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HomeMy WebLinkAboutWalnut Ave CIP0 0 ALLARD ENGINEERING iN civil i3nginei3ring land survBylng land planning TB MSM=AL DATE: 4-26-04 PROJECT: Walnut Ave. CIP TO: Russell Gulke JOB NO: 1490801 City of Fontana FROM: Bob Fiscus ❑ Overnight ❑ Mail ® Delivery ❑ Pickup We are transmitting: ❑ Per your Request ® For Your Review ❑ For Your Approval ® For Your Use ❑ Preliminary Drawings ❑ Final Drawings ❑ 1" Plan Check ❑ 2nd Plan Check ❑ Other Description: 2 sets of revised Hydraulic calculations and maps for the above referenced project. Remarks: 8253 Sierra Avenue, Fontana, California 92335 (909) 35G-1815 * FAX (909) 356-1795 Document2 **************************************************************************** RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE (Reference: 1986 SAN BERNARDINO CO. HYDROLOGY CRITERION) (c) Copyright 1983-95 Advanced Engineering Software (aes) Ver. 5.1A Release Date: 08/01/95 License ID 1400 Analysis prepared by: ALLARD ENGINEERING, INC. 6101 CHERRY AVENUE FONTANA, CALIFORNIA 92336 (909) 899 - 5011 ************************** DESCRIPTION OF STUDY ************************** * Walnut Street Hydrology (Citrus to Cypress) * 100 Year Storm Event * by J.M. * * * ************************************************************************** FILE NAME: WALNUTSD.DAT TIME/DATE OF STUDY: 14:51 4/23/2004 USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: --*TIME-OF-CONCENTRATION MODEL* -- USER SPECIFIED STORM EVENT(YEAR) = 100.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 3.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE _ .95 *USER -DEFINED LOGARITHMIC INTERPOLATION USED FOR RAINFALL* SLOPE OF INTENSITY DURATION CURVE(LOG(I;IN/HR) vs. LOG(Tc;MIN)) _ .6000 USER SPECIFIED 1 -HOUR INTENSITY(INCH/HOUR) = 1.5500 *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 .018/ .018/ .020 .67 2.00 .03125 .1670 01500 2 22.0 11.0 .020/ .020/ --- .67 2.00 .03125 .1670 .01500 GLOBAL STREET FLOW -DEPTH CONSTRAINTS: 1. Relative Flow -Depth = .24 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.* **************************************************************************** FLOW PROCESS FROM NODE 10.00 TO NODE 12.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<< <<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- INITIAL SUBAREA FLOW-LENGTH(FEET) = 690.00 ELEVATION DATA: UPSTREAM(FEET) = 1517.50 DOWNSTREAM(FEET) = 1508.00 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 9.787 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.601 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 6.50 .98 .10 32 9.79 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA RUNOFF(CFS) = 26.34 TOTAL AREA(ACRES) = 6.50 PEAK FLOW RATE(CFS) = 26.34 **************************************************************************** FLOW PROCESS FROM NODE 11.00 TO NODE 12.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- MAINLINE Tc(MIN) = 9.79 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.601 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A .60 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) _ .60 SUBAREA RUNOFF(CFS) = 2.43 EFFECTIVE AREA(ACRES) = 7.10 AREA -AVERAGED Fm(INCH/HR) _ .10 AREA -AVERAGED Fp(INCH/HR) _ .97 AREA -AVERAGED Ap = .10 TOTAL AREA(ACRES) = 7.10 PEAK FLOW RATE(CFS) = 28.78 **************************************************************************** FLOW PROCESS FROM NODE 12.00 TO NODE 16.00 IS CODE = 3.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 1508.00 DOWNSTREAM(FEET) = 1462.40 FLOW LENGTH(FEET) = 1700.00 MANNING'S N = .013 DEPTH OF FLOW IN 24.0 INCH PIPE IS 16.2 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 12.76 ESTIMATED PIPE DIAMETER(INCH) = 24.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 28.78 PIPE TRAVEL TIME(MIN.) = 2.22 Tc(MIN.) = 12.01 **************************************************************************** FLOW PROCESS FROM NODE 16.00 TO NODE 16.00 IS CODE = 1 >> >>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 12.01 RAINFALL INTENSITY(INCH/HR) = 4.07 AREA -AVERAGED Fm(INCH/HR) = .10 AREA -AVERAGED Fp(INCH/HR) = .97 AREA -AVERAGED Ap = .10 EFFECTIVE STREAM AREA(ACRES) = 7.10 TOTAL STREAM AREA(ACRES) = 7.10 PEAK FLOW RATE(CFS) AT CONFLUENCE = 28.78 **************************************************************************** FLOW PROCESS FROM NODE 20.00 TO NODE 13.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< ------------ INITIAL SUBAREA FLOW-LENGTH(FEET) = 400.00 ELEVATION DATA: UPSTREAM(FEET) = 1509.00 DOWNSTREAM(FEET) = 1497.00 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 9.126 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.798 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.) RESIDENTIAL "3-4 DWELLINGS/ACRE" A 6.00 .98 .60 32 9.13 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA RUNOFF(CFS) = 22.75 TOTAL AREA(ACRES) = 6.00 PEAK FLOW RATE(CFS) = 22.75 **************************************************************************** FLOW PROCESS FROM NODE 12.00 TO NODE 13.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< ------------------------------- MAINLINE Tc(MIN) = 9.13 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.798 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A .60 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = .60 SUBAREA RUNOFF(CFS) = 2.54 EFFECTIVE AREA(ACRES) = 6.60 AREA -AVERAGED Fm(INCH/HR) _ .54 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .55 TOTAL AREA(ACRES) = 6.60 PEAK FLOW RATE(CFS) = 25.29 **************************************************************************** FLOW PROCESS FROM NODE 13.00 TO NODE 14.00 IS CODE = 6.2 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>(STREET TABLE SECTION # 2 USED)<< <<< UPSTREAM ELEVATION(FEET) = 1497.00 DOWNSTREAM ELEVATION(FEET) = 1483.00 STREET LENGTH(FEET) = 650.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 22.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 11.00 INSIDE STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 26.94 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) _ .49 HALFSTREET FLOOD WIDTH(FEET) = 16.73 AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.51 PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 2.22 STREET FLOW TRAVEL TIME(MIN.) = 2.40 Tc(MIN.) = 11.53 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.170 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A .90 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) _ .90 SUBAREA RUNOFF(CFS) = 3.30 EFFECTIVE AREA(ACRES) = 7.50 AREA -AVERAGED Fm(INCH/HR) _ .49 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .50 TOTAL AREA(ACRES) = 7.50 PEAK FLOW RATE(CFS) = 25.29 NOTE: PEAK FLOW RATE DEFAULTED TO UPSTREAM VALUE END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) _ .48 HALFSTREET FLOOD WIDTH(FEET) = 16.26 FLOW VELOCITY(FEET/SEC.) = 4.46 DEPTH*VELOCITY(FT*FT/SEC.) = 2.16 **************************************************************************** FLOW PROCESS FROM NODE 30.00 TO NODE 14.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ------------------------- ------------------------- MAINLINE TC(MIN) = 11.53 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.170 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN SCHOOL A 18.60 .98 .60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA AREA(ACRES) = 18.60 SUBAREA RUNOFF(CFS) = 60.01 EFFECTIVE AREA(ACRES) = 26.10 AREA -AVERAGED Fm(INCH/HR) _ .56 AREA -AVERAGED Fp(INCH/HR) _ .97 AREA -AVERAGED Ap = .57 TOTAL AREA(ACRES) = 26.10 PEAK FLOW RATE(CFS) = 84.87 **************************************************************************** FLOW PROCESS FROM NODE 14.00 TO NODE 16.00 IS CODE = 6.2 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< »»> (STREET TABLE SECTION ## 2 USED) ««< UPSTREAM ELEVATION(FEET) = 1483.00 DOWNSTREAM ELEVATION(FEET) = 1462.40 STREET LENGTH(FEET) = 650.