29.44 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.71 HALFSTREET FLOOD WIDTH(FEET) = 30.41 FLOW VELOCITY(FEET /SEC.) = 2.15 DEPTH *VELOCITY(FT *FT /SEC.) = 1.52 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 320.0 FT WITH ELEVATION -DROP = 1.0 FT, IS 18.9 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 32.00 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 32.00 = 1320.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 32.00 TO NODE 33.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>(STANDARD CURB SECTION USED) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 996.50 DOWNSTREAM ELEVATION(FEET) = 995.50 STREET LENGTH(FEET) = 320.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 36.32 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.74 HALFSTREET FLOOD WIDTH(FEET) = 32.18 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.28 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.70 STREET FLOW TRAVEL TIME(MIN.) = 2.34 Tc(MIN.) = 16.07 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.315 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.90 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 6.90 SUBAREA RUNOFF(CFS) = 13.77 EFFECTIVE AREA(ACRES) = 20.27 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 20.3 PEAK FLOW RATE(CFS) = 40.45 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.76 HALFSTREET FLOOD WIDTH(FEET) = 33.15 FLOW VELOCITY(FEET /SEC.) = 2.35 DEPTH *VELOCITY(FT *FT /SEC.) = 1.79 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 320.0 FT WITH ELEVATION -DROP = 1.0 FT, IS 18.9 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 33.00 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 33.00 = 1640.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** 10 FLOW PROCESS FROM NODE 33.00 TO NODE 34.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< >> >>>(STANDARD CURB SECTION USED)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 995.50 DOWNSTREAM ELEVATION(FEET) = 993.00 STREET LENGTH(FEET) = 360.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 47.66 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.72 HALFSTREET FLOOD WIDTH(FEET) = 31.08 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.28 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.37 STREET FLOW TRAVEL TIME(MIN.) = 1.83 Tc(MIN.) = 17.90 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.170 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 7.73 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 7.73 SUBAREA RUNOFF(CFS) = 14.42 EFFECTIVE AREA(ACRES) = 28.00 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 28.0 PEAK FLOW RATE(CFS) = 52.22 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.74 HALFSTREET FLOOD WIDTH(FEET) = 31.87 FLOW VELOCITY(FEET /SEC.) = 3.36 DEPTH *VELOCITY(FT *FT /SEC•.) = 2.48 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 360.0 FT WITH ELEVATION -DROP = 2.5 FT, IS 22.7 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 34.00 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 34.00 = 2000.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 34.00 TO NODE 35.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>> USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< ELEVATION DATA: UPSTREAM(FEET) = 993.00 DOWNSTREAM(FEET) = 983.40 FLOW LENGTH(FEET) = 680.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 33.0 INCH PIPE IS 23.4 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 11.58 ESTIMATED PIPE DIAMETER(INCH) = 33.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 52.22 PIPE TRAVEL TIME(MIN.) = 0.98 TC(MIN.) = 18.88 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 35.00 = 2680.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 35.00 TO NODE 35.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 18.88 11 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.101 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 20.92 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 20.92 SUBAREA RUNOFF(CFS) = 37.73 EFFECTIVE AREA(ACRES) = 48.92 AREA- AVERAGED FM(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 48.9 PEAK FLOW RATE(CFS) = 88.23 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 35.00 TO NODE 36.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< ELEVATION DATA: UPSTREAM(FEET) = 983.40 DOWNSTREAM(FEET) = 979.20 FLOW LENGTH(FEET) = 320.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 39.0 INCH PIPE IS 30.6 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.65 ESTIMATED PIPE DIAMETER(INCH) = 39.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 88.23 PIPE TRAVEL TIME(MIN.) = 0.42 TC(MIN.) = 19.30 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 36.00 = 3000.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 36.00 TO NODE 36.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 19.30 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.074 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 9.84 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 9.84 SUBAREA RUNOFF(CFS) = 17.50 EFFECTIVE AREA(ACRES) = 58.76 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 58.8 PEAK FLOW RATE(CFS) = 104.51 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 36.00 TO NODE 37.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< ELEVATION DATA: UPSTREAM(FEET) = 979.20 DOWNSTREAM(FEET) = 974.50 FLOW LENGTH(FEET) = 380.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 42.0 INCH PIPE IS 33.0 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.91 ESTIMATED PIPE DIAMETER(INCH) _ '42.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 104.51 PIPE TRAVEL TIME(MIN.) = 0.49 TC(MIN.) = 19.79 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 37.00 = 3380.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 37.00 TO NODE 37.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 19.79 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.043 12 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.90 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.90 SUBAREA RUNOFF(CFS) = 19.08 EFFECTIVE AREA(ACRES) = 69.66 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 69.7 PEAK FLOW RATE(CFS) = 121.96 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 37.00 TO NODE 38.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) < <<< ELEVATION DATA: UPSTREAM(FEET) = 974.50 DOWNSTREAM(FEET) = 966.50 FLOW LENGTH(FEET) = 590.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 45.0 INCH PIPE IS 33.0 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 14.04 ESTIMATED PIPE DIAMETER(INCH) = 45.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 121.96 PIPE TRAVEL TIME(MIN.) = 0.70 TC(MIN.) = 20.49 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 38.00 = 3970.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 38.00 TO NODE 38.00 IS CODE = 81 ---------------------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 20.49 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.001 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 18.80 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 18.80 SUBAREA RUNOFF(CFS) = 32.20 EFFECTIVE AREA(ACRES) = 88.46 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 88.5 PEAK FLOW RATE(CFS) = 151.51 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 38.00 TO NODE 46.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< --------------- - -- ELEVATION DATA: UPSTREAM(FEET) = 966.50 DOWNSTREAM(FEET) = 957.30 FLOW LENGTH(FEET) = 680.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 36.6 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 14.72 ESTIMATED PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 151.51 PIPE TRAVEL TIME(MIN.) = 0.77 TC(MIN.) = 21.26 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 46.00 = 4650.00 FEET. ********************************************* * * ** * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 46.00 TO NODE 46.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 21.26 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.957 SUBAREA LOSS RATE DATA(AMC II): 13 DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 21.54 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 21.54 SUBAREA RUNOFF(CFS) = 36.04 EFFECTIVE AREA(ACRES) = 110.00 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 110.0 PEAK FLOW RATE(CFS) = 184.07 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 46.00 TO NODE 46.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 21.26 RAINFALL INTENSITY(INCH /HR) = 1.96 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 110.00 TOTAL STREAM AREA(ACRES) = 110.00 PEAK FLOW RATE(CFS) AT CONFLUENCE = 184.07 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 40.00 TO NODE 41.00 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) = 1001.00 DOWNSTREAM(FEET) = 991.20 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 12.151 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.737 SUBAREA Tc AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 7.13 0.98 0.100 32 12.15 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 16.94 TOTAL AREA(ACRES) = 7.13 PEAK FLOW RATE(CFS) = 16.94 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 41.00 TO NODE 42.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>(STANDARD CURB SECTION USED) <<<<< --------------------------------- UPSTREAM ELEVATION(FEET) = 991.20 DOWNSTREAM ELEVATION(FEET) = 990.50 STREET LENGTH(FEET) = 320.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 36.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 24.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 23.83 14 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.78 HALFSTREET FLOOD WIDTH(FEET) = 26.48 AVERAGE FLOW VELOCITY(FEET /SEC.) = 1.90 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.47 STREET FLOW TRAVEL TIME(MIN.) = 2.81 Tc(MIN.) = 14.96 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.416 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.61 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 6.61 SUBAREA RUNOFF(CFS) = 13.79 EFFECTIVE AREA(ACRES) = 13.74 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 13.7 PEAK FLOW RATE(CFS) = 28.67 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.82 HALFSTREET FLOOD WIDTH(FEET) = 30.61 FLOW VELOCITY(FEET /SEC.) = 1.92 DEPTH *VELOCITY(FT *FT /SEC.) = 1.57 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 320.0 FT WITH ELEVATION -DROP = 0.7 FT, IS 17.3 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 42.00 LONGEST FLOWPATH FROM NODE 40.00 TO NODE 42.00 = 1320.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 42.00 TO NODE 43.00 IS CODE = 56 ---------------------------------------------------------------------------- >> >>>COMPUTE TRAPEZOIDAL CHANNEL FLOW<< <<< >>>>>TRAVELTIME THRU SUBAREA <<<<< ----------------------- ELEVATION DATA: UPSTREAM(FEET) = 990.50 DOWNSTREAM(FEET) = 983.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 660.00 CHANNEL SLOPE = 0.0114 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 6.27 ESTIMATED HEIGHT(FEET) = 3.14 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.184 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.00 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 38.06 TRAVEL TIME THRU SUBAREA BASED ON VELOCITY(FEET /SEC.) = 4.02 AVERAGE FLOW DEPTH(FEET) = 1.12 TRAVEL TIME(MIN.) = 2.73 Tc(MIN.) = 17.70 SUBAREA AREA(ACRES) = 10.00 SUBAREA RUNOFF(CFS) = 18.78 EFFECTIVE AREA(ACRES) = 23.74 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 23.7 PEAK FLOW RATE(CFS) = 44.59 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 6.40 ESTIMATED HEIGHT(FEET) = 3.20 END OF SUBAREA CHANNEL FLOW HYDRAULICS: DEPTH(FEET) = 1.20 FLOW VELOCITY(FEET /SEC.) = 4.22 LONGEST FLOWPATH FROM NODE 40.00 TO NODE 43.00 = 1980.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 43.00 TO NODE 44.00 IS CODE = 56 ---------------------------------------------------------------------------- >>>>>COMPUTE TRAPEZOIDAL CHANNEL FLOW <<<<< >>>>>TRAVELTIME THRU SUBAREA<< <<< -------------------------- - - - - -- - _ ELEVATION DATA: UPSTREAM(FEET) 983.00 DOWNSTREAM(FEET) 970.00 15 CHANNEL LENGTH THRU SUBAREA(FEET) = 900.00 CHANNEL SLOPE _ *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 6.56 ESTIMATED HEIGHT(FEET) * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.985 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA pp Ap LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) COMMERCIAL A 13.89 0.98 0.100 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 56.40 TRAVEL TIME THRU SUBAREA BASED ON VELOCITY(FEET /SEC.) = 4.89 AVERAGE FLOW DEPTH(FEET) = 1.27 TRAVEL TIME(MIN.) = 3.06 TC(MIN.) = 20.76 SUBAREA AREA(ACRES) = 13.89 SUBAREA RUNOFF(CFS) = 23 EFFECTIVE AREA(ACRES) = 37.63 AREA- AVERAGED Fm(INCH /HR) AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 37.6 PEAK FLOW RATE(CFS) _ *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 6.69 ESTIMATED HEIGHT(FEET) 0.0144 = 2.0 = 3.28 SCS CN 32 59 = 0.10 63.92 2.0 = 3.35 END OF SUBAREA CHANNEL FLOW HYDRAULICS: DEPTH(FEET) = 1.35 FLOW VELOCITY(FEET /SEC.) = 5.06 LONGEST FLOWPATH FROM NODE 40.00 TO NODE 44.00 = 2880.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 44.00 TO NODE 45.00 IS CODE = 56 ---------------------------------------------------------------------------- >>>>>COMPUTE TRAPEZOIDAL CHANNEL FLOW <<<<< >>>>>TRAVELTIME THRU SUBAREA<< <<< ---------------------- - - - - -- ELEVATION DATA: UPSTREAM(FEET) = 970.00 DOWNSTREAM(FEET) - 965.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 400.00 CHANNEL SLOPE = 0.0125 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 6.89 ESTIMATED HEIGHT(FEET) = 3.44 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.911 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.44 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 69.17 TRAVEL TIME THRU SUBAREA BASED ON VELOCITY(FEET /SEC.) = 4.93 AVERAGE FLOW DEPTH(FEET) = 1.44 TRAVEL TIME(MIN.) = 1.35 TC(MIN.) = 22.12 SUBAREA AREA(ACRES) = 6.44 SUBAREA RUNOFF(CFS) = 10.51 EFFECTIVE AREA(ACRES) = 44.07 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 44.1 PEAK FLOW RATE(CFS) = 71.93 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 6.94 ESTIMATED HEIGHT(FEET) = 3.47 END OF SUBAREA CHANNEL FLOW HYDRAULICS: DEPTH(FEET) = 1.47 FLOW VELOCITY(FEET /SEC.) = 4.96 LONGEST FLOWPATH FROM NODE 40.00 TO NODE 45.00 = 3280.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 45.00 TO NODE 46.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>(STANDARD CURB SECTION USED) <<<<< Qi UPSTREAM ELEVATION(FEET) = 965.00 DOWNSTREAM ELEVATION(FEET) = 957.50 STREET LENGTH(FEET) = 12.70 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 36.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 24.