Laserfiche WebLink
MPD2.OUT <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 420.00 TO NODE 440.00 = 367.00 FEET. <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 440.00 TO NODE 440.00 IS CODE = 1 <br />---------------------------------------------------------------------------- <br />>>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< <br />---------------------------------------------------------------------------- <br />TOTAL NUMBER OF STREAMS = 4 <br />CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE: <br />TIME OF CONCENTRATION(MIN.) = 7.93 <br />RAINFALL INTENSITY(INCH/HR) = 1.74 <br />AREA -AVERAGED Fm(INCH/HR) = 0.03 <br />AREA -AVERAGED Fp(INCH/HR) = 0.30 <br />AREA -AVERAGED Ap = 0.10 <br />EFFECTIVE STREAM AREA(ACRES) = 0.56 <br />TOTAL STREAM AREA(ACRES) = 0.56 <br />PEAK FLOW RATE(CFS) AT CONFLUENCE = 0.86 <br />+ + <br />OF-D2 <br />+ + <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 430.00 TO NODE 431.00 IS CODE = 21 <br />---------------------------------------------------------------------------- <br />>>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< <br />>>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< <br />---------------------------------------------------------------------------- <br />INITIAL SUBAREA FLOW-LENGTH(FEET) 22.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 147.20 DOWNSTREAM(FEET) = 146.60 <br />Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]**0.20 <br />SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 5.000 <br />* 2 YEAR RAINFALL INTENSITY(INCH/HR) = 2.264 <br />SUBAREA Tc AND LOSS RATE DATA(AMC II): <br />DEVELOPMENT TYPE/ SCS SOIL AREA Fp <br />LAND USE GROUP (ACRES) (INCH/HR) <br />COMMERCIAL B 0.05 0.30 <br />SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = <br />SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 <br />SUBAREA RUNOFF(CFS) = 0.10 <br />TOTAL AREA(ACRES) = 0.05 PEAK FLOW RATE(CFS) <br />Page 6 <br />Ap SCS Tc <br />(DECIMAL) CN (MIN.) <br />0.100 56 5.00 <br />0.30 <br />