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MPA2.OUT <br />>>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< <br />>>>>>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT)<<<<< <br />------------------------------------------------------------- <br />-------------------------- <br />ELEVATION DATA: UPSTREAM(FEET) = 137.20 DOWNSTREAM(FEET) <br />FLOW LENGTH(FEET) = 33.00 MANNING'S N = 0.013 <br />DEPTH OF FLOW IN 30.0 INCH PIPE IS 9.8 INCHES <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 10.32 <br />GIVEN PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 <br />PIPE-FLOW(CFS) = 14.40 <br />PIPE TRAVEL TIME(MIN.) = 0.05 Tc(MIN.) = 11.96 <br />LONGEST FLOWPATH FROM NODE 110.00 TO NODE 160.00 = <br />-------------- <br />= 136.40 <br />2060.00 FEET. <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 160.00 TO NODE 160.00 IS CODE = 1 <br />---------------------------------------------------------------------------- <br />>>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< <br />----------------------------------------------------- <br />TOTAL NUMBER OF STREAMS = 2 <br />CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: <br />TIME OF CONCENTRATION(MIN.) <br />= 11.96 <br />RAINFALL INTENSITY(INCH/HR) <br />= 1.37 <br />AREA -AVERAGED Fm(INCH/HR) = <br />0.03 <br />AREA -AVERAGED Fp(INCH/HR) = <br />0.30 <br />AREA -AVERAGED Ap = 0.10 <br />EFFECTIVE STREAM AREA(ACRES) <br />= 11.89 <br />TOTAL STREAM AREA(ACRES) = <br />11.89 <br />PEAK FLOW RATE(CFS) AT CONFLUENCE = 14.40 <br />+ + <br />DA-A7 <br />+ + <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 120.00 TO NODE 121.00 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) 100.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 156.50 DOWNSTREAM(FEET) = 154.50 <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 Ap SCS Tc <br />LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN (MIN.) <br />Page 7 <br />