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 22.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 11.00 INSIDE STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 86.40 ***STREET FLOWING FULL*** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = .64 HALFSTREET FLOOD WIDTH(FEET) = 22.00 AVERAGE FLOW VELOCITY(FEET/SEC.) = 7.25 PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 4.64 STREET FLOW TRAVEL TIME(MIN.) = 1.49 Tc(MIN.) = 13.02 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.876 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A .90 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = .90 SUBAREA RUNOFF(CFS) = 3.06 EFFECTIVE AREA(ACRES) = 27.00 AREA -AVERAGED Fm(INCH/HR) _ .54 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .56 TOTAL AREA(ACRES) = 27.00 PEAK FLOW RATE(CFS) = 84.87 NOTE: PEAK FLOW RATE DEFAULTED TO UPSTREAM VALUE END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = .64 HALFSTREET FLOOD WIDTH(FEET) = 22.00 FLOW VELOCITY(FEET/SEC.) = 7.19 DEPTH*VELOCITY(FT*FT/SEC.) = 4.59 **************************************************************************** FLOW PROCESS FROM NODE 40.00 TO NODE 16.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< ------------------------- ------------------------- MAINLINE Tc(MIN) = 13.02 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.876 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN RESIDENTIAL "3-4 DWELLINGS/ACRE" A 17.90 .98 .60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA AREA(ACRES) = 17.90 SUBAREA RUNOFF(CFS) = 53.02 EFFECTIVE AREA(ACRES) = 44.90 AREA -AVERAGED Fm(INCH/HR) _ .56 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .57 TOTAL AREA(ACRES) = 44.90 PEAK FLOW RATE(CFS) = 134.05 **************************************************************************** FLOW PROCESS FROM NODE 16.00 TO NODE 16.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 13.02 RAINFALL INTENSITY(INCH/HR) = 3.88 AREA -AVERAGED Fm(INCH/HR) = .56 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .57 EFFECTIVE STREAM AREA(ACRES) = 44.90 TOTAL STREAM AREA(ACRES) = 44.90 PEAK FLOW RATE(CFS) AT CONFLUENCE = 134.05 **************************************************************************** FLOW PROCESS FROM NODE 15.00 TO NODE 16.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<< <<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< INITIAL SUBAREA FLOW-LENGTH(FEET) = 950.00 ELEVATION DATA: UPSTREAM(FEET) = 1466.00 DOWNSTREAM(FEET) = 1462.40 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 14.396 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.650 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 1.30 .98 .10 32 14.40 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA RUNOFF(CFS) = 4.16 TOTAL AREA(ACRES) = 1.30 PEAK FLOW RATE(CFS) = 4.16 **************************************************************************** FLOW PROCESS FROM NODE 16.00 TO NODE 16.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<< <<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE: TIME OF CONCENTRATION(MIN.) = 14.40 RAINFALL INTENSITY(INCH/HR) = 3.65 AREA -AVERAGED Fm(INCH/HR) = .10 AREA -AVERAGED Fp(INCH/HR) _ .98 Q Tc AREA -AVERAGED Ap = .10 Fp(Fm) Ap EFFECTIVE STREAM AREA(ACRES) = 1.30 SOURCE NUMBER TOTAL STREAM AREA(ACRES) = 1.30 (MIN.) (INCH/HR) PEAK FLOW RATE(CFS) AT CONFLUENCE = 4.16 ** CONFLUENCE DATA ** NODE 1 STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 28.78 12.01 4.070 .97( .10) .10 7.10 10.00 2 134.05 13.02 3.876 .98( .56) .57 44.90 20.00 3 4.16 14.40 3.650 .98( .10) .10 1.30 15.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO 14.40 CONFLUENCE FORMULA USED FOR 3 STREAMS. .975( .486) .50 ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 163.5 12.01 4.070 .975( .483) .50 49.6 10.00 2 165.4 13.02 3.876 .975( .487) .50 53.2 20.00 3 154.8 14.40 3.650 .975( .486) .50 53.3 15.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 165.42 TC(MIN.) = 13.02 EFFECTIVE AREA(ACRES) = 53.18 AREA -AVERAGED Fm(INCH/HR) _ .49 AREA -AVERAGED Fp(INCH/HR) = .97 AREA -AVERAGED Ap = .50 TOTAL AREA(ACRES) = 53.30 **************************************************************************** FLOW PROCESS FROM NODE 16.00 TO NODE 42.00 IS CODE = 3.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< » >>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<<<<< ELEVATION DATA: DATA: UPSTREAM(FEET) = 1462.40 DOWNSTREAM(FEET) = 1459.00 FLOW LENGTH(FEET) = 1300.00 MANNING'S N = .013 DEPTH OF FLOW IN 66.0 INCH PIPE IS 53.4 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 8.03 ESTIMATED PIPE DIAMETER(INCH) = 66.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 165.42 PIPE TRAVEL TIME(MIN.) = 2.70 Tc(MIN.) = 15.72 **************************************************************************** FLOW PROCESS FROM NODE 42.00 TO NODE 42.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< TOTAL NUMBER NUMBER OF STREAMS = 5 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 15.72 RAINFALL INTENSITY(INCH/HR) = 3.46 AREA -AVERAGED Fm(INCH/HR) = .49 AREA -AVERAGED Fp(INCH/HR) = .97 AREA -AVERAGED Ap = .50 EFFECTIVE STREAM AREA(ACRES) = 53.18 TOTAL STREAM AREA(ACRES) = 53.30 PEAK FLOW RATE(CFS) AT CONFLUENCE = 165.42 **************************************************************************** FLOW PROCESS FROM NODE .00 TO NODE 1.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< INITIAL SUBAREA FLOW-LENGTH(FEET) = 810.00 ELEVATION DATA: UPSTREAM(FEET) = 1528.00 DOWNSTREAM(FEET) = 1517.00 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 SUBAREA ANALYSIS USED MINIMUM TC(MIN.) = 10.464 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.420 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 7.30 .98 .10 32 10.46 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA RUNOFF(CFS) = 28.40 TOTAL AREA(ACRES) = 7.30 PEAK FLOW RATE(CFS) = 28.40 **************************************************************************** FLOW PROCESS FROM NODE 1.00 TO NODE 3.00 IS CODE = 6.1 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< >> >>>(STANDARD CURB SECTION USED)<< <<< UPSTREAM ELEVATION(FEET) = 1517.00 DOWNSTREAM ELEVATION(FEET) = 1509.00 STREET LENGTH(FEET) = 650.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 40.