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 80.06 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.46 HALFSTREET FLOOD WIDTH(FEET) = 8.66 AVERAGE FLOW VELOCITY(FEET /SEC.) = 24.27 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 11.28 STREET FLOW TRAVEL TIME(MIN.) = 0.01 Tc(MIN.) = 22.12 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.911 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 9.96 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 9.96 SUBAREA RUNOFF(CFS) = 16.25 EFFECTIVE AREA(ACRES) = 54.03 AREA - AVERAGED FM(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 54.0 PEAK FLOW RATE(CFS) = 88.16 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.48 HALFSTREET FLOOD WIDTH(FEET) = 9.01 FLOW VELOCITY(FEET /SEC.) = 24.85 DEPTH *VELOCITY(FT *FT /SEC.) = 11.90 LONGEST FLOWPATH FROM NODE 40.00 TO NODE 46.00 = 3292.70 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 46.00 TO NODE 46.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<< <<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 22.12 RAINFALL INTENSITY(INCH /HR) = 1.91 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 54.03 TOTAL STREAM AREA(ACRES) = 54.03 PEAK FLOW RATE(CFS) AT CONFLUENCE = 88.16 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 184.07 21.26 1.957 0.97( 0.10) 0.10 110.0 30.00 2 88.16 22.12 1.911 0.97( 0.10) 0.10 54.0 40.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) 1 270.95 21.26 1.957 0.97( 0.10) 0.10 Ae HEADWATER (ACRES) NODE 161.9 30.00 17 2 267.66 22.12 1.911 0.97( 0.10) 0.10 164.0 40.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 270.95 Tc(MIN.) = 21.26 EFFECTIVE AREA(ACRES) = 161.92 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 164.0 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 46.00 = 4650.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 46.00 TO NODE 47.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<<<<< ----------------------- ELEVATION DATA: UPSTREAM(FEET) = 957.50 DOWNSTREAM(FEET) = 947.30 FLOW LENGTH(FEET) = 680.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 57.0 INCH PIPE IS 46.7 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 17.44 ESTIMATED PIPE DIAMETER(INCH) = 57.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 270.95 PIPE TRAVEL TIME(MIN.) = 0.65 Tc(MIN.) = 21.91 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 47.00 = 5330.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 47.00 TO NODE 47.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< MAINLINE Tc(MIN.) = 21.91 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.922 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 20.21 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 20.21 SUBAREA RUNOFF(CFS) = 33.18 EFFECTIVE AREA(ACRES) = 182.13 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 184.2 PEAK FLOW RATE(CFS) = 299.03 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 47.00 TO NODE 50.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< --------------- - - - - -- ELEVATION DATA: UPSTREAM(FEET) = 947.30 DOWNSTREAM(FEET) = 939.50 FLOW LENGTH(FEET) = 490.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 60.0 INCH PIPE IS 45.9 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 18.53 ESTIMATED PIPE DIAMETER(INCH) = 60.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 299.03 PIPE TRAVEL TIME(MIN.) = 0.44 Tc(MIN.) = 22.35 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 50.00 = 5820.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 50.00 TO NODE 50.00 IS CODE = 81 ---------------------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 22.35 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.899 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN ff.] COMMERCIAL A 15.76 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 15.76 SUBAREA RUNOFF(CFS) = 25.55 EFFECTIVE AREA(ACRES) = 197.89 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 200.0 PEAK FLOW RATE(CFS) = 320.84 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 50.00 TO NODE 50.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 22.35 RAINFALL INTENSITY(INCH /HR) = 1.90 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 197.89 TOTAL STREAM AREA(ACRES) = 200.00 PEAK FLOW RATE(CFS) AT CONFLUENCE = 320.84 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 48.00 TO NODE 49.00 IS CODE = 21 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< >>USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< ------------ - - - - -- - INITIAL SUBAREA FLOW- LENGTH(FEET) 670.00 ELEVATION DATA: UPSTREAM(FEET) = 956.50 DOWNSTREAM(FEET) = 947.00 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE))* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 9.616 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 3.150 SUBAREA Tc AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 4.77 0.98 0.100 32 9.62 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 13.10 TOTAL AREA(ACRES) = 4.77 PEAK FLOW RATE(CFS) = 13.10 FLOW PROCESS FROM NODE 49.00 TO NODE 50.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>(STANDARD CURB SECTION USED)<< <<< ----------------------------------------------- UPSTREAM ELEVATION(FEET) = 947.00 DOWNSTREAM ELEVATION(FEET) = 939.50 STREET LENGTH(FEET) = 680.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 16.89 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.52 19 HALFSTREET FLOOD WIDTH(FEET) = 14.59 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.32 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.74 STREET FLOW TRAVEL TIME(MIN.) = 3.41 Tc(MIN.) = 13.03 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.625 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 3.33 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 3.33 SUBAREA RUNOFF(CFS) = 7.58 EFFECTIVE AREA(ACRES) = 8.10 AREA - AVERAGED FM(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 8.1 PEAK FLOW RATE(CFS) = 18.43 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.54 HALFSTREET FLOOD WIDTH(FEET) = 15.91 FLOW VELOCITY(FEET /SEC.) = 3.36 DEPTH *VELOCITY(FT *FT /SEC.) = 1.80 LONGEST FLOWPATH FROM NODE 48.00 TO NODE 50.00 = 1350.00 FEET. wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww FLOW PROCESS FROM NODE 50.00 TO NODE 50.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 13.03 RAINFALL INTENSITY(INCH /HR) = 2.63 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 8.10 TOTAL STREAM AREA(ACRES) = 8.10 PEAK FLOW RATE(CFS) AT CONFLUENCE = 18.43 ** CONFLUENCE DATA ** STREAM Q Tc STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) 0.98( 0.10) (ACRES) NODE 1 320.84 22.35 1.899 0.98( 0.10) 0.10 197.9 30.00 1 316.56 23.21 1.856 0.97( 0.10) 0.10 200.0 40.00 2 18.43 13.03 2.625 0.97( 0.10) 0.10 8.1 48.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 280.84 13.03 2.625 0.98( 0.10) 0.10 123.5 48.00 2 333.97 22.35 1.899 0.97( 0.10) 0.10 206.0 30.00 3 329.38 23.21 1.856 0.97( 0.10) 0.10 208.1 40.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 333.97 Tc(MIN.) = 22.35 EFFECTIVE AREA(ACRES) = 205.99 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 208.1 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 50.00 = 5820.00 FEET. wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww FLOW PROCESS FROM NODE 50.00 TO NODE 56.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>> COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< 20 ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 939.50 DOWNSTREAM(FEET) = 932.20 FLOW LENGTH(FEET) = 615.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 66.0 INCH PIPE IS 50.7 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 17.06 ESTIMATED PIPE DIAMETER(INCH) = 66.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 333.97 PIPE TRAVEL TIME(MIN.) = 0.60 Tc(MIN.) = 22.95 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 56.00 = 6435.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 56.00 TO NODE 56.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- MAINLINE Tc(MIN.) = 22.95 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.869 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 18.35 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 18.35 SUBAREA RUNOFF(CFS) = 29.26 EFFECTIVE AREA(ACRES) = 224.34 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 226.4 PEAK FLOW RATE(CFS) = 357.67 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 56.00 TO NODE 56.00 IS CODE = 1 --------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 22.95 RAINFALL INTENSITY(INCH /HR) = 1.87 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 224.34 TOTAL STREAM AREA(ACRES) = 226.45 PEAK FLOW RATE(CFS) AT CONFLUENCE = 357.67 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 51.00 TO NODE 52.00 IS CODE = 21 ---------------------------------------------------------------------------- >> >>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<< <<< >>USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< INITIAL SUBAREA FLOW- LENGTH(FEET) = 670.00 ELEVATION DATA: UPSTREAM(FEET) = 956.00 DOWNSTREAM(FEET) = 946.00 TC = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 9.517 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 3.169 SUBAREA Tc AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS TC LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 4.92 0.98 0.100 32 9.52 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 13.60 TOTAL AREA(ACRES) = 4.92 PEAK FLOW RATE(CFS) = 13.60 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 52.00 TO NODE 53.00 IS CODE = 56 21 ------------------------------------------ >>>>>COMPUTE TRAPEZOIDAL CHANNEL FLOW<<<<< >>>>>TRAVELTIME THRU SUBAREA<< <<< ELEVATION DATA: UPSTREAM(FEET) = 946.00 DOWNSTREAM(FEET) = 941.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 380.00 CHANNEL SLOPE = 0.0132 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 5.46 ESTIMATED HEIGHT(FEET) = 2.73 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.845 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 2.57 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 16.78 TRAVEL TIME THRU SUBAREA BASED ON VELOCITY(FEET /SEC.) = 3.37 AVERAGE FLOW DEPTH(FEET) = 0.72 TRAVEL TIME(MIN.) = 1.88 TC(MIN.) = 11.39 SUBAREA AREA(ACRES) = 2.57 SUBAREA RUNOFF(CFS) = 6.35 EFFECTIVE AREA(ACRES) = 7.49 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 7.5 PEAK FLOW RATE(CFS) = 18.52 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 5.52 ESTIMATED HEIGHT(FEET) = 2.76 END OF SUBAREA CHANNEL FLOW HYDRAULICS: DEPTH(FEET) = 0.76 FLOW VELOCITY(FEET /SEC.) = 3.46 LONGEST FLOWPATH FROM NODE 51.00 TO NODE 53.00 = 1050.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 53.00 TO NODE 54.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>(STANDARD CURB SECTION USED)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 942.00 DOWNSTREAM ELEVATION(FEET) = 940.00 STREET LENGTH(FEET) = 380.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) _ ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.66 HALFSTREET FLOOD WIDTH(FEET) = 27.90 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.51 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.65 STREET FLOW TRAVEL TIME(MIN.) = 2.53 Tc(MIN.) _ * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.523 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp LAND USE GROUP (ACRES) (INCH /HR) COMMERCIAL A 7.81 0.98 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0. SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 7.81 SUBAREA RUNOFF(CFS 27.06 13.92 Ap SCS (DECIMAL) CN 0.100 32 98 17.05 22 EFFECTIVE AREA(ACRES) = 15.30 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 15.3 PEAK FLOW RATE(CFS) = 33.40 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.69 HALFSTREET FLOOD WIDTH(FEET) = 29.37 FLOW VELOCITY(FEET /SEC.) = 2.68 DEPTH *VELOCITY(FT *FT /SEC.) = 1.84 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 380.0 FT WITH ELEVATION -DROP = 2.0 FT, IS 21.8 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 54.00 LONGEST FLOWPATH FROM NODE 51.00 TO NODE 54.00 = 1430.00 FEET. FLOW PROCESS FROM NODE 54.00 TO NODE 55.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>> USING COMPUTER - ESTIMATED PIPESIZE (NON- PRESSURE FLOW)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 939.50 DOWNSTREAM(FEET) = 935.00 FLOW LENGTH(FEET) = 260.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 27.0 INCH PIPE IS 19.0 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 11.19 ESTIMATED PIPE DIAMETER(INCH) = 27.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 33.40 PIPE TRAVEL TIME(MIN.) = 0.39 Tc(MIN.) = 14.31 LONGEST FLOWPATH FROM NODE 51.00 TO NODE 55.00 = 1690.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 55.00 TO NODE 55.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 14.31 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.482 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 4.83 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 4.83 SUBAREA RUNOFF(CFS) = 10.36 EFFECTIVE AREA(ACRES) = 20.13 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 20.1 PEAK FLOW RATE(CFS) = 43.19 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 55.00 TO NODE 56.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED) <<<<< UPSTREAM ELEVATION(FEET) = 935.00 DOWNSTREAM ELEVATION(FEET) = 932.20 STREET LENGTH(FEET) = 600.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 46.58 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: 23 STREET FLOW DEPTH(FEET) = 0.75 HALFSTREET FLOOD WIDTH(FEET) = 32.60 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.83 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.13 STREET FLOW TRAVEL TIME(MIN.) = 3.54 Tc(MIN.) = 17.85 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.173 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 3.62 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 3.62 SUBAREA RUNOFF(CFS) = 6.76 EFFECTIVE AREA(ACRES) = 23.75 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 23.8 PEAK FLOW RATE(CFS) = 44.37 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.74 HALFSTREET FLOOD WIDTH(FEET) = 32.18 FLOW VELOCITY(FEET /SEC.) = 2.79 DEPTH *VELOCITY(FT *FT /SEC.) = 2.07 LONGEST FLOWPATH FROM NODE 51.00 TO NODE 56.00 = 2290.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 56.00 TO NODE 56.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES <<<<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 17.85 RAINFALL INTENSITY(INCH /HR) = 2.17 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 23.75 TOTAL STREAM AREA(ACRES) = 23.75 PEAK FLOW RATE(CFS) AT CONFLUENCE = 44.37 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 313.32 13.65 2.553 0.98( 0.10) 0.10 141.8 48.00 1 357.67 22.95 1.869 0.97( 0.10) 0.10 224.3 30.00 1 352.66 23.82 1.828 0.97( 0.10) 0.10 226.4 40.00 2 44.37 17.85 2.173 0.97( 0.10) 0.10 23.8 51.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE STREAM Q NUMBER (CFS) 1 353.46 2 377.70 3 395.53 4 389.65 CABLE * * Tc Intensity Fp(Fm) (MIN.) (INCH /HR) (INCH /HR) 13.65 2.553 0.98( 0.10) 17.85 2.173 0.98( 0.10) 22.95 1.869 0.97( 0.10) 23.82 1.828 0.97( 0.10) Ap Ae HEADWATER (ACRES) NODE 0.10 160.0 48.00 0.10 202.8 51.00 0.10 248.1 30.00 0.10 250.2 40.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 395.53 Tc(MIN.) = 22.95 EFFECTIVE AREA(ACRES) = 248.09 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 250.2 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 56.00 = 6435.