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MEA2.OUT <br />>>>>>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT)<<<<< <br />---------------------------------------------------------------------------- <br />----------------------------------------- <br />ELEVATION DATA: UPSTREAM(FEET) = 139.10 DOWNSTREAM(FEET) = 138.90 <br />FLOW LENGTH(FEET) = 152.00 MANNING'S N = 0.013 <br />DEPTH OF FLOW IN 30.0 INCH PIPE IS 20.2 INCHES <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 3.28 <br />GIVEN PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 <br />PIPE-FLOW(CFS) = 11.55 <br />PIPE TRAVEL TIME(MIN.) = 0.77 Tc(MIN.) = 12.13 <br />LONGEST FLOWPATH FROM NODE 110.00 TO NODE 150.00 = 1924.00 FEET. <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 150.00 TO NODE 150.00 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 />= 12.13 <br />RAINFALL INTENSITY(INCH/HR) <br />= 1.36 <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 />= 9.00 <br />TOTAL STREAM AREA(ACRES) = <br />9.00 <br />PEAK FLOW RATE(CFS) AT CONFLUENCE = 11.55 <br />+ + <br />EX-A7 <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.) = <br />5.000 <br />* 2 YEAR RAINFALL <br />INTENSITY(INCH/HR) = <br />2.264 <br />SUBAREA Tc AND LOSS <br />RATE DATA(AMC II): <br />DEVELOPMENT TYPE/ <br />SCS SOIL AREA <br />Fp <br />Ap SCS <br />Tc <br />LAND USE <br />GROUP (ACRES) <br />(INCH/HR) <br />(DECIMAL) CN <br />(MIN.) <br />COMMERCIAL <br />B 1.98 <br />0.30 <br />0.100 56 <br />5.00 <br />Page 6 <br />