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 20.00 INSIDE STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 40.31 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: NOTE: STREET FLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREET FLOW RESULTS ARE BASED ON THE ASSUMPTION THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOW DEPTH(FEET) = .73 HALFSTREET FLOOD WIDTH(FEET) = 28.68 AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.79 PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 3.51 STREET FLOW TRAVEL TIME(MIN.) = 2.26 Tc(MIN.) = 12.73 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.930 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 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = 6.90 SUBAREA RUNOFF(CFS) = 23.80 EFFECTIVE AREA(ACRES) = 14.20 AREA -AVERAGED Fm(INCH/HR) _ .10 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .10 TOTAL AREA(ACRES) = 14.20 PEAK FLOW RATE(CFS) = 48.98 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) _ .78 HALFSTREET FLOOD WIDTH(FEET) = 30.91 FLOW VELOCITY(FEET/SEC.) = 5.03 DEPTH*VELOCITY(FT*FT/SEC.) = 3.90 **************************************************************************** FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ------------------------- ------------------------- MAINLINE Tc(MIN) = 12.73 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.930 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A .70 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) _ .70 SUBAREA RUNOFF(CFS) = 2.41 EFFECTIVE AREA(ACRES) = 14.90 AREA -AVERAGED Fm(INCH/HR) _ .10 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .10 TOTAL AREA(ACRES) = 14.90 PEAK FLOW RATE(CFS) = 51.40 **************************************************************************** FLOW PROCESS FROM NODE 3.00 TO NODE 42.00 IS CODE = 3.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 1509.00 DOWNSTREAM(FEET) = 1459.00 FLOW LENGTH(FEET) = 2200.00 MANNING'S N = .013 DEPTH OF FLOW IN 30.0 INCH PIPE IS 21.3 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 13.79 ESTIMATED PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 51.40 PIPE TRAVEL TIME(MIN.) = 2.66 Tc(MIN.) = 15.38 **************************************************************************** FLOW PROCESS FROM NODE 42.00 TO NODE 42.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- TOTAL NUMBER OF STREAMS = 5 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 15.38 RAINFALL INTENSITY(INCH/HR) = 3.51 AREA -AVERAGED Fm(INCH/HR) = .10 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .10 EFFECTIVE STREAM AREA(ACRES) = 14.90 TOTAL STREAM AREA(ACRES) = 14.90 PEAK FLOW RATE(CFS) AT CONFLUENCE = 51.40 **************************************************************************** FLOW PROCESS FROM NODE 10.00 TO NODE 12.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- INITIAL SUBAREA FLOW-LENGTH(FEET) = 1410.00 ELEVATION DATA: UPSTREAM(FEET) = 1525.00 DOWNSTREAM(FEET) = 1509.00 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 13.539 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.787 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 10.20 .98 .10 32 13.54 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA RUNOFF(CFS) = 33.87 TOTAL AREA(ACRES) = 10.20 PEAK FLOW RATE(CFS) = 33.87 **************************************************************************** FLOW PROCESS FROM NODE 3.00 TO NODE 12.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< ------------------------- ------------------------- MAINLINE Tc(MIN) = 13.54 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.787 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A .70 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = .70 SUBAREA RUNOFF(CFS) = 2.32 EFFECTIVE AREA(ACRES) = 10.90 AREA -AVERAGED Fm(INCH/HR) _ .10 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .10 TOTAL AREA(ACRES) = 10.90 PEAK FLOW RATE(CFS) = 36.19 **************************************************************************** FLOW PROCESS FROM NODE 12.00 TO NODE 51.00 IS CODE = 6.2 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>(STREET TABLE SECTION # 2 USED)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 1509.00 DOWNSTREAM ELEVATION(FEET) = 1489.00 STREET LENGTH(FEET) = 460.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 22.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 11.00 INSIDE STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 37.29 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) _ .49 HALFSTREET FLOOD WIDTH(FEET) = 16.57 AVERAGE FLOW VELOCITY(FEET/SEC.) = 6.35 PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 3.11 STREET FLOW TRAVEL TIME(MIN.) = 1.21 Tc(MIN.) = 14.75 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.598 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A .70 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) _ .70 SUBAREA RUNOFF(CFS) = 2.21 EFFECTIVE AREA(ACRES) = 11.60 AREA -AVERAGED Fm(INCH/HR) _ .10 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .10 TOTAL AREA(ACRES) = 11.60 PEAK FLOW RATE(CFS) = 36.54 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) _ .49 HALFSTREET FLOOD WIDTH(FEET) = 16.41 FLOW VELOCITY(FEET/SEC.) = 6.34 DEPTH*VELOCITY(FT*FT/SEC.) = 3.08 **************************************************************************** FLOW PROCESS FROM NODE 20.00 TO NODE 51.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< ------------------------- ------------------------- MAINLINE Tc(MIN) = 14.75 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.598 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN PUBLIC PARK A 12.90 .98 .85 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .85 SUBAREA AREA(ACRES) = 12.90 SUBAREA RUNOFF(CFS) = 32.15 EFFECTIVE AREA(ACRES) = 24.50 AREA -AVERAGED Fm(INCH/HR) _ .48 AREA -AVERAGED Fp(INCH/HR) _ .97 AREA -AVERAGED Ap = .49 TOTAL AREA(ACRES) = 24.50 PEAK FLOW RATE(CFS) = 68.69 **************************************************************************** FLOW PROCESS FROM NODE 51.00 TO NODE 30.00 IS CODE = 6.2 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STREET TABLE SECTION # 2 USED)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 1489.00 DOWNSTREAM ELEVATION(FEET) = 1462.00 STREET LENGTH(FEET) = 330.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 22.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 11.00 INSIDE STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 69.45 ***STREET FLOWING FULL*** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 64 HALFSTREET FLOOD WIDTH(FEET) = 22.00 AVERAGE FLOW VELOCITY(FEET/SEC.) = 5.88 PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 3.75 STREET FLOW TRAVEL TIME(MIN.) = .93 Tc(MIN.) = 15.68 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.467 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A .50 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = .50 SUBAREA RUNOFF(CFS) = 1.52 EFFECTIVE AREA(ACRES) = 25.00 AREA -AVERAGED Fm(INCH/HR) _ .47 AREA -AVERAGED Fp(INCH/HR) = .97 AREA -AVERAGED Ap = .49 TOTAL AREA(ACRES) = 25.00 PEAK FLOW RATE(CFS) = 68.69 NOTE: PEAK FLOW RATE DEFAULTED TO UPSTREAM VALUE END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = .64 HALFSTREET FLOOD WIDTH(FEET) = 22.00 FLOW VELOCITY(FEET/SEC.) = 5.85 DEPTH*VELOCITY(FT*FT/SEC.) = 3.72 **************************************************************************** FLOW PROCESS FROM NODE 22.00 TO NODE 30.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< ------------------------- ------------------------- MAINLINE Tc(MIN) = 15.68 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.467 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A 2.90 .98 .10 32 PUBLIC PARK A 6.60 .98 .85 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .62 SUBAREA AREA(ACRES) = 9.50 SUBAREA RUNOFF(CFS) = 24.47 EFFECTIVE AREA(ACRES) = 34.50 AREA -AVERAGED Fm(INCH/HR) _ .51 AREA -AVERAGED Fp(INCH/HR) _ .97 AREA -AVERAGED Ap = .52 TOTAL AREA(ACRES) = 34.50 PEAK FLOW RATE(CFS) = 91.80 **************************************************************************** FLOW PROCESS FROM NODE 30.00 TO NODE 36.00 IS CODE = 6.2 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>(STREET TABLE SECTION # 2 USED)<<<<< - -------------------- UPSTREAM ELEVATION(FEET) = 1482.00 DOWNSTREAM ELEVATION(FEET) = 1472.00 STREET LENGTH(FEET) = 990.