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 56.00 TO NODE 57.00 IS CODE = 31 24 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< --------------- -- ELEVATION DATA: UPSTREAM(FEET) = 932.20 DOWNSTREAM(FEET) = 930.00 FLOW LENGTH(FEET) = 150.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 66.0 INCH PIPE IS 54.0 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 19.02 ESTIMATED PIPE DIAMETER(INCH) = 66.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 395.53 PIPE TRAVEL TIME(MIN.) = 0.13 TC(MIN.) = 23.08 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 57.00 = 6585.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 57.00 TO NODE 57.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 23.08 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.863 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 4.77 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 4.77 SUBAREA RUNOFF(CFS) = 7.58 EFFECTIVE AREA(ACRES) = 252.86 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 255.0 PEAK FLOW RATE(CFS) = 401.68 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 57.00 TO NODE 73.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< --------------- - - - - -- ELEVATION DATA: UPSTREAM(FEET) = 930.00 DOWNSTREAM(FEET) = 920.00 FLOW LENGTH(FEET) = 760.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 69.0 INCH PIPE IS 53.7 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 18.52 ESTIMATED PIPE DIAMETER(INCH) = 69.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 401.68 PIPE TRAVEL TIME(MIN.) = 0.68 TC(MIN.) = 23.77 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 73.00 = 7345.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 81 ---------------------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 23.77 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.830 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL B 3.82 0.75 0.100 56 COMMERCIAL A 19.41 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.94 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 23.23 SUBAREA RUNOFF(CFS) = 36.30 EFFECTIVE AREA(ACRES) = 276.09 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 278.2 PEAK FLOW RATE(CFS) = 430.63 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 11 25 ---------------------------------------------------------------------------- >>>>> CONFLUENCE MEMORY BANK # 1 WITH THE MAIN- STREAM MEMORY<<<<< ** MAIN STREAM CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 400.27 14.49 2.463 0.97( 0.10) 0.10 188.0 48.00 2 419.29 18.66 2.116 0.97( 0.10) 0.10 230.8 51.00 3 430.63 23.77 1.830 0.97( 0.10) 0.10 276.1 30.00 4 424.18 24.63 1.791 0.97( 0.10) 0.10 278.2 40.00 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 73.00 = 7345.00 FEET. ** MEMORY BANK # 1 CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 278.66 27.45 1.679 0.91( 0.13) 0.15 193.0 10.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 73.00 = 8776.00 FEET. ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 621.95 14.49 2.463 0.94( 0.11) 0.12 289.8 48.00 2 662.32 18.66 2.116 0.94( 0.11) 0.12 362.0 51.00 3 695.54 23.77 1.830 0.94( 0.11) 0.12 443.2 30.00 4 692.46 24.63 1.791 0.94( 0.11) 0.12 451.4 40.00 5 674.63 27.45 1.679 0.94( 0.11) 0.12 471.2 10.00 TOTAL AREA(ACRES) = 471.2 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 695.54 Tc(MIN.) = 23.766 EFFECTIVE AREA(ACRES) = 443.19 AREA- AVERAGED Fm(INCH /HR) = 0.11 AREA - AVERAGED Fp(INCH /HR) = 0.94 AREA- AVERAGED Ap = 0.12 TOTAL AREA(ACRES) = 471.2 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 73.00 = 8776.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 12 ---------------------------------------------------------------------------- >>>>>CLEAR MEMORY BANK # 1 <<<<< ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) RAINFALL INTENSITY(INCH /HR) AREA- AVERAGED Fm(INCH /HR) _ AREA - AVERAGED Fp(INCH /HR) _ AREA- AVERAGED Ap = 0.12 EFFECTIVE STREAM AREA(ACRES) TOTAL STREAM AREA(ACRES) _ PEAK FLOW RATE(CFS) AT CONFI 23.77 1.83 0.11 0.94 443.19 471.20 UENCE = 695.54 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 60.00 TO NODE 61.00 IS CODE = 21 ---------------------------------------------------------------------------- >> >>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS <<<<< >>USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< ------------------------- INITIAL SUBAREA FLOW- LENGTH(FEET) = 930.00 ELEVATION DATA: UPSTREAM(FEET) = 1011.00 DOWNSTREAM(FEET) = 992.00 26 TC = K *[(LENGTH ** 3.00) /(ELEVATION CHANG] SUBAREA ANALYSIS USED MINIMUM TC(MIN.) _ * 25 YEAR RAINFALL INTENSITY(INCH /HR) _ SUBAREA TC AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA LAND USE GROUP (ACRES) MMERCIAL A 2 89 3)]* *0.20 10.191 3.042 Fp Ap SCS Tc (INCH /HR) (DECIMAL) CN (MIN.) 0.98 0.100 32 10.19 CO SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 7.66 TOTAL AREA(ACRES) = 2.89 PEAK FLOW RATE(CFS) = 7.66 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 61.00 TO NODE 62.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>(STANDARD CURB SECTION USED)<< <<< UPSTREAM ELEVATION(FEET) = 992.00 DOWNSTREAM ELEVATION(FEET) = 991.60 STREET LENGTH(FEET) = 170.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 36.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 24.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 12.00 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.61 HALFSTREET FLOOD WIDTH(FEET) = 12.80 AVERAGE FLOW VELOCITY(FEET /SEC.) = 1.86 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.14 STREET FLOW TRAVEL TIME(MIN.) = 1.52 Tc(MIN.) = 11.72 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.798 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 3.57 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 3.57 SUBAREA RUNOFF(CFS) = 8.68 EFFECTIVE AREA(ACRES) = 6.46 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 6.5 PEAK FLOW RATE(CFS) = 15.70 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.68 HALFSTREET FLOOD WIDTH(FEET) = 16.55 FLOW VELOCITY(FEET /SEC.) = 1.89 DEPTH *VELOCITY(FT *FT /SEC.) = 1.28 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 62.00 = 1100.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 62.00 TO NODE 63.00 IS CODE = 61 --------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED)<< <<< UPSTREAM ELEVATION(FEET) = 991.60 DOWNSTREAM ELEVATION(FEET) = 991.30 STREET LENGTH(FEET) = 165.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 36.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 24.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 27 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 19.52 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.75 HALFSTREET FLOOD WIDTH(FEET) = 24.23 AVERAGE FLOW VELOCITY(FEET /SEC.) = 1.71 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.29 STREET FLOW TRAVEL TIME(MIN.) = 1.61 Tc(MIN.) = 13.32 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.590 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 3.41 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 3.41 SUBAREA RUNOFF(CFS) = 7.65 EFFECTIVE AREA(ACRES) = 9.87 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 9.9 PEAK FLOW RATE(CFS) = 22.14 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.78 HALFSTREET FLOOD WIDTH(FEET) = 26.86 FLOW VELOCITY(FEET /SEC.) = 1.73 DEPTH *VELOCITY(FT *FT /SEC.) = 1.35 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 63.00 = 1265.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 63.00 TO NODE 64.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED)<<<<< -------------------------------------------- UPSTREAM ELEVATION(FEET) = 991.30 DOWNSTREAM ELEVATION(FEET) = 989.80 STREET LENGTH(FEET) = 210.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 36.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 24.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 26.89 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.67 HALFSTREET FLOOD WIDTH(FEET) = 16.17 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.29 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.22 STREET FLOW TRAVEL TIME(MIN.) = 1.06 Tc(MIN.) = 14.39 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.473 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 4.44 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 4.44 SUBAREA RUNOFF(CFS) = 9.49 EFFECTIVE AREA(ACRES) = 14.31 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 28 TOTAL AREA(ACRES) = 14.3 PEAK FLOW RATE(CFS) = 30.60 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.70 HALFSTREET FLOOD WIDTH(FEET) = 18.98 FLOW VELOCITY(FEET /SEC.) = 3.34 DEPTH *VELOCITY(FT *FT /SEC.) = 2.35 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 64.00 = 1475.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 64.00 TO NODE 65.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON- PRESSURE FLOW)<< <<< -------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 989.80 DOWNSTREAM(FEET) = 981.00 FLOW LENGTH(FEET) = 660.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 27.0 INCH PIPE IS 19.6 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 9.89 ESTIMATED PIPE DIAMETER(INCH) = 27.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 30.60 PIPE TRAVEL TIME(MIN.) = 1.11 TC(MIN.) = 15.50 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 65.00 = 2135.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 65.00 TO NODE 65.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 15.50 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.365 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.46 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.46 SUBAREA RUNOFF(CFS) = 21.35 EFFECTIVE AREA(ACRES) = 24.77 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 24.8 PEAK FLOW RATE(CFS) = 50.55 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 65.00 TO NODE 66.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) < <<< ------------------------- ELEVATION DATA: UPSTREAM(FEET) = 981.00 DOWNSTREAM(FEET) = 969.00 FLOW LENGTH(FEET) = 640.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 30.0 INCH PIPE IS 22.7 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.66 ESTIMATED PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 50.55 PIPE TRAVEL TIME(MIN.) = 0.84 TC(MIN.) = 16.34 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 66.00 = 2775.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 66.00 TO NODE 66.00 IS CODE = 81 ---------------------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 16.34 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.291 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL B 0.92 0.75 0.100 56 COMMERCIAL A 9.22 0.98 0.100 32 29 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.95 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.14 SUBAREA RUNOFF(CFS) = 20.04 EFFECTIVE AREA(ACRES) = 34.91 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 34.9 PEAK FLOW RATE(CFS) = 68.94 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 66.00 TO NODE 67.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< --------------- -- ELEVATION DATA: UPSTREAM(FEET) = 969.00 DOWNSTREAM(FEET) = 962.50 FLOW LENGTH(FEET) = 680.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 39.0 INCH PIPE IS 28.3 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 10.70 ESTIMATED PIPE DIAMETER(INCH) = 39.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 68.94 PIPE TRAVEL TIME(MIN.) = 1.06 Tc(MIN.) = 17.40 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 67.00 = 3455.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 67.00 TO NODE 67.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 17.40 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.206 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL B 3.43 0.75 0.100 56 COMMERCIAL A 7.34 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.90 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.77 SUBAREA RUNOFF(CFS) = 20.51 EFFECTIVE AREA(ACRES) = 45.68 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.95 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 45.7 PEAK FLOW RATE(CFS) = 86.79 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 67.00 TO NODE 68.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< --------------- -- ELEVATION DATA: UPSTREAM(FEET) = 962.50 DOWNSTREAM(FEET) = 955.80 FLOW LENGTH(FEET) = 640.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 42.0 INCH PIPE IS 30.2 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 11.74 ESTIMATED PIPE DIAMETER(INCH) = 42.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 86.79 PIPE TRAVEL TIME(MIN.) = 0.91 TC(MIN.) = 18.31 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 68.00 = 4095.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 68.00 TO NODE 68.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 18.31 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.140 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL B 0.24 0.75 0.100 56 30 COMMERCIAL A 10.05 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.29 SUBAREA RUNOFF(CFS) = 18.92 EFFECTIVE AREA(ACRES) = 55.97 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.96 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 56.0 PEAK FLOW RATE(CFS) = 102.99 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 68.00 TO NODE 69.00 IS CODE = 31 >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< ------------------------ ELEVATION DATA: UPSTREAM(FEET) = 955.80 DOWNSTREAM(FEET) = 942.50 FLOW LENGTH(FEET) = 1350.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 45.0 INCH PIPE IS 32.8 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 11.95 ESTIMATED PIPE DIAMETER(INCH) = 45.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 102.99 PIPE TRAVEL TIME(MIN.) = 1.88 TC(MIN.) = 20.19 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 69.00 = 5445.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 69.00 TO NODE 69.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< MAINLINE TC(MIN.) = 20.19 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 2.018 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.54 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.54 SUBAREA RUNOFF(CFS) = 18.22 EFFECTIVE AREA(ACRES) = 66.51 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.96 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 66.5 PEAK FLOW RATE(CFS) = 115.06 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 69.00 TO NODE 70.00 IS CODE = 31 >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON- PRESSURE FLOW) <<<<< --------------- - - - - -- ELEVATION DATA: UPSTREAM(FEET) = 942.50 DOWNSTREAM(FEET) = 929.50 FLOW LENGTH(FEET) = 930.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 42.0 INCH PIPE IS 34.1 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 13.74 ESTIMATED PIPE DIAMETER(INCH) = 42.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 115.06 PIPE TRAVEL TIME(MIN.) = 1.13 TC(MIN.) = 21.32 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 70.00 = 6375.