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MED2.OUT <br />>>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< <br />>>>>>(STANDARD CURB SECTION USED)<<<<< <br />---------------------------------------------------------------------------- <br />--------- <br />UPSTREAM ELEVATION(FEET) = 147.50 DOWNSTREAM ELEVATION(FEET) = 144.70 <br />STREET LENGTH(FEET) = 345.00 CURB HEIGHT(INCHES) = 6.0 <br />STREET HALFWIDTH(FEET) = 22.00 <br />DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 11.00 <br />INSIDE STREET CROSSFALL(DECIMAL) = 0.020 <br />OUTSIDE STREET CROSSFALL(DECIMAL) = 0.020 <br />SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 <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) = 0.48 <br />STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: <br />STREET FLOW DEPTH(FEET) = 0.16 <br />HALFSTREET FLOOD WIDTH(FEET) = 1.50 <br />AVERAGE FLOW VELOCITY(FEET/SEC.) = 1.96 <br />PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 0.31 <br />STREET FLOW TRAVEL TIME(MIN.) = 2.93 Tc(MIN.) = 7.93 <br />* 2 YEAR RAINFALL INTENSITY(INCH/HR) = 1.737 <br />SUBAREA LOSS RATE DATA(AMC II): <br />DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS <br />LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN <br />COMMERCIAL B 0.51 0.30 0.100 56 <br />SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.30 <br />SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 <br />SUBAREA AREA(ACRES) = 0.51 SUBAREA RUNOFF(CFS) = 0.78 <br />EFFECTIVE AREA(ACRES) = 0.56 AREA -AVERAGED Fm(INCH/HR) = 0.03 <br />AREA -AVERAGED Fp(INCH/HR) = 0.30 AREA -AVERAGED Ap = 0.10 <br />TOTAL AREA(ACRES) = 0.6 PEAK FLOW RATE(CFS) = 0.86 <br />END OF SUBAREA STREET FLOW HYDRAULICS: <br />DEPTH(FEET) = 0.20 HALFSTREET FLOOD WIDTH(FEET) = 3.76 <br />FLOW VELOCITY(FEET/SEC.) = 1.66 DEPTH*VELOCITY(FT*FT/SEC.) = 0.33 <br />LONGEST FLOWPATH FROM NODE 410.00 TO NODE 430.00 = 367.00 FEET. <br />FLOW PROCESS FROM NODE 430.00 TO NODE 430.00 IS CODE = 1 <br />---------------------------------------------------------------------------- <br />>>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< <br />---------------------------------------------------------------------------- <br />TOTAL NUMBER OF STREAMS = 3 <br />CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: <br />TIME OF CONCENTRATION(MIN.) = 7.93 <br />RAINFALL INTENSITY(INCH/HR) = 1.74 <br />Page 5 <br />