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 22.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 11.00 INSIDE STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 93.84 ***STREET FLOWING FULL*** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: NOTE: STREET FLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREET FLOW RESULTS ARE BASED ON THE ASSUMPTION THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOW DEPTH(FEET) _ .77 HALFSTREET FLOOD WIDTH(FEET) = 22.00 AVERAGE FLOW VELOCITY(FEET/SEC.) = 5.31 PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 4.10 STREET FLOW TRAVEL TIME(MIN.) = 3.11 Tc(MIN.) = 18.79 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.111 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A 1.50 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = 1.50 SUBAREA RUNOFF(CFS) = 4.07 EFFECTIVE AREA(ACRES) = 36.00 AREA -AVERAGED Fm(INCH/HR) _ .49 AREA -AVERAGED Fp(INCH/HR) _ .97 AREA -AVERAGED Ap = .51 TOTAL AREA(ACRES) = 36.00 PEAK FLOW RATE(CFS) = 91.80 NOTE: PEAK FLOW RATE DEFAULTED TO UPSTREAM VALUE END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) _ .77 HALFSTREET FLOOD WIDTH(FEET) = 22.00 FLOW VELOCITY(FEET/SEC.) = 5.26 DEPTH*VELOCITY(FT*FT/SEC.) = 4.03 **************************************************************************** FLOW PROCESS FROM NODE 35.00 TO NODE 36.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ----------------------------- MAINLINE Tc(MIN) = 18.79 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.111 SUBAREA LOSS RATE DATA (AMC II) : DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A 5.70 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = 5.70 SUBAREA RUNOFF(CFS) = 15.46 EFFECTIVE AREA(ACRES) = 41.70 AREA -AVERAGED Fm(INCH/HR) _ .44 AREA -AVERAGED Fp(INCH/HR) = .97 AREA -AVERAGED Ap = .45 TOTAL AREA(ACRES) = 41.70 PEAK FLOW RATE(CFS) = 100.27 **************************************************************************** FLOW PROCESS FROM NODE 36.00 TO NODE 42.00 IS CODE = 6.2 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>(STREET TABLE SECTION # 2 USED)<< <<< UPSTREAM ELEVATION(FEET) = 1472.00 DOWNSTREAM ELEVATION(FEET) = 1459.00 STREET LENGTH(FEET) = 515.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 22.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 11.00 INSIDE STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 101.31 ***STREET FLOWING FULL*** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: NOTE: STREET FLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREET FLOW RESULTS ARE BASED ON THE ASSUMPTION THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOW DEPTH(FEET) = .69 HALFSTREET FLOOD WIDTH(FEET) = 22.00 AVERAGE FLOW VELOCITY(FEET/SEC.) = 7.21 PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 4.97 STREET FLOW TRAVEL TIME(MIN.) = 1.19 Tc(MIN.) = 19.98 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 2.999 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A .80 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = .80 SUBAREA RUNOFF(CFS) = 2.09 EFFECTIVE AREA(ACRES) = 42.50 AREA -AVERAGED Fm(INCH/HR) _ .43 AREA -AVERAGED Fp(INCH/HR) = .97 AREA -AVERAGED Ap = .44 TOTAL AREA(ACRES) = 42.50 PEAK FLOW RATE(CFS) = 100.27 NOTE: PEAK FLOW RATE DEFAULTED TO UPSTREAM VALUE END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = .69 HALFSTREET FLOOD WIDTH(FEET) = 22.00 FLOW VELOCITY(FEET/SEC.) = 7.19 DEPTH*VELOCITY(FT*FT/SEC.) = 4.94 **************************************************************************** FLOW PROCESS FROM NODE 42.00 TO NODE 42.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< ----------- TOTAL NUMBER OF STREAMS = 5 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE: TIME OF CONCENTRATION(MIN.) = 19.98 RAINFALL INTENSITY(INCH/HR) = 3.00 AREA -AVERAGED Fm(INCH/HR) _ .43 AREA -AVERAGED Fp(INCH/HR) _ .97 AREA -AVERAGED Ap = .44 EFFECTIVE STREAM AREA(ACRES) = 42.50 TOTAL STREAM AREA(ACRES) = 42.50 PEAK FLOW RATE(CFS) AT CONFLUENCE = 100.27 **************************************************************************** FLOW PROCESS FROM NODE 40.00 TO NODE 41.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<< <<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< ---------------------------------- INITIAL SUBAREA FLOW-LENGTH(FEET) = 510.00 ELEVATION DATA: UPSTREAM(FEET) = 1485.00 DOWNSTREAM(FEET) = 1472.00 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 7.667 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 5.327 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 3.10 .98 .10 32 7.67 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA RUNOFF(CFS) = 14.59 TOTAL AREA(ACRES) = 3.10 PEAK FLOW RATE(CFS) = 14.59 **************************************************************************** FLOW PROCESS FROM NODE 41.00 TO NODE 42.00 IS CODE = 3.1 >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<< <<< ------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 1472.00 DOWNSTREAM(FEET) = 1459.00 FLOW LENGTH(FEET) = 950.00 MANNING'S N = .013 DEPTH OF FLOW IN 21.0 INCH PIPE IS 14.3 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 8.36 ESTIMATED PIPE DIAMETER(INCH) = 21.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 14.59 PIPE TRAVEL TIME(MIN.) = 1.89 Tc(MIN.) = 9.56 **************************************************************************** FLOW PROCESS FROM NODE 41.00 TO NODE 42.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ---------------------------------------- MAINLINE Tc(MIN) = 9.56 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.666 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A 15.00 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = 15.00 SUBAREA RUNOFF(CFS) = 61.67 EFFECTIVE AREA(ACRES) = 18.10 AREA -AVERAGED Fm(INCH/HR) _ .10 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .10 TOTAL AREA(ACRES) = 18.10 PEAK FLOW RATE(CFS) = 74.42 **************************************************************************** FLOW PROCESS FROM NODE 42.00 TO NODE 42.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< ---------------------- TOTAL NUMBER OF STREAMS = 5 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 4 ARE: TIME OF CONCENTRATION(MIN.) = 9.56 RAINFALL INTENSITY(INCH/HR) = 4.67 AREA -AVERAGED Fm(INCH/HR) = .10 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .10 EFFECTIVE STREAM AREA(ACRES) = 18.10 TOTAL STREAM AREA(ACRES) = 18.10 PEAK FLOW RATE(CFS) AT CONFLUENCE = 74.42 **************************************************************************** FLOW PROCESS FROM NODE 40.00 TO NODE 41.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< INITIAL SUBAREA SUBAREA FLOW-LENGTH(FEET) = 980.00 ELEVATION DATA: UPSTREAM(FEET) = 1485.00 DOWNSTREAM(FEET) = 1465.00 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 10.409 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.434 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 3.30 .98 .10 32 10.41 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA RUNOFF(CFS) = 12.88 TOTAL AREA(ACRES) = 3.30 PEAK FLOW RATE(CFS) = 12.88 **************************************************************************** FLOW PROCESS FROM NODE 41.00 TO NODE 42.00 IS CODE = 6.2 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< »»> (STREET TABLE SECTION ## 2 USED) ««< UPSTREAM ELEVATION(FEET) = 1465.00 DOWNSTREAM ELEVATION(FEET) = 1459.00 STREET LENGTH(FEET) = 1320.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 22.