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 70.00 TO NODE 70.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 21.32 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.953 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 14.30 0.98 0.100 32 31 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 14.30 SUBAREA RUNOFF(CFS) = 23.88 EFFECTIVE AREA(ACRES) = 80.81 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.96 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 80.8 PEAK FLOW RATE(CFS) = 135.06 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 70.00 TO NODE 71.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 929.50 DOWNSTREAM(FEET) = 923.10 FLOW LENGTH(FEET) = 765.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 51.0 INCH PIPE IS 37.7 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.00 ESTIMATED PIPE DIAMETER(INCH) = 51.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 135.06 PIPE TRAVEL TIME(MIN.) = 1.06 Tc(MIN.) = 22.39 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 71.00 = 7140.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 71.00 TO NODE 71.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE Tc(MIN.) = 22.39 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.897 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.23 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.23 SUBAREA RUNOFF(CFS) = 16.57 EFFECTIVE AREA(ACRES) = 91.04 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.96 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 91.0 PEAK FLOW RATE(CFS) = 147.55 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 71.00 TO NODE 72.00 IS CODE = 41 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING USER - SPECIFIED PIPESIZE (EXISTING ELEMENT) <<<<< ELEVATION DATA: UPSTREAM(FEET) = 923.10 DOWNSTREAM(FEET) = 922.00 FLOW LENGTH(FEET) = 670.00 MANNING'S N = 0.013 ASSUME FULL- FLOWING PIPELINE PIPE -FLOW VELOCITY(FEET /SEC.) = 7.51 PIPE FLOW VELOCITY = (TOTAL FLOW) /(PIPE CROSS SECTION AREA) GIVEN PIPE DIAMETER(INCH) = 60.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 147.55 PIPE TRAVEL TIME(MIN.) = 1.49 Tc(MIN.) = 23.87 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 72.00 = 7810.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 72.00 TO NODE 73.00 IS CODE = 41 --------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING USER - SPECIFIED PIPESIZE (EXISTING ELEMENT) <<<<< ELEVATION DATA: UPSTREAM(FEET) = 922.00 DOWNSTREAM(FEET) = 920.00 FLOW LENGTH(FEET) = 670.00 MANNING'S N = 0.013 ASSUME FULL - FLOWING PIPELINE PIPE -FLOW VELOCITY(FEET /SEC.) = 7.51 PIPE FLOW VELOCITY = (TOTAL FLOW) /(PIPE CROSS SECTION AREA) 32 GIVEN PIPE DIAMETER(INCH) = 60.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 147.55 PIPE TRAVEL TIME(MIN.) = 1.49 Tc(MIN.) = 25:36 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 73.00 = 8480.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE Tc(MIN.) = 25.36 * 25 YEAR RAINFALL INTENSITY(INCH /HR) = 1.760 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 16.74 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 16.74 SUBAREA RUNOFF(CFS) = 25.05 EFFECTIVE AREA(ACRES) = 107.78 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 107.8 PEAK FLOW RATE(CFS) = 161.40 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 1 >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< » » >AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES <<<<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 25.36 RAINFALL INTENSITY(INCH /HR) = 1.76 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 107.78 TOTAL STREAM AREA(ACRES) = 107.78 PEAK FLOW RATE(CFS) AT CONFLUENCE = 161.40 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 621.95 14.49 2.463 0.94( 0.11) 0.12 289.8 48.00 1 662.32 18.66 2.116 0.94( 0.11) 0.12 362.0 51.00 1 695.54 23.77 1.830 0.94( 0.11) 0.12 443.2 30.00 1 692.46 24.63 1.791 0.94( 0.11) 0.12 451.4 40.00 1 674.63 27.45 1.679 0.94( 0.11) 0.12 471.2 10.00 2 161.40 25.36 1.760 0.97( 0.10) 0.10 107.8 60.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 753.11 14.49 2.463 0.95( 0.11) 0.11 351.4 48.00 2 806.50 18.66 2.116 0.95( 0.11) 0.11 441.3 51.00 3 853.16 23.77 1.830 0.95( 0.11) 0.11 544.2 30.00 4 852.16 24.63 1.791 0.95( 0.11) 0.11 556.1 40.00 5 849.27 25.36 1.760 0.95( 0.11) 0.11 564.3 60.00 6 828.10 27.45 1.679 0.94( 0.11) 0.12 579.0 10.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 853.16 Tc(MIN.) = 23.77 EFFECTIVE AREA(ACRES) = 544.21 AREA- AVERAGED FM(INCH /HR) = 0.11 AREA- AVERAGED Fp(INCH /HR) = 0.95 AREA- AVERAGED Ap = 0.11 33 TOTAL AREA(ACRES) = 579.0 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 73.00 = 8776.00 FEET. END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 579.0 TC(MIN.) = 23.77 EFFECTIVE AREA(ACRES) = 544.21 AREA- AVERAGED Fm(INCH /HR)= 0.11 AREA - AVERAGED Fp(INCH /HR) = 0.95 AREA- AVERAGED Ap = 0.114 PEAK FLOW RATE(CFS) = 853.16 ** PEAK FLOW RATE TABLE ** STREAM Q TC Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 753.11 14.49 2.463 0.95( 0.11) 0.11 351.4 48.00 2 806.50 18.66 2.116 0.95( 0.11) 0.11 441.3 51.00 3 853.16 23.77 1.830 0.95( 0.11) 0.11 544.2 30.00 4 852.16 24.63 1.791 0.95( 0.11) 0.11 556.1 40.00 5 849.27 25.36 1.760 0.95( 0.11) 0.11 564.3 60.00 6 828.10 27.45 1.679 0.94( 0.11) 0.12 579.0 10.00 END OF RATIONAL METHOD ANALYSIS 38 34 RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE (Reference: 1986 SAN BERNARDINO CO. HYDROLOGY CRITERION) (c) Copyright 1983 -2009 Advanced Engineering Software (aes) Ver. 16.0 Release Date: 04/01/2009 License ID 1224 Analysis prepared by: County of San Bernardino 825 East.3rd Street * * * * * * * * * * * * * * * * * * * * * * * * ** DESCRIPTION OF STUDY * * * * * * * * * * * * * * * * * * * * * * * * ** • S.Fontana S.D.Plan Lines DZ(14, 15, and 16) • 100- YR(AMC- II)Integrated Rational Method /Unit - Hydrograph Study • Santa Ana Avenue and Banana Avenue in the South Fontana Area ******************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FILE NAME: SAB100R.DAT TIME /DATE OF STUDY: 08:59 05/04/2011 USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: --------------------- -- *TIME -OF- CONCENTRATION MODEL*-- USER SPECIFIED STORM EVENT(YEAR) = 100.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 24.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE = 0.95 *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) = 1.3500 *ANTECEDENT MOISTURE CONDITION (AMC) II 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 30.0 20.0 0.018/0.018/0.020 0 67 2.00 0.0313 0.167 0.0150 GLOBAL STREET FLOW -DEPTH CONSTRAINTS: 1. Relative Flow -Depth = 0.20 FEET as (Maximum Allowable Street Flow Depth) - (Top -of -Curb) 2. (Depth) *(Velocity) Constraint = 6.0 (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 UNIT - HYDROGRAPH MODEL SELECTIONS /PARAMETERS: WATERSHED LAG = 0.80 * Tc VALLEY(DEVELOPED) S -GRAPH USED. SIERRA MADRE DEPTH -AREA FACTORS USED. AREA- AVERAGED DURATION RAINFALL(INCH) 5- MINUTES 0.50 30- MINUTES 1.02 1 -HOUR 1.35 3 -HOUR 2.31 6 -HOUR 3.25 24 -HOUR 7.50 *ANTECEDENT MOISTURE CONDITION (AMC) II ASSUMED FOR UNIT HYDROGRAPH METHOD* 1 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 10.00 TO NODE 11.00 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) = 1024.00 DOWNSTREAM(FEET) = 1003.00 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 10.433 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.856 SUBAREA Tc AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 6.63 0.98 0.100 32 10.43 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 22.43 TOTAL AREA(ACRES) = 6.63 PEAK FLOW RATE(CFS) = 22.43 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 11.00 TO NODE 12.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>(STANDARD CURB SECTION USED) <<<<< ------------------------------------------------ UPSTREAM ELEVATION(FEET) = 1003.00 DOWNSTREAM ELEVATION(FEET) = 1002.50 STREET LENGTH(FEET) = 180.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 28.23 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.71 HALFSTREET FLOOD WIDTH(FEET) = 30.53 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.04 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.45 STREET FLOW TRAVEL TIME(MIN.) = 1.47 Tc(MIN.) = 11.91 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.562 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 3.72 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 3.72 SUBAREA RUNOFF(CFS) = 11.60 EFFECTIVE AREA(ACRES) = 10.35 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 10.4 PEAK FLOW RATE(CFS) = 32.28 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.73 HALFSTREET FLOOD WIDTH(FEET) = 31.69 FLOW VELOCITY(FEET /SEC.) = 2.11 DEPTH *VELOCITY(FT *FT /SEC.) = 1.55 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 180.0 FT WITH ELEVATION -DROP = 0.5 FT, IS 15.0 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 12.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 12.00 = 1180.00 FEET. 2 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 12.00 TO NODE 13.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>(STANDARD CURB SECTION USED)<< <<< -------------------------------------------------- UPSTREAM ELEVATION(FEET) = 1002.50 DOWNSTREAM ELEVATION(FEET) = 1001.20 STREET LENGTH(FEET) = 320.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 41.63 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.74 HALFSTREET FLOOD WIDTH(FEET) = 32.24 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.60 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.94 STREET FLOW TRAVEL TIME(MIN.) = 2.05 Tc(MIN.) = 13.96 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.238 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.61 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 6.61 SUBAREA RUNOFF(CFS) = 18.69 EFFECTIVE AREA(ACRES) = 16.96 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 17.0 PEAK FLOW RATE(CFS) = 47.94 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.77 HALFSTREET FLOOD WIDTH(FEET) = 33.52 FLOW VELOCITY(FEET /SEC.) = 2.71 DEPTH *VELOCITY(FT *FT /SEC.) = 2.09 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 320.0 FT WITH ELEVATION -DROP = 1.3 FT, IS 24.2 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 13.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 13.00 = 1500.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 13.00 TO NODE 14.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>(STANDARD CURB SECTION USED)<< <<< - --------------- - - - -- UPSTREAM ELEVATION(FEET) = 1001.20 DOWNSTREAM ELEVATION(FEET) = 999.80 STREET LENGTH(FEET) = 310.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 24.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 16.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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 3 * *TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 56.39 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.84 HALFSTREET FLOOD WIDTH(FEET) = 32.51 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.08 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.58 STREET FLOW TRAVEL TIME(MIN.) = 1.68 Tc(MIN.) = 15.64 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.025 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.41 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 6.41 SUBAREA RUNOFF(CFS) = 16.89 EFFECTIVE AREA(ACRES) = 23.37 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 23.4 PEAK FLOW RATE(CFS) = 61.58 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.86 HALFSTREET FLOOD WIDTH(FEET) = 33.43 FLOW VELOCITY(FEET /SEC.) = 3.15 DEPTH *VELOCITY(FT *FT /SEC.) = 2.70 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 310.0 FT WITH ELEVATION -DROP = 1.4 FT, IS 23.9 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 14.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 14.00 = 1810.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 14.00 TO NODE 15.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED)<< <<< UPSTREAM ELEVATION(FEET) = 999.80 DOWNSTREAM ELEVATION(FEET) = 998.50 STREET LENGTH(FEET) = 230.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 67.41 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.81 HALFSTREET FLOOD WIDTH(FEET) = 35.29 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.35 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.70 STREET FLOW TRAVEL TIME(MIN.) = 1.14 Tc(MIN.) = 16.78 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.900 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 4.63 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 4.63 SUBAREA RUNOFF(CFS) = 11.68 EFFECTIVE AREA(ACRES) = 28.00 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 28.0 PEAK FLOW RATE(CFS) = 70.61 4 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.82 HALFSTREET FLOOD WIDTH(FEET) = 35.78 FLOW VELOCITY(FEET /SEC.) = 3.39 DEPTH *VELOCITY(FT *FT /SEC.) = 2.77 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 230.0 FT WITH ELEVATION -DROP = 1.3 FT, IS 19.1 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 15.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 15.00 = 2040.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 15.00 TO NODE 16.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED) <<<<< ------------------------------- UPSTREAM ELEVATION(FEET) = 998.50 DOWNSTREAM ELEVATION(FEET) = 989.00 STREET LENGTH(FEET) = 680.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 24.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 16.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 95.12 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.83 HALFSTREET FLOOD WIDTH(FEET) = 32.09 AVERAGE FLOW VELOCITY(FEET /SEC.) = 5.35 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 4.43 STREET FLOW TRAVEL TIME(MIN.) = 2.12 TC(MIN.) = 18.90 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.700 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 20.92 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 20.92 SUBAREA RUNOFF(CFS) = 49.00 EFFECTIVE AREA(ACRES) = 48.92 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 48.9 PEAK FLOW RATE(CFS) = 114.58 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.87 HALFSTREET FLOOD WIDTH(FEET) = 34.04 FLOW VELOCITY(FEET /SEC.) = 5.63 DEPTH *VELOCITY(FT *FT /SEC.) = 4.88 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 680.0 FT WITH ELEVATION -DROP = 9.5 FT, IS 74.0 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 16.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 16.00 = 2720.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 16.00 TO NODE 17.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED)<< <<< ---------------------------------------- UPSTREAM ELEVATION(FEET) = 989.00 DOWNSTREAM ELEVATION(FEET) = 985.00 STREET LENGTH(FEET) = 320.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 24.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 16.