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MPB2.OUT <br />TOTAL AREA(ACRES) = 1.00 PEAK FLOW RATE(CFS) = 1.61 <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 221.00 TO NODE 260.00 IS CODE = 61 <br />>>>>>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA<<<<< <br />>>>>>(STANDARD CURB SECTION USED)<<<<< <br />---------------------------------------------------------------------------- <br />--------- <br />UPSTREAM ELEVATION(FEET) = 154.50 DOWNSTREAM ELEVATION(FEET) = 144.30 <br />STREET LENGTH(FEET) = 390.00 CURB HEIGHT(INCHES) = 6.0 <br />STREET HALFWIDTH(FEET) = 16.00 <br />DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 8.00 <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) = 3.79 <br />STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: <br />STREET FLOW DEPTH(FEET) = 0.31 <br />HALFSTREET FLOOD WIDTH(FEET) = 9.09 <br />AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.01 <br />PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 1.24 <br />STREET FLOW TRAVEL TIME(MIN.) = 1.62 Tc(MIN.) = 8.65 <br />* 2 YEAR RAINFALL INTENSITY(INCH/HR) = 1.653 <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 2.99 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) = 2.99 SUBAREA RUNOFF(CFS) = 4.37 <br />EFFECTIVE AREA(ACRES) = 3.99 AREA -AVERAGED Fm(INCH/HR) = 0.04 <br />AREA -AVERAGED Fp(INCH/HR) = 0.30 AREA -AVERAGED Ap = 0.14 <br />TOTAL AREA(ACRES) = 4.0 PEAK FLOW RATE(CFS) = 5.79 <br />END OF SUBAREA STREET FLOW HYDRAULICS: <br />DEPTH(FEET) = 0.35 HALFSTREET FLOOD WIDTH(FEET) = 10.97 <br />FLOW VELOCITY(FEET/SEC.) = 4.38 DEPTH*VELOCITY(FT*FT/SEC.) = 1.51 <br />LONGEST FLOWPATH FROM NODE 220.00 TO NODE 260.00 = 590.00 FEET. <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 260.00 TO NODE 260.00 IS CODE = 1 <br />---------------------------------------------------------------------------- <br />>>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< <br />Page 6 <br />