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 11.00 INSIDE STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 15.33 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) _ .52 HALFSTREET FLOOD WIDTH(FEET) = 18.21 AVERAGE FLOW VELOCITY(FEET/SEC.) = 2.19 PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 1.14 STREET FLOW TRAVEL TIME(MIN.) = 10.06 Tc(MIN.) = 20.47 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 2.955 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A 1.90 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = 1.90 SUBAREA RUNOFF(CFS) = 4.89 EFFECTIVE AREA(ACRES) = 5.20 AREA -AVERAGED Fm(INCH/HR) _ .10 AREA -AVERAGED Fp(INCH/HR) _ .97 AREA -AVERAGED Ap = .10 TOTAL AREA(ACRES) = 5.20 PEAK FLOW RATE(CFS) = 13.37 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) _ .50 HALFSTREET FLOOD WIDTH(FEET) = 17.27 FLOW VELOCITY(FEET/SEC.) = 2.11 DEPTH*VELOCITY(FT*FT/SEC.) = 1.06 **************************************************************************** FLOW PROCESS FROM NODE 42.00 TO NODE 42.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<< <<< TOTAL NUMBER OF STREAMS = 5 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 5 ARE: TIME OF CONCENTRATION(MIN.) = 20.47 RAINFALL INTENSITY(INCH/HR) = 2.96 AREA -AVERAGED Fm(INCH/HR) _ .10 AREA -AVERAGED Fp(INCH/HR) _ .97 AREA -AVERAGED Ap = .10 EFFECTIVE STREAM AREA(ACRES) = 5.20 TOTAL STREAM AREA(ACRES) = 5.20 PEAK FLOW RATE(CFS) AT CONFLUENCE = 13.37 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 163.46 14.71 3.604 .98( .48) .50 49.58 10.00 1 165.42 15.72 3.462 .97( .49) .50 53.18 20.00 1 154.79 17.11 3.291 .98( .49) .50 53.30 15.00 2 51.40 15.38 3.507 .98( .10) .10 14.90 .00 3 100.27 19.98 2.999 4 74.42 9.56 4.666 5 13.37 20.47 2.955 97( .43) .44 42.50 10.00 98( .10) .10 18.10 40.00 97( .10) .10 5.20 40.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 5 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 348.8 9.56 4.666 .975( .331) .34 82.4 40.00 2 374.1 14.71 3.604 .975( .351) .36 116.9 10.00 3 376.2 15.38 3.507 .975( .354) .36 121.6 .00 4 376.2 15.72 3.462 .975( .356) .37 123.6 20.00 5 363.1 17.11 3.291 .975( .357) .37 127.0 15.00 6 343.2 19.98 2.999 .975( .359) .37 133.9 10.00 7 337.8 20.47 2.955 .975( .359) .37 134.0 40.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 376.24 Tc(MIN.) = 15.38 EFFECTIVE AREA(ACRES) = 121.63 AREA -AVERAGED Fm(INCH/HR) _ .35 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED AP = .36 TOTAL AREA(ACRES) = 134.00 **************************************************************************** FLOW PROCESS FROM NODE 42.00 TO NODE 106.00 IS CODE = 3.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<<<<< ELEVATION DATA: UPSTREAM(FEET) = 1459.00 DOWNSTREAM(FEET) = 1451.00 FLOW LENGTH(FEET) = 1400.00 MANNING'S N = .013 DEPTH OF FLOW IN 78.0 INCH PIPE IS 62.2 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 13.27 ESTIMATED PIPE DIAMETER(INCH) = 78.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 376.24 PIPE TRAVEL TIME(MIN.) = 1.76 Tc(MIN.) = 17.14 **************************************************************************** FLOW PROCESS FROM NODE 106.00 TO NODE 106.00 IS CODE = 10 ---------------------------------------------------------------------------- >>>>>MAIN-STREAM MEMORY COPIED ONTO MEMORY BANK # 1 <<<<< **************************************************************************** FLOW PROCESS FROM NODE 100.00 TO NODE 101.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<< <<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< INITIAL SUBAREA FLOW-LENGTH(FEET) = 750.00 ELEVATION DATA: UPSTREAM(FEET) = 1519.00 DOWNSTREAM(FEET) = 1504.00 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE))** .20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 9.391 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.716 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 6.34 .98 .10 32 9.39 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA RUNOFF(CFS) = 26.36 TOTAL AREA(ACRES) = 6.34 PEAK FLOW RATE(CFS) = 26.36 **************************************************************************** FLOW PROCESS FROM NODE 101.00 TO NODE 102.00 IS CODE = 4.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>USING USER-SPECIFIED PIPESIZE (EXISTING ELEMENT)<<<<< ELEVATION DATA: UPSTREAM(FEET) = 1496.50 DOWNSTREAM(FEET) = 1495.00 FLOW LENGTH(FEET) = 770.00 MANNING'S N = .013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 21.9 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 4.72 GIVEN PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 26.36 PIPE TRAVEL TIME(MIN.) = 2.72 Tc(MIN.) = 12.11 **************************************************************************** FLOW PROCESS FROM NODE 102.00 TO NODE 102.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>->ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< MAINLINE Tc(MIN) = 12.11 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.049 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/. SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A 8.72 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = 8.72 SUBAREA RUNOFF(CFS) = 31.01 EFFECTIVE AREA(ACRES) = 15.06 AREA -AVERAGED Fm(INCH/HR) _ .10 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .10 TOTAL AREA(ACRES) = 15.06 PEAK FLOW RATE(CFS) = 53.56 **************************************************************************** FLOW PROCESS FROM NODE 102.00 TO NODE 302.00 IS CODE = 4.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING USER-SPECIFIED PIPESIZE (EXISTING ELEMENT)<<<<< ELEVATION DATA: UPSTREAM(FEET) = 1495.00 DOWNSTREAM(FEET) = 1480.00 FLOW LENGTH(FEET) = 600.00 MANNING'S N = .013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 16.1 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 14.51 GIVEN PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 53.56 PIPE TRAVEL TIME(MIN.) _ .69 Tc(MIN.) = 12.80 **************************************************************************** FLOW PROCESS FROM NODE 302.00 TO NODE 302.00 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.) = 12.80 RAINFALL INTENSITY(INCH/HR) = 3.92 AREA -AVERAGED Fm(INCH/HR) _ .10 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .10 EFFECTIVE STREAM AREA(ACRES) = 15.06 TOTAL STREAM AREA(ACRES) = 15.06 PEAK FLOW RATE(CFS) AT CONFLUENCE = 53.56 **************************************************************************** FLOW PROCESS FROM NODE 300.00 TO NODE 301.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<< <<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< INITIAL SUBAREA FLOW-LENGTH(FEET) = 900.00 ELEVATION DATA: UPSTREAM(FEET) = 1507.00 DOWNSTREAM(FEET) = 1489.00 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 13.690 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.762 SUBAREA Tc AND LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp LAND USE GROUP (ACRES) (INCH/HR) RESIDENTIAL 113-4 DWELLINGS/ACRE" A 8.95 .98 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA RUNOFF(CFS) = 25.59 TOTAL AREA(ACRES) = 8.95 PEAK FLOW RATE(CFS) Ap SCS Tc (DECIMAL) CN (MIN.) .60 32 13.69 .98 25.59 **************************************************************************** FLOW PROCESS FROM NODE 301.00 TO NODE 302.00 IS CODE = 5.1 ---------------------------------------------------------------------------- >>>>>COMPUTE TRAPEZOIDAL CHANNEL FLOW<<<<< >>>>>TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) <<<< ELEVATION DATA: UPSTREAM(FEET) = 1489.00 DOWNSTREAM(FEET) = 1487.