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 5 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 125.76 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.90 HALFSTREET FLOOD WIDTH(FEET) = 35.69 AVERAGE FLOW VELOCITY(FEET /SEC.) = 5.55 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 5.00 STREET FLOW TRAVEL TIME(MIN.) = 0.96 Tc(MIN.) = 19.86 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.621 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 9.84 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 9.84 SUBAREA RUNOFF(CFS) = 22.35 EFFECTIVE AREA(ACRES) = 58.76 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 58.8 PEAK FLOW RATE(CFS) = 133.44 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.91 HALFSTREET FLOOD WIDTH(FEET) = 36.36 FLOW VELOCITY(FEET /SEC.) = 5.65 DEPTH *VELOCITY(FT *FT /SEC.) = 5.16 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 320.0 FT WITH ELEVATION -DROP = 4.0 FT, IS 41.3 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 17.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 17.00 = 3040.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 17.00 TO NODE 18.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>> USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< --------------- - - -- ELEVATION DATA: UPSTREAM(FEET) = 985.00 DOWNSTREAM(FEET) = 980.00 FLOW LENGTH(FEET) = 380.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 45.0 INCH PIPE IS 36.4 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 13.96 ESTIMATED PIPE DIAMETER(INCH) = 45.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 133.44 PIPE TRAVEL TIME(MIN.) = 0.45 Tc(MIN.) = 20.31 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 18.00 = 3420.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 18.00 TO NODE 18.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 20.31 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.586 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.90 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.90 SUBAREA RUNOFF(CFS) = 24.41 EFFECTIVE AREA(ACRES) = 69.66 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 69.7 PEAK FLOW RATE(CFS) = 155.98 11 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 18.00 TO NODE 19.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 980.00 DOWNSTREAM(FEET) = 972.50 FLOW LENGTH(FEET) = 590.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 38.8 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 14.32 ESTIMATED PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 155.98 PIPE TRAVEL TIME(MIN.) = 0.69 TC(MIN.) = 21.00 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 19.00 = 4010.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 19.00 TO NODE 19.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 21.00 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.534 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 18.80 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 18.80 SUBAREA RUNOFF(CFS) = 41.23 EFFECTIVE AREA(ACRES) = 88.46 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 88.5 PEAK FLOW RATE(CFS) = 194.02 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 19.00 TO NODE 20.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< ELEVATION DATA UPSTREAM(FEET) = 972.50 DOWNSTREAM(FEET) = 963.50 FLOW LENGTH(FEET) = 680.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 54.0 INCH PIPE IS 39.3 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 15.64 ESTIMATED PIPE DIAMETER(INCH) = 54.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 194.02 PIPE TRAVEL TIME(MIN.) = 0.72 TC(MIN.) = 21.73 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 20.00 = 4690.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 20.00 TO NODE 20.00 IS CODE = 81 ---------------------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 21.73 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.483 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 21.54 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 21.54 SUBAREA RUNOFF(CFS) = 46.25 EFFECTIVE AREA(ACRES) = 110.00 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 110.0 PEAK FLOW RATE(CFS) = 236.20 7 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 20.00 TO NODE 21.00 IS CODE = 31 >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 963.50 DOWNSTREAM(FEET) = 940.50 FLOW LENGTH(FEET) = 1336.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 54.0 INCH PIPE IS 41.6 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 17.98 ESTIMATED PIPE DIAMETER(INCH) = 54.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 236.20 PIPE TRAVEL TIME(MIN.) = 1.24 TC(MIN.) = 22.96 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 21.00 = 6026.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 21.00 TO NODE 21.00 IS CODE = 81 >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 22.96 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.402 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL B 6.94 0.75 0.100 56 COMMERCIAL A 33.55 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.94 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 40.49 SUBAREA RUNOFF(CFS) = 84.13 EFFECTIVE AREA(ACRES) = 150.49 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.96 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 150.5 PEAK FLOW RATE(CFS) = 312.29 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 21.00 TO NODE 22.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 940.50 DOWNSTREAM(FEET) = 932.50 FLOW LENGTH(FEET) = 1400.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 75.0 INCH PIPE IS 55.5 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.83 ESTIMATED PIPE DIAMETER(INCH) = 75.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 312.29 PIPE TRAVEL TIME(MIN.) = 1.82 TC(MIN.) = 24.78 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 22.00 = 7426.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 22.00 TO NODE 22.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 24.78 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.295 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN SCHOOL A 5.33 0.98 0.600 32 SCHOOL B 12.21 0.75 0.600 56 COMMERCIAL B 1.97 0.75 0.100 56 COMMERCIAL A 23.00 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.84 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.306 SUBAREA AREA(ACRES) = 42.51 SUBAREA RUNOFF(CFS) = 77.91 EFFECTIVE AREA(ACRES) = 193.00 AREA- AVERAGED Fm(INCH /HR) = 0.13 AREA - AVERAGED Fp(INCH /HR) = 0.91 AREA- AVERAGED Ap = 0.15 TOTAL AREA(ACRES) = 193.0 PEAK FLOW RATE(CFS) = 375.65 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 22.00 TO NODE 73.00 IS CODE = 41 >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>> USING USER - SPECIFIED PIPESIZE (EXISTING ELEMENT)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 932.50 DOWNSTREAM(FEET) = 920.00 FLOW LENGTH(FEET) = 1350.00 MANNING'S N = 0.013 ASSUME FULL- FLOWING PIPELINE PIPE -FLOW VELOCITY(FEET /SEC.) = 15.81 PIPE FLOW VELOCITY = (TOTAL FLOW) /(PIPE CROSS SECTION AREA) GIVEN PIPE DIAMETER(INCH) = 66.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 375.65 PIPE TRAVEL TIME(MIN.) = 1.42 Tc(MIN.) = 26.21 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 73.00 = 8776.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 10 ---------------------------------------------------------------------------- >> >>>MAIN- STREAM MEMORY COPIED ONTO MEMORY BANK # 1 <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 30.00 TO NODE 31.00 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) = 1013.00 DOWNSTREAM(FEET) = 997.50 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 11.087 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.718 SUBAREA Tc AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 6.47 0.98 0.100 32 11.09 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 21.08 TOTAL AREA(ACRES) = 6.47 PEAK FLOW RATE(CFS) = 21.08 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 31.00 TO NODE 32.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>(STANDARD CURB SECTION USED)<< <<< UPSTREAM ELEVATION(FEET) = 997.50 DOWNSTREAM ELEVATION(FEET) = 996.50 STREET LENGTH(FEET) = 320.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 31.03 ** *STREET FLOWING FULL * ** N STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.72 HALFSTREET FLOOD WIDTH(FEET) = 30.83 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.18 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.56 STREET FLOW TRAVEL TIME(MIN.) = 2.45 Tc(MIN.) = 13.53 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.299 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.90 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 6.90 SUBAREA RUNOFF(CFS) = 19.88 EFFECTIVE AREA(ACRES) = 13.37 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 13.4 PEAK FLOW RATE(CFS) = 38.52 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.75 HALFSTREET FLOOD WIDTH(FEET) = 32.73 FLOW VELOCITY(FEET /SEC.) = 2.32 DEPTH *VELOCITY(FT *FT /SEC.) = 1.75 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 320.0 FT WITH ELEVATION -DROP = 1.0 FT, IS 24.4 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 32.00 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 32.00 = 1320.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 32.00 TO NODE 33.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>(STANDARD CURB SECTION USED) <<<<< ---------------------------------- UPSTREAM ELEVATION(FEET) = 996.50 DOWNSTREAM ELEVATION(FEET) = 995.50 STREET LENGTH(FEET) = 320.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 47.59 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.79 HALFSTREET FLOOD WIDTH(FEET) = 34.74 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.46 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.95 STREET FLOW TRAVEL TIME(MIN.) = 2.17 Tc(MIN.) = 15.70 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.017 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.90 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 6.90 SUBAREA RUNOFF(CFS) = 18.13 EFFECTIVE AREA(ACRES) = 20.27 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 20.3 PEAK FLOW RATE(CFS) = 53.27 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.82 HALFSTREET FLOOD WIDTH(FEET) = 35.90 10 FLOW VELOCITY(FEET /SEC.) = 2.54 DEPTH *VELOCITY(FT *FT /SEC.) = 2.08 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 320.0 FT WITH ELEVATION -DROP = 1.0 FT, IS 24.4 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 33.00 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 33.00 = 1640.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 33.00 TO NODE 34.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED)<< <<< ------------------------------------------ UPSTREAM ELEVATION(FEET) = 995.50 DOWNSTREAM ELEVATION(FEET) = 993.00 STREET LENGTH(FEET) = 360.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 62.80 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.77 HALFSTREET FLOOD WIDTH(FEET) = 33.58 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.53 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.73 STREET FLOW TRAVEL TIME(MIN.) = 1.70 Tc(MIN.) = 17.40 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.837 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 7.73 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 7.73 SUBAREA RUNOFF(CFS) = 19.06 EFFECTIVE AREA(ACRES) = 28.00 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 28.'0 PEAK FLOW RATE(CFS) = 69.04 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.79 HALFSTREET FLOOD WIDTH(FEET) = 34.50 FLOW VELOCITY(FEET /SEC.) = 3.63 DEPTH *VELOCITY(FT *FT /SEC.) = 2.87 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 360.0 FT WITH ELEVATION -DROP = 2.5 FT, IS 29.3 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 34.00 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 34.00 = 2000.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 34.00 TO NODE 35.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>> USING COMPUTER- ESTIMATED PIPESIZE (NON- PRESSURE FLOW)<< <<< ----------------------- ELEVATION DATA: UPSTREAM(FEET) = 993.00 DOWNSTREAM (FEET) = 983.40 FLOW LENGTH(FEET) = 680.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 36.0 INCH PIPE IS 26.5 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.36 ESTIMATED PIPE DIAMETER(INCH) = 36.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 69.04 PIPE TRAVEL TIME(MIN.) = 0.92 Tc(MIN.) = 18.32 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 35.00 = 2680.00 FEET. 11 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 35.00 TO NODE 35.00 IS CODE = 81 ---------------------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 18.32 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.751 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 20.92 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 20.92 SUBAREA RUNOFF(CFS) = 49.96 EFFECTIVE AREA(ACRES) = 48.92 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 48.9 PEAK FLOW RATE(CFS) = 116.83 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 35.00 TO NODE 36.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< ---------------- - - - - -- ELEVATION DATA: UPSTREAM(FEET) = 983.40 DOWNSTREAM(FEET) = 979.20 FLOW LENGTH(FEET) = 320.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 45.0 INCH PIPE IS 32.3 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 13.76 ESTIMATED PIPE DIAMETER(INCH) = 45.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 116.83 PIPE TRAVEL TIME(MIN.) = 0.39 Tc(MIN.) = 18.71 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 36.00 = 3000.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 36.00 TO NODE 36.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 18.71 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.717 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 9.84 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 9.84 SUBAREA RUNOFF(CFS) = 23.20 EFFECTIVE AREA(ACRES) = 58.76 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 58.8 PEAK FLOW RATE(CFS) = 138.51 FLOW PROCESS FROM NODE 36.00 TO NODE 37.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<<<<< ------------------------------ ELEVATION DATA: UPSTREAM(FEET) = 979.20 DOWNSTREAM(FEET) = 974.50 FLOW LENGTH(FEET) = 380.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 35.3 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 14.00 ESTIMATED PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 138.51 PIPE TRAVEL TIME(MIN.) = 0.45 Tc(MIN.) = 19.16 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 37.00 = 3380.00 FEET. 12 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 37.00 TO NODE 37.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 19.16 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.678 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.90 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.90 SUBAREA RUNOFF(CFS) = 25.32 EFFECTIVE AREA(ACRES) = 69.66 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 69.7 PEAK FLOW RATE(CFS) = 161.78 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 37.00 TO NODE 38.