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AREA -AVERAGED Fp(INCH/HR) = 0.30 AREA -AVERAGED Ap = 0.10 <br />TOTAL AREA(ACRES) = 7.7 PEAK FLOW RATE(CFS) = 34.44 <br />++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ <br />FLOW PROCESS FROM NODE 150.00 TO NODE 160.00 IS CODE = 41 <br />---------------------------------------------------------------------------- <br />»»>COMPUTE PIPE -FLOW TRAVEL TIME THOU SUBAREA««< <br />»»>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT)««< <br />ELEVATION DATA: UPSTREAM(FEET) = 141.80 DOWNSTREAM(FEET) = 139.90 <br />FLOW LENGTH(FEET) = 372.00 MANNING'S N = 0.013 <br />ASSUME FULL -FLOWING PIPELINE <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 7.02 <br />PIPE FLOW VELOCITY = (TOTAL FLOW)/(PIPE CROSS SECTION AREA) <br />GIVEN PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 <br />PIPE-FLOW(CFS) = 34.44 <br />PIPE TRAVEL TIME(MIN.) = 0.88 Tc(MIN.) = 8.12 <br />LONGEST FLOWPATH FROM NODE 120.00 TO NODE 160.00 = 1276.00 FEET. <br />++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ <br />FLOW PROCESS FROM NODE 160.00 TO NODE 160.00 IS CODE = 1 <br />---------------------------------------------------------------------------- <br />»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< <br />»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< <br />TOTAL NUMBER OF STREAMS = 2 <br />CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: <br />TIME OF CONCENTRATION(MIN.) = 8.12 <br />RAINFALL INTENSITY(INCH/HR) = 4.69 <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) = 7.69 <br />TOTAL STREAM AREA(ACRES) = 7.69 <br />PEAK FLOW FATE(CFS) AT CONFLUENCE = 34.44 <br />** CONFLUENCE DATA ** <br />STREAM Q Tc Intensity Fp(Fm) Ap As HEADWATER <br />NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE <br />1 48.28 8.62 4.530 0.30( 0.03) 0.10 11.9 110.00 <br />2 34.44 8.12 4.686 0.30( 0.03) 0.10 7.7 120.00 <br />RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO <br />CONFLUENCE FORMULA USED FOR 2 STREAMS. <br />** PEAK FLOW RATE TABLE ** <br />STREAM Q Tc <br />Intensity <br />Fp(Fm) <br />Ap As HEADWATER <br />NUMBER (CFS) (MIN.) <br />(INCH/HR) <br />(INCH/HR) <br />(ACRES) <br />NODE <br />1 81.52 8.12 <br />4.686 <br />0.30( 0.03) <br />0.10 18.9 <br />120.00 <br />2 81.56 8.62 <br />4.530 <br />0.30( 0.03) <br />0.10 19.6 <br />110.00 <br />COMPUTED CONFLUENCE ESTIMATES <br />ARE AS FOLLOWS: <br />PEAK FLOW RATE(CFS) = <br />81.56 <br />Tc(MIN.) = <br />8.62 <br />EFFECTIVE AREA(ACRES) = <br />19.58 <br />AREA -AVERAGED <br />Fm(INCH/HR) = <br />0.03 <br />AREA -AVERAGED Fp(INCH/HR) <br />= 0.30 <br />AREA -AVERAGED <br />Ap = 0.10 <br />TOTAL AREA(ACRES) = <br />19.6 <br />LONGEST FLOWPATH FROM NODE <br />110.00 <br />TO NODE <br />160.00 = 2060.00 <br />FEET. <br />END OF STUDY SUMMARY: <br />TOTAL AREA(ACRES) = <br />19.6 <br />TC(MIN.) = <br />8.62 <br />EFFECTIVE AREA(ACRES) = <br />19.58 <br />AREA -AVERAGED <br />Fm(INCH/HR)= 0.03 <br />AREA -AVERAGED Fp(INCH/HR) <br />= 0.30 <br />AREA -AVERAGED <br />Ap = 0.100 <br />PEAK FLOW RATE(CFS) = <br />81.56 <br />