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MED100.RE5 <br />UPSTREAM ELEVATION(FEET) = 148.60 DOWNSTREAM ELEVATION(FEET) = 144.50 <br />STREET LENGTH(FEET) = 442.00 CURB HEIGHT(INCHES) = 6.0 <br />STREET HALFWIDTH(FEET) = 30.00 <br />DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 15.00 <br />INSIDE STREET CROSSFALL(DECIMAL) = 0.020 <br />OUTSIDE STREET CROSSFALL(DECIMAL) = 0.020 <br />SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 <br />STREET PARKWAY CROSSFALL(DECIMAL) = 0.020 <br />Manning's FRICTION FACTOR for Streetflow Section(curb-to-curb) = 0.0130 <br />Manning's FRICTION FACTOR for Back -of -Walk Flow Section = 0.0200 <br />**TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 14.24 <br />STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: <br />STREET FLOW DEPTH(FEET) = 0.51 <br />HALFSTREET FLOOD WIDTH(FEET) = 20.04 <br />AVERAGE FLOW VELOCITY(FEET/SEC.) = 3.68 <br />PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 1.89 <br />STREET FLOW TRAVEL TIME(MIN.) = 2.00 Tc(MIN.) = 8.28 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.634 <br />SUBAREA LOSS RATE DATA(AMC II): <br />DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap <br />LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) <br />COMMERCIAL B 5.21 0.30 0.100 <br />SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.30 <br />SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 <br />SUBAREA AREA(ACRES) = 5.21 SUBAREA RUNOFF(CFS) = 21. <br />EFFECTIVE AREA(ACRES) = 5.91 AREA -AVERAGED Fm(INCH/HR) <br />AREA -AVERAGED Fp(INCH/HR) = 0.30 AREA -AVERAGED Ap = 0.10 <br />TOTAL AREA(ACRES) = 5.9 PEAK FLOW RATE(CFS) = <br />END OF SUBAREA STREET FLOW HYDRAULICS: <br />DEPTH(FEET) = 0.60 HALFSTREET FLOOD WIDTH(FEET) = 28.83 <br />FLOW VELOCITY(FEET/SEC.) = 4.07 DEPTH*VELOCITY(FT*FT/SEC.) <br />*NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, <br />AND L = 442.0 FT WITH ELEVATION -DROP = 4.1 FT, IS <br />WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE <br />LONGEST FLOWPATH FROM NODE 400.00 TO NODE 402.00 = <br />SCS <br />CN <br />56 <br />59 <br />= 0.03 <br />24.49 <br />= 2.45 <br />20.8 CFS, <br />402.00 <br />718.00 FEET. <br />FLOW PROCESS FROM NODE 402.00 TO NODE 430.00 IS CODE = 41 <br />>>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< <br />>>>>>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT)<<<<< <br />---------------------------------------------------------------------------- <br />----------------------------------------- <br />ELEVATION DATA: UPSTREAM(FEET) = 139.00 DOWNSTREAM(FEET) = 135.80 <br />FLOW LENGTH(FEET) = 26.00 MANNING'S N = 0.013 <br />DEPTH OF FLOW IN 18.0 INCH PIPE IS 10.9 INCHES <br />Page 3 <br />