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) < <<< --------------- - - - -- ELEVATION DATA: UPSTREAM(FEET) = 974.50 DOWNSTREAM(FEET) = 966.50 FLOW LENGTH(FEET) = 590.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 39.0 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 14.79 ESTIMATED PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 161.78 PIPE TRAVEL TIME(MIN.) = 0.66 Tc(MIN.) = 19.82 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 38.00 = 3970.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 38.00 TO NODE 38.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 19.82 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.624 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 18.80 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 18.80 SUBAREA RUNOFF(CFS) = 42.74 EFFECTIVE AREA(ACRES) = 88.46 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 88.5 PEAK FLOW RATE(CFS) = 201.13 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 38.00 TO NODE 46.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< --------------- - - - -- ELEVATION DATA: UPSTREAM(FEET) = 966.50 DOWNSTREAM(FEET) = 957.30 FLOW LENGTH(FEET) = 680.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 54.0 INCH PIPE IS 40.1 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 15.87 ESTIMATED PIPE DIAMETER(INCH) = 54.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 201.13 PIPE TRAVEL TIME(MIN.) = 0.71 Tc(MIN.) = 20.54 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 46.00 = 4650.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** 13 FLOW PROCESS FROM NODE 46.00 TO NODE 46.00 IS CODE = 81 ---------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 20.54 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.569 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 21.54 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 21.54 SUBAREA RUNOFF(CFS) = 47.91 EFFECTIVE AREA(ACRES) = 110.00 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 110.0 PEAK FLOW RATE(CFS) = 244.64 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 46.00 TO NODE 46.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 20.54 RAINFALL INTENSITY(INCH /HR) = 2.57 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 110.00 TOTAL STREAM AREA(ACRES) = 110.00 PEAK FLOW RATE(CFS) AT CONFLUENCE = 244.64 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 40.00 TO NODE 41.00 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) = 1001.00 DOWNSTREAM(FEET) = 991.20 TC = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM TC(MIN.) = 12.151 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.519 SUBAREA TC AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS TC LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 7.13 0.98 0.100 32 12.15 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 21.96 TOTAL AREA(ACRES) = 7.13 PEAK FLOW RATE(CFS) = 21.96 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 41.00 TO NODE 42.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< »»> (STANDARD CURB SECTION USED) « «< -------------------------------------- UPSTREAM ELEVATION(FEET) = 991.20 DOWNSTREAM ELEVATION(FEET) = 990.50 STREET LENGTH(FEET) = 320.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 36.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 24.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 14 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) = 30.93 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.84 HALFSTREET FLOOD WIDTH(FEET) = 32.30 AVERAGE FLOW VELOCITY(FEET /SEC.) = 1.93 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.62 STREET FLOW TRAVEL TIME(MIN.) = 2.76 Tc(MIN.) = 14.91 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.113 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.61 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 6.61 SUBAREA RUNOFF(CFS) = 17.94 EFFECTIVE AREA(ACRES) = 13.74 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 13.7 PEAK FLOW RATE(CFS) = 37.29 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.88 HALFSTREET FLOOD WIDTH(FEET) = 36.61 FLOW VELOCITY(FEET /SEC.) = 1.97 DEPTH *VELOCITY(FT *FT /SEC.) = 1.73 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 320.0 FT WITH ELEVATION -DROP = 0.7 FT, IS 22.4 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 42.00 LONGEST FLOWPATH FROM NODE 40.00 TO NODE 42.00 = 1320.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 42.00 TO NODE 43.00 IS CODE = 56 ---------------------------------------------------------------------------- >>>>>COMPUTE TRAPEZOIDAL CHANNEL FLOW<< <<< >>>>>TRAVELTIME THRU SUBAREA <<<<< ---------------- - - - - -- ELEVATION DATA: UPSTREAM(FEET) = 990.50 DOWNSTREAM(FEET) - 983.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 660.00 CHANNEL SLOPE = 0.0114 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 6.55 ESTIMATED HEIGHT(FEET) = 3.28 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.833 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.00 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 49.61 TRAVEL TIME THRU SUBAREA BASED ON VELOCITY(FEET /SEC.) = 4.34 AVERAGE FLOW DEPTH(FEET) = 1.26 TRAVEL TIME(MIN.) = 2.54 Tc(MIN.) = 17.45 SUBAREA AREA(ACRES) = 10.00 SUBAREA RUNOFF(CFS) = 24.62 EFFECTIVE AREA(ACRES) = 23.74 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 23.7 PEAK FLOW RATE(CFS) = 58.44 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 6.73 ESTIMATED HEIGHT(FEET) = 3.36 END OF SUBAREA CHANNEL FLOW HYDRAULICS: DEPTH(FEET) = 1.36 FLOW VELOCITY(FEET /SEC.) = 4.54 LONGEST FLOWPATH FROM NODE 40.00 TO NODE 43.00 = 1980.00 FEET. 15 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 43.00 TO NODE 44.00 IS CODE = 56 ---------------------------------------------------------------------------- >>>>>COMPUTE TRAPEZOIDAL CHANNEL FLOW<< <<< >> >>>TRAVELTIME THRU SUBAREA <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 983.00 DOWNSTREAM(FEET) = 970.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 900.00 CHANNEL SLOPE = 0.0144 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 6.90 ESTIMATED HEIGHT(FEET) = 3.45 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.588 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 13.89 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 74.01 TRAVEL TIME THRU SUBAREA BASED ON VELOCITY(FEET /SEC.) = 5.28 AVERAGE FLOW DEPTH(FEET) = 1.44 TRAVEL TIME(MIN.) = 2.84 TC(MIN.) = 20.29 SUBAREA AREA(ACRES) = 13.89 SUBAREA RUNOFF(CFS) = 31.13 EFFECTIVE AREA(ACRES) = 37.63 AREA - AVERAGED FM(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 37.6 PEAK FLOW RATE(CFS) = 84.34 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 7.02 ESTIMATED HEIGHT(FEET) = 3.51 END OF SUBAREA CHANNEL FLOW HYDRAULICS: DEPTH(FEET) = 1.51 FLOW VELOCITY(FEET /SEC.) = 5.56 LONGEST FLOWPATH FROM NODE 40.00 TO NODE 44.00 = 2880.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 44.00 TO NODE 45.00 IS CODE = 56 ---------------------------------------------------------------------------- >>>>>COMPUTE TRAPEZOIDAL CHANNEL FLOW <<<<< >>>>>TRAVELTIME THRU SUBAREA<<<<< ELEVATION DATA: UPSTREAM(FEET) = 970.00 DOWNSTREAM(FEET) = 965.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 400.00 CHANNEL SLOPE = 0.0125 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 7.27 ESTIMATED HEIGHT(FEET) = 3.64 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.496 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 6.44 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 91.29 TRAVEL TIME THRU SUBAREA BASED ON VELOCITY(FEET /SEC.) = 5.29 AVERAGE FLOW DEPTH(FEET) = 1.64 TRAVEL TIME(MIN.) = 1.26 TC(MIN.) = 21.54 SUBAREA AREA(ACRES) = 6.44 SUBAREA RUNOFF(CFS) = 13.90 EFFECTIVE AREA(ACRES) = 44.07 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 44.1 PEAK FLOW RATE(CFS) = 95.13 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 7.33 ESTIMATED HEIGHT(FEET) = 3.67 END OF SUBAREA CHANNEL FLOW HYDRAULICS: DEPTH(FEET) = 1.67 FLOW VELOCITY(FEET /SEC.) = 5.35 LONGEST FLOWPATH FROM NODE 40.00 TO NODE 45.00 = 3280.00 FEET. ml ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 45.00 TO NODE 46.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>> COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>(STANDARD CURB SECTION USED)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 965.00 DOWNSTREAM ELEVATION(FEET) = 957.50 STREET LENGTH(FEET) = 12.70 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 36.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 24.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 105.87 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.51 HALFSTREET FLOOD WIDTH(FEET) = 9.71 AVERAGE FLOW VELOCITY(FEET /SEC.) = 25.99 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 13.17 STREET FLOW TRAVEL TIME(MIN.) = 0.01 Tc(MIN.) = 21.55 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.495 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 9.96 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 9.96 SUBAREA RUNOFF(CFS) = 21.49 EFFECTIVE AREA(ACRES) = 54.03 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 54.0 PEAK FLOW RATE(CFS) = 116.60 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.52 HALFSTREET FLOOD WIDTH(FEET) = 10.11 FLOW VELOCITY(FEET /SEC.) = 26.60 DEPTH *VELOCITY(FT *FT /SEC.) = 13.90 LONGEST FLOWPATH FROM NODE 40.00 TO NODE 46.00 = 3292.70 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 46.00 TO NODE 46.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES <<<<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 21.55 RAINFALL INTENSITY(INCH /HR) = 2.50 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 54.03 TOTAL STREAM AREA(ACRES) = 54.03 PEAK FLOW RATE(CFS) AT CONFLUENCE = 116.60 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 244.64 20.54 2.569 0.97( 0.10) 0.10 110.0 30.00 2 116.60 21.55 2.495 0.97( 0.10) 0.10 54.0 40.00 17 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 359.15 20.54 2.569 0.97( 0.10) 0.10 161.5 30.00 2 353.98 21.55 2.495 0.97( 0.10) 0.10 164.0 40.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 359.15 Tc(MIN.) = 20.54 EFFECTIVE AREA(ACRES) = 161.48 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 164.0 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 46.00 = 4650.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 46.00 TO NODE 47.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON- PRESSURE FLOW)<< <<< ---------------------------- ELEVATION DATA: UPSTREAM(FEET) = 957.50 DOWNSTREAM(FEET) = 947.30 FLOW LENGTH(FEET) = 680.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 66.0 INCH PIPE IS 48.8 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 19.08 ESTIMATED PIPE DIAMETER(INCH) = 66.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 359.15 PIPE TRAVEL TIME(MIN.) = 0.59 Tc(MIN.) = 21.13 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 47.00 = 5330.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 47.00 TO NODE 47.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE Tc(MIN.) = 21.13 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.525 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 20.21 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 20.21 SUBAREA RUNOFF(CFS) = 44.16 EFFECTIVE AREA(ACRES) = 181.69 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 184.2 PEAK FLOW RATE(CFS) = 396.97 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 47.00 TO NODE 50.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< ---------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 947.30 DOWNSTREAM(FEET) = 939.50 FLOW LENGTH(FEET) = 490.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 66.0 INCH PIPE IS 51.9 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 19.80 ESTIMATED PIPE DIAMETER(INCH) = 66.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 396.97 PIPE TRAVEL TIME(MIN.) = 0.41 Tc(MIN.) = 21.54 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 50.00 = 5820.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 50.00 TO NODE 50.00 IS CODE = 81 ---------------------------------------------------------------------- - - - - -- 18 >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 21.54 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.496 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 15.76 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 15.76 SUBAREA RUNOFF(CFS) = 34.02 EFFECTIVE AREA(ACRES) = 197.45 AREA - AVERAGED FM(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 200.0 PEAK FLOW RATE(CFS) = 426.23 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 50.00 TO NODE 50.00 IS CODE = 1 ---------------------------------------------------------------------------- >> >>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 21.54 RAINFALL INTENSITY(INCH /HR) = 2.50 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 197.45 TOTAL STREAM AREA(ACRES) = 200.00 PEAK FLOW RATE(CFS) AT CONFLUENCE = 426.23 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 48.00 TO NODE 49.00 IS CODE = 21 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS <<<<< >>USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< INITIAL SUBAREA FLOW- LENGTH(FEET) = 670.00 ELEVATION DATA: UPSTREAM(FEET) = 956.50 DOWNSTREAM(FEET) = 947.00 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE))* *0.20 SUBAREA ANALYSIS USED MINIMUM TC(MIN.) = 9.616 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 4.050 SUBAREA Tc AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 4.77 0.98 0.100 32 9.62 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 16.97 TOTAL AREA(ACRES) = 4.77 PEAK FLOW RATE(CFS) = 16.97 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 49.00 TO NODE 50.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>(STANDARD CURB SECTION USED)<< <<< ------------------------ UPSTREAM ELEVATION(FEET) = 947.00 DOWNSTREAM ELEVATION(FEET) = 939.50 STREET LENGTH(FEET) = 680.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 19 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) = 21.90 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.56 HALFSTREET FLOOD WIDTH(FEET) = 18.53 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.43 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.93 STREET FLOW TRAVEL TIME(MIN.) = 3.31 TC(MIN.) = 12.92 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.392 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 3.33 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 3.33 SUBAREA RUNOFF(CFS) = 9.87 EFFECTIVE AREA(ACRES) = 8.10 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 8.1 PEAK FLOW RATE(CFS) = 24.02 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.58 HALFSTREET FLOOD WIDTH(FEET) = 20.03 FLOW VELOCITY(FEET /SEC.) = 3.45 DEPTH *VELOCITY(FT *FT /SEC.) = 1.99 LONGEST FLOWPATH FROM NODE 48.00 TO NODE 50.00 = 1350.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 50.00 TO NODE 50.