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 700.00 CHANNEL SLOPE _ .0029 CHANNEL BASE(FEET) = 25.00 "Z" FACTOR = .000 MANNING'S FACTOR = .025 MAXIMUM DEPTH(FEET) = 1.00 CHANNEL FLOW THRU SUBAREA(CFS) = 25.59 FLOW VELOCITY(FEET/SEC) = 1.98 FLOW DEPTH(FEET) _ .52 TRAVEL TIME(MIN.) = 5.88 Tc(MIN.) = 19.57 **************************************************************************** FLOW PROCESS FROM NODE 302.00 TO NODE 302.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- MAINLINE TC(MIN) = 19.57 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.036 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN RESIDENTIAL "3-4 DWELLINGS/ACRE" A 9.84 .98 .60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA AREA(ACRES) = 9.84 SUBAREA RUNOFF(CFS) = 21.70 EFFECTIVE AREA(ACRES) = 18.79 AREA -AVERAGED Fm(INCH/HR) _ .59 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .60 TOTAL AREA(ACRES) = 18.79 PEAK FLOW RATE(CFS) = 41.44 **************************************************************************** FLOW PROCESS FROM NODE 302.00 TO NODE 302.00 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.) = 19.57 RAINFALL INTENSITY(INCH/HR) = 3.04 AREA -AVERAGED Fm(INCH/HR) _ .59 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .60 EFFECTIVE STREAM AREA(ACRES) = 18.79 TOTAL STREAM AREA(ACRES) = 18.79 PEAK FLOW RATE(CFS) AT CONFLUENCE = 41.44 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 53.56 12.80 3.917 .98( .10) .10 15.06 100.00 2 41.44 19.57 3.036 .98( .59) .60 18.79 300.00 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 SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 90.4 12.80 3.917 .975( .317) .32 27.3 100.00 2 82.6 19.57 3.036 .975( .368) .38 33.9 300.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 90.41 TC(MIN.) = 12.80 EFFECTIVE AREA(ACRES) = 27.35 AREA -AVERAGED Fm(INCH/HR) _ .32 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .32 TOTAL AREA(ACRES) = 33.85 **************************************************************************** FLOW PROCESS FROM NODE 302.00 TO NODE 103.00 IS CODE = 3.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >> >>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 1480.00 DOWNSTREAM(FEET) = 1458.25 FLOW LENGTH(FEET) = B50.00 MANNING'S N = .013 DEPTH OF FLOW IN 36.0 INCH PIPE IS 26.0 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 16.57 ESTIMATED PIPE DIAMETER(INCH) = 36.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 90.41 PIPE TRAVEL TIME(MIN.) = .85 Tc(MIN.) = 13.65 **************************************************************************** FLOW PROCESS FROM NODE 103.00 TO NODE 103.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< MAINLINE Tc(MIN) = 13.65 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.768 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN RESIDENTIAL "3-4 DWELLINGS/ACRE" A 5.78 .98 .60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA AREA(ACRES) = 5.78 SUBAREA RUNOFF(CFS) = 16.56 EFFECTIVE AREA(ACRES) = 33.13 AREA -AVERAGED Fm(INCH/HR) _ .36 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .37 TOTAL AREA(ACRES) = 39.63 PEAK FLOW RATE(CFS) = 101.50 FLOW PROCESS FROM NODE 103.00 TO NODE 104.00 IS CODE = 4.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>USING USER-SPECIFIED PIPESIZE (EXISTING ELEMENT)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 1458.25 DOWNSTREAM(FEET) = 1444.70 FLOW LENGTH(FEET) = 440.00 MANNING'S N = .013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 21.5 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 18.62 GIVEN PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 101.50 PIPE TRAVEL TIME(MIN.) = .39 Tc(MIN.) = 14.05 **************************************************************************** FLOW PROCESS FROM NODE 104.00 TO NODE 104.00 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.) = 14.05 RAINFALL INTENSITY(INCH/HR) = 3.70 AREA -AVERAGED Fm(INCH/HR) = .36 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .37 EFFECTIVE STREAM AREA(ACRES) = 33.13 TOTAL STREAM AREA(ACRES) = 39.63 PEAK FLOW RATE(CFS) AT CONFLUENCE = 101.50 FLOW PROCESS FROM NODE 200.00 TO NODE 201.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<< <<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- INITIAL SUBAREA FLOW-LENGTH(FEET) = 900.00 ELEVATION DATA: UPSTREAM(FEET) = 1493.00 DOWNSTREAM(FEET) = 1475.00 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 13.690 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.762 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.) RESIDENTIAL "3-4 DWELLINGS/ACRE" A 9.59 .98 .60 32 13.69 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA RUNOFF(CFS) = 27.42 TOTAL AREA(ACRES) = 9.59 PEAK FLOW RATE(CFS) = 27.42 **************************************************************************** FLOW PROCESS FROM NODE 201.00 TO NODE 202.00 IS CODE = 6.1 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>(STANDARD CURB SECTION USED)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 1475.00 DOWNSTREAM ELEVATION(FEET) = 1467.00 STREET LENGTH(FEET) = 510.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 30.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 25.00 INSIDE STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 44.97 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = .59 HALFSTREET FLOOD WIDTH(FEET) = 21.82 AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.54 PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 2.70 STREET FLOW TRAVEL TIME(MIN.) = 1.87 Tc(MIN.) = 15.56 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.483 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN RESIDENTIAL 113-4 DWELLINGS/ACRE" A 13.45 .98 .60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA AREA(ACRES) = 13.45 SUBAREA RUNOFF(CFS) = 35.08 EFFECTIVE AREA(ACRES) = 23.04 AREA -AVERAGED Fm(INCH/HR) _ .59 AREA -AVERAGED Fp(INCH/HR) = .97 AREA -AVERAGED Ap = .60 TOTAL AREA(ACRES) = 23.04 PEAK FLOW RATE(CFS) = 60.10 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = .65 HALFSTREET FLOOD WIDTH(FEET) = 24.45 FLOW VELOCITY(FEET/SEC.) = 4.87 DEPTH*VELOCITY(FT*FT/SEC.) = 3.15 **************************************************************************** FLOW PROCESS FROM NODE 202.00 TO NODE 104.00 IS CODE = 4.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>USING USER-SPECIFIED PIPESIZE (EXISTING ELEMENT)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 1460.00 DOWNSTREAM(FEET) = 1444.70 FLOW LENGTH(FEET) = 430.00 MANNING'S N = .013 DEPTH OF FLOW IN 36.0 INCH PIPE IS 17.8 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 17.26 GIVEN PIPE DIAMETER(INCH) = 36.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 60.10 PIPE TRAVEL TIME(MIN.) = .42 Tc(MIN.) = 15.98 **************************************************************************** FLOW PROCESS FROM NODE 104.00 TO NODE 104.