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<< <<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 12.92 RAINFALL INTENSITY(INCH /HR) = 3.39 AREA- AVERAGED FM(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 8.10 TOTAL STREAM AREA(ACRES) = 8.10 PEAK FLOW RATE(CFS) AT CONFLUENCE = 24.02 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 426.23 21.54 2.496 0.97( 0.10) 0.10 197.5 30.00 1 419.31 22.57 2.427 0.97( 0.10) 0.10 200.0 40.00 2 24.02 12.92 3.392 0.97( 0.10) 0.10 8.1 48.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE STREAM Q NUMBER (CFS) 1 375.16 2 443.71 3 436.29 CABLE * * Tc Intensity Fp(Fm) (MIN.) (INCH /HR) (INCH /HR) 12.92 3.392 0.97( 0.10) 21.54 2.496 0.97( 0.10) 22.57 2.427 0.97( 0.10) Ap Ae HEADWATER (ACRES) NODE 0.10 126.5 48.00 0.10 205.6 30.00 0.10 208.1 40.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 443.71 Tc(MIN.) = 21.54 EFFECTIVE AREA(ACRES) = 205.55 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 208.1 20 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 50.00 = 5820.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 50.00 TO NODE 56.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<<<<< ---------------- - - - - -- ELEVATION DATA: UPSTREAM(FEET) = 939.50 DOWNSTREAM(FEET) = 932.20 FLOW LENGTH(FEET) = 615.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 72.0 INCH PIPE IS 58.2 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 18.13 ESTIMATED PIPE DIAMETER(INCH) = 72.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 443.71 PIPE TRAVEL TIME(MIN.) = 0.57 TC(MIN.) = 22.11 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 56.00 = 6435.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 56.00 TO NODE 56.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 22.11 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.457 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 18.35 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 18.35 SUBAREA RUNOFF(CFS) = 38.97 EFFECTIVE AREA(ACRES) = 223.90 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 226.4 PEAK FLOW RATE(CFS) = 475.57 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 56.00 TO NODE 56.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 22.11 RAINFALL INTENSITY(INCH /HR) = 2.46 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 223.90 TOTAL STREAM AREA(ACRES) = 226.45 PEAK FLOW RATE(CFS) AT CONFLUENCE = 475.57 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 51.00 TO NODE 52.00 IS CODE = 21 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS <<<<< >>USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< INITIAL SUBAREA FLOW- LENGTH(FEET) = 670.00 ELEVATION DATA: UPSTREAM(FEET) = 956.00 DOWNSTREAM(FEET) = 946.00 TC = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM TC(MIN.) = 9.517 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 4.075 SUBAREA TC AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS TC LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 4.92 0.98 0.100 32 9.52 21 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) _ ,0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 17.61 TOTAL AREA(ACRES) = 4.92 PEAK FLOW RATE(CFS) = 17.61 FLOW PROCESS FROM NODE 52.00 TO NODE 53.00 IS CODE = 56 ---------------------------------------------------------------------------- >>>>>COMPUTE TRAPEZOIDAL CHANNEL FLOW<<<<< >>>>>TRAVELTIME THRU SUBAREA<< <<< ELEVATION DATA: UPSTREAM(FEET) = 946.00 DOWNSTREAM(FEET) = 941.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 380.00 CHANNEL SLOPE = 0.0132 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 5.66 ESTIMATED HEIGHT(FEET) = 2.83 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.684 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 2.57 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 21.76 TRAVEL TIME THRU SUBAREA BASED ON VELOCITY(FEET /SEC.) = 3.64 AVERAGE FLOW DEPTH(FEET) = 0.82 TRAVEL TIME(MIN.) = 1.74 Tc(MIN.) = 11.26 SUBAREA AREA(ACRES) = 2.57 SUBAREA RUNOFF(CFS) = 8.30 EFFECTIVE AREA(ACRES) = 7.49 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 7.5 PEAK FLOW RATE(CFS) = 24.18 *GIVEN HEIGHT /BASEWIDTH RATIO = 0.50 CHANNEL FREEBOARD(FEET) = 2.0 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.035 *ESTIMATED CHANNEL BASE(FEET) = 5.73 ESTIMATED HEIGHT(FEET) = 2.87 END OF SUBAREA CHANNEL FLOW HYDRAULICS: DEPTH(FEET) = 0.87 FLOW VELOCITY(FEET /SEC.) = 3.73 LONGEST FLOWPATH FROM NODE 51.00 TO NODE 53.00 = 1050.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 53.00 TO NODE 54.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>(STANDARD CURB SECTION USED)<< <<< UPSTREAM ELEVATION(FEET) = 942.00 DOWNSTREAM ELEVATION(FEET) = 940.00 STREET LENGTH(FEET) = 380.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 35.42 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.70 HALFSTREET FLOOD WIDTH(FEET) = 29.80 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.73 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.90 STREET FLOW TRAVEL TIME(MIN.) = 2.32 Tc(MIN.) = 13.58 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.292 22 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 7.81 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 7.81 SUBAREA RUNOFF(CFS) = 22.46 EFFECTIVE AREA(ACRES) = 15.30 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 15.3 PEAK FLOW RATE(CFS) = 43.99 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.73 HALFSTREET FLOOD WIDTH(FEET) = 31.57 FLOW VELOCITY(FEET /SEC.) = 2.90 DEPTH *VELOCITY(FT *FT /SEC.) = 2.12 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 380.0 FT WITH ELEVATION -DROP = 2.0 FT, IS 28.3 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 54.00 LONGEST FLOWPATH FROM NODE 51.00 TO NODE 54.00 = 1430.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 54.00 TO NODE 55.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< ELEVATION DATA: UPSTREAM(FEET) = 939.50 DOWNSTREAM(FEET) = 935.00 FLOW LENGTH(FEET) = 260.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 30.0 INCH PIPE IS 21.0 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.00 ESTIMATED PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 43.99 PIPE TRAVEL TIME(MIN.) = 0.36 Tc(MIN.) = 13.94 LONGEST FLOWPATH FROM NODE 51.00 TO NODE 55.00 = 1690.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 55.00 TO NODE 55.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 13.94 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.241 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 4.83 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 4.83 SUBAREA RUNOFF(CFS) = 13.66 EFFECTIVE AREA(ACRES) = 20.13 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 20.1 PEAK FLOW RATE(CFS) = 56.95 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 55.00 TO NODE 56.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED) <<<<< -------------------------------- UPSTREAM ELEVATION(FEET) = 935.00 DOWNSTREAM ELEVATION(FEET) = 932.20 STREET LENGTH(FEET) = 600.00 CURB HEIGHT(INCHES) = 6.0 STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 23 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) = 61.44 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.81 HALFSTREET FLOOD WIDTH(FEET) = 35.29 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.05 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.46 STREET FLOW TRAVEL TIME(MIN.) = 3.28 Tc(MIN.) = 17.22 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.855 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 3.62 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 3.62 SUBAREA RUNOFF(CFS) = 8.99 EFFECTIVE AREA(ACRES) = 23.75 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 23.8 PEAK FLOW RATE(CFS) = 58.95 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.80 HALFSTREET FLOOD WIDTH(FEET) = 34.86 FLOW VELOCITY(FEET /SEC.) = 3.02 DEPTH *VELOCITY(FT *FT /SEC.) = 2.41 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 600.0 FT WITH ELEVATION -DROP = 2.8 FT, IS 11.5 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 56.00 LONGEST FLOWPATH FROM NODE 51.00 TO NODE 56.00 = 2290.00 FEET. FLOW PROCESS FROM NODE 56.00 TO NODE 56.00 IS CODE = 1 ---------------------------------------------------------------------------- >> >>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<< <<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 17.22 RAINFALL INTENSITY(INCH /HR) = 2.86 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 23.75 TOTAL STREAM AREA(ACRES) = 23.75 PEAK FLOW RATE(CFS) AT CONFLUENCE = 58.95 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 418.00 13.51 3.303 0.97( 0.10) 0.10 144.9 48.00 1 475.57 22.11 2.457 0.97( 0.10) 0.10 223.9 30.00 1 467.47 23.14 2.391 0.97( 0.10) 0.10 226.4 40.00 2 58.95 17.22 2.855 0.97( 0.10) 0.10 23.8 51.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE STREAM Q NUMBER (CFS) 1 471.75 2 501.78 3 526.01 4 516.50 CABLE * * Tc Intensity Fp(Fm) (MIN.) (INCH /HR) (INCH /HR) 13.51 3.303 0.97( 0.10) 17.22 2.855 0.97( 0.10) 22.11 2.457 0.97( 0.10) 23.14 2.391 0.97( 0.10) Ap Ae HEADWATER (ACRES) NODE 0.10 163.5 48.00 0.10 202.7 51.00 0.10 247.7 30.00 0.10 250.2 40.00 24 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 526.01 TC(MIN.) = 22.11 EFFECTIVE AREA(ACRES) = 247.65 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 250.2 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 56.00 = 6435.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 56.00 TO NODE 57.00 IS CODE = 31 ---------------------------------------------------------------------------- »» >COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 932.20 DOWNSTREAM(FEET) = 930.00 FLOW LENGTH(FEET) = 150.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 75.0 INCH PIPE IS 58.0 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 20.66 ESTIMATED PIPE DIAMETER(INCH) = 75.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 526.01 PIPE TRAVEL TIME(MIN.) = 0.12 TC(MIN.) = 22.23 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 57.00 = 6585.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 57.00 TO NODE 57.00 IS CODE = 81 ---------------------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE TC(MIN.) = 22.23 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.449 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 4.77 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 4.77 SUBAREA RUNOFF(CFS) = 10.10 EFFECTIVE AREA(ACRES) = 252.42 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 255.0 PEAK FLOW RATE(CFS) = 534.32 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 57.00 TO NODE 73.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< -------------------------- ELEVATION DATA: UPSTREAM(FEET) = 930.00 DOWNSTREAM(FEET) = 920.00 FLOW LENGTH(FEET) = 760.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 78.0 INCH PIPE IS 58.5 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 20.02 ESTIMATED PIPE DIAMETER(INCH) = 78.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 534.32 PIPE TRAVEL TIME(MIN.) = 0.63 TC(MIN.) = 22.86 LONGEST FLOWPATH FROM NODE 30.00 TO NODE 73.00 = 7345.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 22.86 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.409 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL B 3.82 0.75 0.100 56 25 COMMERCIAL A 19.41 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.94 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 23.23 SUBAREA RUNOFF(CFS) = 48.39 EFFECTIVE AREA(ACRES) = 275.65 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 278.2 PEAK FLOW RATE(CFS) = 573.42 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 11 ---------------------------------------------------------------------------- >>>>> CONFLUENCE MEMORY BANK # 1 WITH THE MAIN- STREAM MEMORY <<<<< ** MAIN STREAM CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) 1 533.90 14.28 3.195 0.97( 0.10) 2 557.42 17.98 2.782 0.97( 0.10) 3 573.42 22.86 2.409 0.97( 0.10) 4 562.78 23.91 2.345 0.97( 0.10) LONGEST FLOWPATH FROM NODE 30.00 TO NODE ** MEMORY BANK # 1 CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) 1 375.65 26.21 2.219 0.91( 0.13) LONGEST FLOWPATH FROM NODE 10.00 TO NODE ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(FM) NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) 1 834.24 14.28 3.195 0.94( 0.11) 2 884.68 17.98 2.782 0.94( 0.11) 3 930.88 22.86 2.409 0.94( 0.11) 4 926.11 23.91 2.345 0.94( 0.11) 5 906.95 26.21 2.219 0.94( 0.11) TOTAL AREA(ACRES) = 471.2 Ap Ae HEADWATER (ACRES) NODE 0.10 191.5 48.00 0.10 230.7 51.00 0.10 275.7 30.00 0.10 278.2 40.00 73.00 = 7345.00 FEET. Ap Ae HEADWATER (ACRES) NODE 0.15 193.0 10.00 73.00 = 8776.00 FEET. Ap Ae HEADWATER (ACRES) NODE 0.12 296.7 48.00 0.12 363.2 51.00 0.12 444.0 30.00 0.12 454.3 40.00 0.12 471.2 10.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 930.88 Tc(MIN.) = 22.862 EFFECTIVE AREA(ACRES) = 444.03 AREA- AVERAGED Fm(INCH /HR) = 0.11 AREA- AVERAGED Fp(INCH /HR) = 0.94 AREA- AVERAGED Ap = 0.12 TOTAL AREA(ACRES) = 471.2 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 73.00 = 8776.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 12 ---------------------------------------------------------------------------- >> >>>CLEAR MEMORY BANK # 1 <<<<< ********************************************* * * * * * * * * * ** * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 1 ---------------------------------------------------------------------------- >> >>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 22.86 RAINFALL INTENSITY(INCH /HR) = 2.41 AREA- AVERAGED Fm(INCH /HR) = 0.11 AREA- AVERAGED Fp(INCH /HR) = 0.94 AREA- AVERAGED Ap = 0.12 EFFECTIVE STREAM AREA(ACRES) = 444.03 TOTAL STREAM AREA(ACRES) = 471.20 PEAK FLOW RATE(CFS) AT CONFLUENCE = 930.88 26 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 60.00 TO NODE 61.00 IS CODE = 21 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS <<<<< >>USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- INITIAL SUBAREA FLOW- LENGTH(FEET) = 930.00 ELEVATION DATA: UPSTREAM(FEET) = 1011.00 DOWNSTREAM(FEET) = 992.00 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 10.191 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.911 SUBAREA Tc AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 2.89 0.98 0.100 32 10.19 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA RUNOFF(CFS) = 9.92 TOTAL AREA(ACRES) = 2.89 PEAK FLOW RATE(CFS) = 9.92 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 61.00 TO NODE 62.00 IS CODE = 61 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 992.00 DOWNSTREAM ELEVATION(FEET) = 991.60 STREET LENGTH(FEET) = 170.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 36.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 24.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 15.55 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.68 HALFSTREET FLOOD WIDTH(FEET) = 16.36 AVERAGE FLOW VELOCITY(FEET /SEC.) = 1.89 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.28 STREET FLOW TRAVEL TIME(MIN.) = 1.50 Tc(MIN.) = 11.69 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.602 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 3.57 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 3.57 SUBAREA RUNOFF(CFS) = 11.26 EFFECTIVE AREA(ACRES) = 6.46 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 6.5 PEAK FLOW RATE(CFS) = 20.37 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.74 HALFSTREET FLOOD WIDTH(FEET) = 22.36 FLOW VELOCITY(FEET /SEC.) = 1.93 DEPTH *VELOCITY(FT *FT /SEC.) = 1.42 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 62.00 = 1100.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 62.00 TO NODE 63.00 IS CODE = 61 27 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>> (STANDARD CURB SECTION USED) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 991.60 DOWNSTREAM ELEVATION(FEET) = 991.30 STREET LENGTH(FEET) = 165.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 36.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 24.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 25.35 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.81 HALFSTREET FLOOD WIDTH(FEET) = 29.86 AVERAGE FLOW VELOCITY(FEET /SEC.) = 1.75 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 1.42 STREET FLOW TRAVEL TIME(MIN.) = 1.57 Tc(MIN.) = 13.26 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.339 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 3.41 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 3.41 SUBAREA RUNOFF(CFS) = 9.95 EFFECTIVE AREA(ACRES) = 9.87 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 9.9 PEAK FLOW RATE(CFS) = 28.80 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.84 HALFSTREET FLOOD WIDTH(FEET) = 32.67 FLOW VELOCITY(FEET /SEC.) = 1.77 DEPTH *VELOCITY(FT *FT /SEC.) = 1.49 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 165.0 FT WITH ELEVATION -DROP = 0.3 FT, IS 13.3 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 63.00 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 63.00 = 1265.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 63.00 TO NODE 64.00 IS CODE = 61 ---------------------------------------------------------------------------- >> >>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>(STANDARD CURB SECTION USED)<< <<< UPSTREAM ELEVATION(FEET) = 991.30 DOWNSTREAM ELEVATION(FEET) = 989.80 STREET LENGTH(FEET) = 210.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 36.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 24.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.040 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) = 34.98 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.73 HALFSTREET FLOOD WIDTH(FEET) = 21.98 N -] AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.37 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 2.47 STREET FLOW TRAVEL TIME(MIN.) = 1.04 TC(MIN.) = 14.30 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.192 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 4.44 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 4.44 SUBAREA RUNOFF(CFS) = 12.36 EFFECTIVE AREA(ACRES) = 14.31 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 14.3 PEAK FLOW RATE(CFS) = 39.85 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.76 HALFSTREET FLOOD WIDTH(FEET) = 24.80 FLOW VELOCITY(FEET /SEC.) = 3.40 DEPTH *VELOCITY(FT *FT /SEC.) = 2.59 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 64.00 = 1475.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 64.00 TO NODE 65.00 IS CODE = 31 ---------------------------------------------------------------------------- >> >>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<<<<< ELEVATION DATA: UPSTREAM(FEET) = 989.80 DOWNSTREAM(FEET) = 981.00 FLOW LENGTH(FEET) = 660.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 30.0 INCH PIPE IS 21.5 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 10.58 ESTIMATED PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 39.85 PIPE TRAVEL TIME(MIN.) = 1.04 TC(MIN.) = 15.34 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 65.00 = 2135.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 65.00 TO NODE 65.00 IS CODE = 81 ---------------------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< MAINLINE TC(MIN.) = 15.34 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.060 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.46 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.46 SUBAREA RUNOFF(CFS) = 27.89 EFFECTIVE AREA(ACRES) = 24.77 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 24.8 PEAK FLOW RATE(CFS) = 66.04 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 65.00 TO NODE 66.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 981.00 DOWNSTREAM(FEET) = 969.00 FLOW LENGTH(FEET) = 640.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 33.0 INCH PIPE IS 25.3 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 13.51 ESTIMATED PIPE DIAMETER(INCH) = 33.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 66.04 PIPE TRAVEL TIME(MIN.) = 0.79 TC(MIN.) = 16.13 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 66.00 = 2775.00 FEET. W ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 66.00 TO NODE 66.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 16.13 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.969 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL B 0.92 0.75 0.100 56 COMMERCIAL A 9.22 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.95 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.14 SUBAREA RUNOFF(CFS) = 26.23 EFFECTIVE AREA(ACRES) = 34.91 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 34.9 PEAK FLOW RATE(CFS) = 90.25 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 66.00 TO NODE 67.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON- PRESSURE FLOW)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 969.00 DOWNSTREAM(FEET) = 962.50 FLOW LENGTH(FEET) = 680.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 42.0 INCH PIPE IS 32.4 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 11.33 ESTIMATED PIPE DIAMETER(INCH) = 42.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 90.25 PIPE TRAVEL TIME(MIN.) = 1.00 Tc(MIN.) = 17.13 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 67.00 = 3455.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 67.00 TO NODE 67.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 17.13 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.864 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL B 3.43 0.75 0.100 56 COMMERCIAL A 7.34 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.90 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.77 SUBAREA RUNOFF(CFS) = 26.89 EFFECTIVE AREA(ACRES) = 45.68 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.95 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 45.7 PEAK FLOW RATE(CFS) = 113.82 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 67.00 TO NODE 68.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< ELEVATION DATA: UPSTREAM(FEET) = 962.50 DOWNSTREAM(FEET) = 955.80 FLOW LENGTH(FEET) = 640.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 45.0 INCH PIPE IS 34.8 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.42 ESTIMATED PIPE DIAMETER(INCH) = 45.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 113.82 PIPE TRAVEL TIME(MIN.) = 0.86 Tc(MIN.) = 17.99 30 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 68.00 = 4095.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 68.00 TO NODE 68.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE Tc(MIN.) = 17.99 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.781 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL B 0.24 0.75 0.100 56 COMMERCIAL A 10.05 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.29 SUBAREA RUNOFF(CFS) = 24.86 EFFECTIVE AREA(ACRES) = 55.97 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.96 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 56.0 PEAK FLOW RATE(CFS) = 135.28 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 68.00 TO NODE 69.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< ELEVATION DATA: UPSTREAM(FEET) = 955.80 DOWNSTREAM(FEET) = 942.50 FLOW LENGTH(FEET) = 1350.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 38.2 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.60 ESTIMATED PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 135.28 PIPE TRAVEL TIME(MIN.) = 1.79 Tc(MIN.) = 19.77 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 69.00 = 5445.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 69.00 TO NODE 69.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE Tc(MIN.) = 19.77 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.628 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.54 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.54 SUBAREA RUNOFF(CFS) = 24.00 EFFECTIVE AREA(ACRES) = 66.51 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.96 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 66.5 PEAK FLOW RATE(CFS) = 151.54 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 69.00 TO NODE 70.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) <<<<< ------- - - - - -- ELEVATION DATA: UPSTREAM(FEET) = 942.50 DOWNSTREAM(FEET) = 929.50 FLOW LENGTH(FEET) = 930.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 36.1 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 14.94 ESTIMATED PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 151.54 PIPE TRAVEL TIME(MIN.) = 1.04 Tc(MIN.) = 20.81 31 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 70.00 = 6375.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 70.00 TO NODE 70.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 20.81 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.548 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 14.30 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 14.30 SUBAREA RUNOFF(CFS) = 31.54 EFFECTIVE AREA(ACRES) = 80.81 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.96 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 80.8 PEAK FLOW RATE(CFS) = 178.33 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 70.00 TO NODE 71.00 IS CODE = 31 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA <<<<< >> >>>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW)<< <<< --------------- - -- ELEVATION DATA: UPSTREAM(FEET) = 929.50 DOWNSTREAM(FEET) = 923.10 FLOW LENGTH(FEET) = 765.00 MANNING'S N = 0.013 DEPTH OF FLOW IN 57.0 INCH PIPE IS 41.5 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.90 ESTIMATED PIPE DIAMETER(INCH) = 57.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 178.33 PIPE TRAVEL TIME(MIN.) = 0.99 TC(MIN.) = 21.80 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 71.00 = 7140.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 71.00 TO NODE 71.00 IS CODE = 81 ---------------------------------------------------------------------------- >> >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE TC(MIN.) = 21.80 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.478 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 10.23 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 10.23 SUBAREA RUNOFF(CFS) = 21.92 EFFECTIVE AREA(ACRES) = 91.04 AREA - AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.96 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 91.0 PEAK FLOW RATE(CFS) = 195.16 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 71.00 TO NODE 72.00 IS CODE = 41 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>USING USER - SPECIFIED PIPESIZE (EXISTING ELEMENT)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 923.10 DOWNSTREAM(FEET) = 922.00 FLOW LENGTH(FEET) = 670.00 MANNING'S N = 0.013 ASSUME FULL- FLOWING PIPELINE PIPE -FLOW VELOCITY(FEET /SEC.) = 9.94 PIPE FLOW VELOCITY = (TOTAL FLOW) /(PIPE CROSS SECTION AREA) GIVEN PIPE DIAMETER(INCH) = 60.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 195.16 PIPE TRAVEL TIME(MIN.) = 1.12 TC(MIN.) = 22.92 ON LONGEST FLOWPATH FROM NODE 60.00 TO NODE 72.00 = 7810.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 72.00 TO NODE 73.00 IS CODE = 41 >> >>> COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>USING USER - SPECIFIED PIPESIZE (EXISTING ELEMENT) <<<<< ------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 922.00 DOWNSTREAM(FEET) = 920.00 FLOW LENGTH(FEET) = 670.00 MANNING'S N = 0.013 ASSUME FULL - FLOWING PIPELINE PIPE -FLOW VELOCITY(FEET /SEC.) = 9.94 PIPE FLOW VELOCITY = (TOTAL FLOW) /(PIPE CROSS SECTION AREA) GIVEN PIPE DIAMETER(INCH) = 60.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 195.16 PIPE TRAVEL TIME(MIN.) = 1.12 Tc(MIN.) = 24.05 LONGEST FLOWPATH FROM NODE 60.00 TO NODE 73.00 = 8480.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< MAINLINE Tc(MIN.) = 24.05 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.337 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 16.74 0.98 0.100 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 SUBAREA AREA(ACRES) = 16.74 SUBAREA RUNOFF(CFS) = 33.73 EFFECTIVE AREA(ACRES) = 107.78 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 107.8 PEAK FLOW RATE(CFS) = 217.29 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 73.00 TO NODE 73.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 24.05 RAINFALL INTENSITY(INCH /HR) = 2.34 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA - AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = 107.78 TOTAL STREAM AREA(ACRES) = 107.78 PEAK FLOW RATE(CFS) AT CONFLUENCE = 217.29 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 834.24 14.28 3.195 0.94( 0.11) 0.12 296.7 48.00 1 884.68 17.98 2.782 0.94( 0.11) 0.12 363.2 51.00 1 930.88 22.86 2.409 0.94( 0.11) 0.12 444.0 30.00 1 926.11 23.91 2.345 0.94( 0.11) 0.12 454.3 40.00 1 906.95 26.21 2.219 0.94( 0.11) 0.12 471.2 10.00 2 217.29 24.05 2.337 0.97( 0.10) 0.10 107.8 60.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** 33 STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) TOTAL AREA(ACRES) = 579.0 (ACRES) NODE 1 1012.68 14.28 3.195 0.95( 0.11) 0.11 360.7 48.00 2 1079.46 17.98 2.782 0.95( 0.11) 0.11 443.8 51.00 3 1144.09 22.86 2.409 0.95( 0.11) 0.11 546.5 30.00 4 1142.91 23.91 2.345 0.95( 0.11) 0.11 561.4 40.00 5 1142.21 24.05 2.337 0.95( 0.11) 0.11 563.1 60.00 6 1112.85 26.21 2.219 0.94( 0.11) 0.12 579.0 10.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 1144.09 Tc(MIN.) = 22.86 EFFECTIVE AREA(ACRES) = 546.50 AREA- AVERAGED Fm(INCH /HR) = 0.11 AREA - AVERAGED Fp(INCH /HR) = 0.95 AREA- AVERAGED Ap = 0.11 TOTAL AREA(ACRES) = 579.0 LONGEST FLOWPATH FROM NODE 10.00 TO NODE 73.00 = 8776.00 FEET. END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 579.0 TC(MIN.) = 22.86 EFFECTIVE AREA(ACRES) = 546.50 AREA- AVERAGED Fm(INCH /HR)= 0.11 AREA- AVERAGED Fp(INCH /HR) = 0.95 AREA- AVERAGED Ap = 0.114 PEAK FLOW RATE(CFS) = 1144.09 ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 1012.68 14.28 3.195 0.95( 0.11) 0.11 360.7 48.00 2 1079.46 17.98 2.782 0.95( 0.11) 0.11 443.8 51.00 3 1144.09 22.86 2.409 0.95( 0.11) 0.11 546.5 30.00 4 1142.91 23.91 2.345 0.95( 0.11) 0.11 561.4 40.00 5 1142.21 24.05 2.337 0.95( 0.11) 0.11 563.1 60.00 6 1112.85 26.21 2.219 0.94( 0.11) 0.12 579.0 10.00 END OF RATIONAL METHOD ANALYSIS 38 34