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< ------------------------- ------------------------- MAINLINE Tc(MIN) = 15.98 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.429 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN RESIDENTIAL "3-4 DWELLINGS/ACRE" A 15.00 .98 .60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 60 SUBAREA AREA(ACRES) = 15.00 SUBAREA RUNOFF(CFS) = 38.39 EFFECTIVE AREA(ACRES) = 38.04 AREA -AVERAGED Fm(INCH/HR) _ .59 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .60 TOTAL AREA(ACRES) = 38.04 PEAK FLOW RATE(CFS) = 97.36 **************************************************************************** FLOW PROCESS FROM NODE 104.00 TO NODE 104.00 IS CODE = 1 >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >> >>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< TOTAL NUMBER OF STREAMS = 2 Q Tc CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: Ap TIME OF CONCENTRATION(MIN.) = 15.98 SOURCE NUMBER RAINFALL INTENSITY(INCH/HR) = 3.43 (MIN.) (INCH/HR) AREA -AVERAGED Fm(INCH/HR) _ .59 (ACRES) AREA -AVERAGED Fp(INCH/HR) _ .98 1 195.4 AREA -AVERAGED Ap = .60 3.704 .975( .475) EFFECTIVE STREAM AREA(ACRES) 38.04 66.6 100.00 TOTAL STREAM AREA(ACRES) = 38.04 171.3 20.84 PEAK FLOW RATE(CFS) AT CONFLUENCE = 97.36 .975( .490) .50 ** CONFLUENCE DATA ** 300.00 3 STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 101.50 14.05 3.704 .98( .36) .37 33.13 100.00 1 91.24 20.84 2.923 .98( .40) .41 39.63 300.00 2 97.36 15.98 3.429 .98( .59) .60 38.04 200.00 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 SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 195.4 14.05 3.704 .975( .475) .49 66.6 100.00 2 171.3 20.84 2.923 .975( .490) .50 77.7 300.00 3 195.9 15.98 3.429 .975( .484) .50 73.0 200.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 195.94 Tc(MIN.) = 15.98 EFFECTIVE AREA(ACRES) = 73.01 AREA -AVERAGED Fm(INCH/HR) _ .48 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .50 TOTAL AREA(ACRES) = 77.67 **************************************************************************** FLOW PROCESS FROM NODE 104.00 TO NODE 105.00 IS CODE = 4.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >>>>>USING USER-SPECIFIED PIPESIZE (EXISTING ELEMENT)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 1444.70 DOWNSTREAM(FEET) = 1438.27 FLOW LENGTH(FEET) = 250.00 MANNING`S N = .013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 34.7 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 20.14 GIVEN PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 195.94 PIPE TRAVEL TIME(MIN.) _ .21 Tc(MIN.) = 16.18 **************************************************************************** FLOW PROCESS FROM NODE 105.00 TO NODE 105.00 IS CODE = 8.1 ----------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< MAINLINE Tc(MIN) = 16.18 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.402 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A 1.31 .98 .10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .10 SUBAREA AREA(ACRES) = 1.31 SUBAREA RUNOFF(CFS) = 3.90 EFFECTIVE AREA(ACRES) = 74.32 AREA -AVERAGED Fm(INCH/HR) _ .48 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .49 TOTAL AREA(ACRES) = 78.98 PEAK FLOW RATE(CFS) = 195.94 NOTE: PEAK FLOW RATE DEFAULTED TO UPSTREAM VALUE FLOW PROCESS FROM NODE 105.00 TO NODE 106.00 IS CODE = 4.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>USING USER-SPECIFIED PIPESIZE (EXISTING ELEMENT)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- ELEVATION DATA: UPSTREAM(FEET) = 1438.27 DOWNSTREAM(FEET) = 1435.45 FLOW LENGTH(FEET) = 100.00 MANNING'S N = .013 DEPTH OF FLOW IN 48.0 INCH PIPE IS 33.5 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 20.93 GIVEN PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 195.94 PIPE TRAVEL TIME(MIN.) _ .08 Tc(MIN.) = 16.26 FLOW PROCESS FROM NODE 106.00 TO NODE 106.00 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.) = 16.26 RAINFALL INTENSITY(INCH/HR) = 3.39 AREA -AVERAGED Fm(INCH/HR) _ .48 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .49 EFFECTIVE STREAM AREA(ACRES) = 74.32 TOTAL STREAM AREA(ACRES) = 78.98 PEAK FLOW RATE(CFS) AT CONFLUENCE = 195.94 **************************************************************************** FLOW PROCESS FROM NODE 303.00 TO NODE 304.00 IS CODE = 2.1 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< >>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- INITIAL SUBAREA FLOW-LENGTH(FEET) = 700.00 ELEVATION DATA: UPSTREAM(FEET) = 1465.00 DOWNSTREAM(FEET) = 1455.00 Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 13.242 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.838 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.) RESIDENTIAL "3-4 DWELLINGS/ACRE" A 4.89 .98 .60 32 13.24 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA RUNOFF(CFS) = 14.31 TOTAL AREA(ACRES) = 4.89 PEAK FLOW RATE(CFS) = 14.31 **************************************************************************** FLOW PROCESS FROM NODE 304.00 TO NODE 106.00 IS CODE = 6.1 ---------------------------------------------------------------------------- >>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<< <<< >>>>>(STANDARD CURB SECTION USED)<< <<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION(FEET) = 1455.00 DOWNSTREAM ELEVATION(FEET) = 1451.00 STREET LENGTH(FEET) = 730.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 40.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 35.00 INSIDE STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 21.00 STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: NOTE: STREET FLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREET FLOW RESULTS ARE BASED ON THE ASSUMPTION THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOW DEPTH(FEET) = .68 HALFSTREET FLOOD WIDTH(FEET) = 26.08 AVERAGE FLOW VELOCITY(FEET/SEC.) = 3.00 PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 2.04 STREET FLOW TRAVEL TIME(MIN.) = 4.05 Tc(MIN.) = 17.29 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.270 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN RESIDENTIAL 113-4 DWELLINGS/ACRE" A 5.52 .98 .60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA AREA(ACRES) = 5.52 SUBAREA RUNOFF(CFS) = 13.34 EFFECTIVE AREA(ACRES) = 10.41 AREA -AVERAGED Fm(INCH/HR) _ .59 AREA -AVERAGED Fp(INCH/HR) = .98 AREA -AVERAGED Ap = .60 TOTAL AREA(ACRES) = 10.41 PEAK FLOW RATE(CFS) = 25.15 END OF SUBAREA STREET FLOW HYDRAULICS: Q DEPTH(FEET) _ .72 HALFSTREET FLOOD WIDTH(FEET) = 28.01 Intensity FLOW VELOCITY(FEET/SEC.) = 3.13 DEPTH*VELOCITY(FT*FT/SEC.) = 2.25 **************************************************************************** FLOW PROCESS FROM NODE 106.00 TO NODE 106.00 IS CODE ---------------------------------------------------------------------------- = 1 >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< (MIN.) >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<< <<< (INCH/HR) TOTAL NUMBER OF STREAMS = 2 (ACRES) CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: 1 TIME OF CONCENTRATION(MIN.) = 17.29 14.33 RAINFALL INTENSITY(INCH/HR) = 3.27 .975( .481) AREA -AVERAGED Fm(INCH/HR) _ .59 76.5 AREA -AVERAGED Fp(INCH/HR) _ .98 2 AREA -AVERAGED Ap = .60 16.26 EFFECTIVE STREAM AREA(ACRES) = 10.41 .975( .490) TOTAL STREAM AREA(ACRES) = 10.41 84.1 PEAK FLOW RATE(CFS) AT CONFLUENCE = 25.15 3 ** CONFLUENCE DATA ** 21.14 STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 195.76 14.33 3.660 .98( .47) .48 67.88 100.00 1 172.12 21.14 2.899 .98( .48) .50 78.98 300.00 1 195.94 16.26 3.392 .98( .48) .49 74.32 200.00 2 25.15 17.29 3.270 .98( .59) .60 10.41 303.00 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 SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 219.6 14.33 3.660 .975( .481) .49 76.5 100.00 2 220.7 16.26 3.392 .975( .490) .50 84.1 200.00 3 193.8 21.14 2.899 .975( .496) .51 89.4 300.00 4 216.1 17.29 3.270 .975( .491) .50 85.7 303.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 220.68 Tc(MIN.) = 16.26 EFFECTIVE AREA(ACRES) = 84.11 AREA -AVERAGED Fm(INCH/HR) _ .49 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .50 TOTAL AREA(ACRES) = 89.39 **************************************************************************** FLOW PROCESS FROM NODE 106.00 TO NODE 106.00 IS CODE = 11 ---------------------------------------------------------------------------- >>>>>CONFLUENCE MEMORY BANK ## 1 WITH THE MAIN -STREAM MEMORY<<<<< ** MAIN STREAM CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 219.63 14.33 3.660 .98( .48) .49 76.5 100.00 2 220.68 16.26 3.392 .98( .49) .50 84.1 200.00 3 216.06 17.29 3.270 .98( .49) .50 85.7 303.00 4 193.80 21.14 2.899 .98( .50) .51 89.4 300.00 ** MEMORY BANK ## 1 CONFLUENCE DATA ** .411) .42 208.2 303.00 STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) .975( (ACRES) NODE 1 348.80 11.33 4.214 .97( .33) .34 82.4 40.00 2 374.10 16.46 3.367 .98( .35) .36 116.9 10.00 3 376.24 17.14 3.287 .98( .35) .36 121.6 .00 4 376.21 17.48 3.249 .97( .36) .37 123.6 20.00 5 363.10 18.87 3.103 .98( .36) .37 127.0 15.00 6 343.16 21.78 2.847 .98( .36) .37 133.9 10.00 7 337.83 22.28 2.809 .98( .36) .37 134.0 40.00 ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 583.2 14.33 3.660 .975( .402) .41 179.1 100.00 2 593.8 16.26 3.392 .975( .409) .42 199.7 200.00 3 592.3 17.29 3.270 .975( .411) .42 208.2 303.00 4 541.4 21.14 2.899 .975( .414) .42 221.8 300.00 5 552.7 11.33 4.214 .975( .394) .40 142.9 40.00 6 593.9 16.46 3.367 .975( .409) .42 201.4 10.00 7 593.0 17.14 3.287 .975( .410) .42 207.1 .00 8 591.2 17.48 3.249 .975( .412) .42 209.5 20.00 9 570.0 18.87 3.103 .975( .412) .42 214.3 15.00 10 532.8 21.78 2.847 .975( .414) .42 223.3 10.00 11 524.4 22.28 2.809 .975( .413) .42 223.4 40.00 TOTAL AREA(ACRES) = 223.39 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 593.87 Tc(MIN.) = 16.465 EFFECTIVE AREA(ACRES) = 201.37 AREA -AVERAGED Fm(INCH/HR) _ .41 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .42 TOTAL AREA(ACRES) = 223.39 **************************************************************************** FLOW PROCESS FROM NODE 106.00 TO NODE 107.00 IS CODE = 4.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< >> >>>USING USER-SPECIFIED PIPESIZE (EXISTING ELEMENT)<< <<< - ------------- ELEVATION DATA: UPSTREAM(FEET) = 1435.45 DOWNSTREAM(FEET) = 1411.88 FLOW LENGTH(FEET) = 1250.00 MANNING'S N = .013 ASSUME FULL -FLOWING PIPELINE PIPE -FLOW VELOCITY(FEET/SEC.) = 30.25 GIVEN PIPE DIAMETER(INCH) = 60.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 593.87 PIPE TRAVEL TIME(MIN.) _ .69 Tc(MIN.) = 17.15 **************************************************************************** FLOW PROCESS FROM NODE 107.00 TO NODE 107.00 IS CODE = 8.1 >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< ------------------------- ------------------------- MAINLINE Tc(MIN) = 17.15 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.286 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN RESIDENTIAL 113-4 DWELLINGS/ACRE" A 37.62 .98 .60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA AREA(ACRES) = 37.62 SUBAREA RUNOFF(CFS) = 91.44 EFFECTIVE AREA(ACRES) = 238.99 AREA -AVERAGED Fm(INCH/HR) _ .44 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .45 TOTAL AREA(ACRES) = 261.01 PEAK FLOW RATE(CFS) = 612.77 ** PEAK FLOW RATE TABLE ** STREAM Q Tc NUMBER (CFS) (MIN.) 1 609.1 15.03 2 613.5 16.95 3 609.8 17.98 4 560.2 21.89 5 588.4 12.07 6 612.8 17.15 7 610.7 17.83 8 608.5 18.17 9 588.5 19.59 10 551.8 22.55 11 543.4 23.06 NEW PEAK FLOW DATA ARE: PEAK FLOW RATE(CFS) _ AREA -AVERAGED Fm(INCH/HR 10.00 AREA -AVERAGED Ap = .45 Intensity Fp(Fm) Ap Ae SOURCE (INCH/HR) (INCH/HR) (ACRES) NODE 3.556 .975( .433) .44 216.7 100.00 3.309 .975( .437) .45 237.3 200.00 3.194 .975( .438) .45 245.9 303.00 2.838 .975( .439) .45 259.4 300.00 4.057 .975( .434) .45 180.5 40.00 3.286 .975( .437) .45 239.0 10.00 3.210 .975( .437) .45 244.7 .00 3.174 .975( .438) .45 247.1 20.00 3.034 .975( .438) .45 251.9 15.00 2.788 .975( .438) .45 260.9 10.00 2.751 .975( .438) .45 261.0 40.00 613.49 Tc(MIN.) = 16.95 _ .44 AREA -AVERAGED Fp(INCH/HR) _ .98 EFFECTIVE AREA(ACRES) = 237.32 **************************************************************************** FLOW PROCESS FROM NODE 107.00 TO NODE 108.00 IS CODE = 4.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>USING USER-SPECIFIED PIPESIZE (EXISTING ELEMENT)<< <<< ELEVATION DATA: UPSTREAM(FEET) = 1411.88 DOWNSTREAM(FEET) = 1398.00 FLOW LENGTH(FEET) = 650.00 MANNING'S N = .013 ASSUME FULL -FLOWING PIPELINE PIPE -FLOW VELOCITY(FEET/SEC.) = 31.24 GIVEN PIPE DIAMETER(INCH) = 60.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 613.49 PIPE TRAVEL TIME(MIN.) _ .35 Tc(MIN.) = 17.30 **************************************************************************** FLOW PROCESS FROM NODE 108.00 TO NODE 108.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ------------------------- ------------------------- MAINLINE Tc(MIN) = 17.30 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.269 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN RESIDENTIAL "3-4 DWELLINGS/ACRE" A 17.44 .98 .60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .60 SUBAREA AREA(ACRES) = 17.44 SUBAREA RUNOFF(CFS) = 42.13 EFFECTIVE AREA(ACRES) = 254.76 AREA -AVERAGED Fm(INCH/HR) _ .45 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .46 TOTAL AREA(ACRES) = 278.45 PEAK FLOW RATE(CFS) = 647.09 **************************************************************************** FLOW PROCESS FROM NODE 108.00 TO NODE 109.00 IS CODE = 4.1 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<< <<< >> >>>USING USER-SPECIFIED PIPESIZE (EXISTING ELEMENT)<<<<< ELEVATION DATA: UPSTREAM(FEET) = 1398.00 DOWNSTREAM(FEET) = 1385.92 FLOW LENGTH(FEET) = 630.00 MANNING'S N = .013 ASSUME FULL -FLOWING PIPELINE PIPE -FLOW VELOCITY(FEET/SEC.) = 32.96 GIVEN PIPE DIAMETER(INCH) = 60.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 647.09 PIPE TRAVEL TIME(MIN.) _ .32 Tc(MIN.) = 17.62 **************************************************************************** FLOW PROCESS FROM NODE 109.00 TO NODE 109.00 IS CODE = 8.1 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< <<< ------------------------- ------------------------- MAINLINE TC(MIN) = 17.62 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.233 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN COMMERCIAL A 8.34 .98 .10 32 PUBLIC PARK A 2.68 .98 .85 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) _ .97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = .28 SUBAREA AREA(ACRES) = 11.02 SUBAREA RUNOFF(CFS) = 29.34 EFFECTIVE AREA(ACRES) = 265.78 AREA -AVERAGED Fm(INCH/HR) _ .44 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .45 TOTAL AREA(ACRES) = 289.47 PEAK FLOW RATE(CFS) = 668.26 END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 289.47 TC(MIN.) = 17.62 EFFECTIVE AREA(ACRES) = 265.78 AREA -AVERAGED Fm(INCH/HR)= .44 AREA -AVERAGED Fp(INCH/HR) _ .98 AREA -AVERAGED Ap = .45 PEAK FLOW RATE(CFS) = 668.26 ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae SOURCE NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE 1 655.4 12.76 3.924 .975( .438) .45 208.9 40.00 2 668.0 15.70 3.464 .975( .437) .45 245.2 100.00 3 668.3 17.62 3.233 .975( .440) .45 265.8 200.00 4 667.1 17.82 3.211 .975( .440) .45 267.5 10.00 5 663.7 18.50 3.140 .975( .440) .45 273.2 .00 6 662.6 18.65 3.124 .975( .440) .45 274.3 303.00 7 661.0 18.84 3.106 .975( .441) .45 275.6 20.00 8 638.5 20.28 2.972 .975( .441) .45 280.3 15.00 9 606.6 22.62 2.783 .975( .441) .45 287.8 300.00 10 597.3 23.29 2.735 .975( .441) .45 289.3 10.00 11 588.3 23.81 2.699 .975( .441) .45 289.5 40.00 END OF RATIONAL METHOD ANALYSIS ------------