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»»>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT) ««< <br />ELEVATION DATA: UPSTREAM(FEET) = 147.00 DOWNSTREAM(FEET) = 146.20 <br />FLOW LENGTH(FEET) = 175.00 MANNING'S N = 0.013 <br />ASSUME FULL -FLOWING PIPELINE <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 8.26 <br />PIPE FLOW VELOCITY = (TOTAL FLOW)/(PIPE CROSS SECTION AREA) <br />GIVEN PIPE DIAMETER(INCH) = 18.00 NUMBER OF PIPES = 1 <br />PIPE-FLOW(CFS) - 14.59 <br />PIPE TRAVEL TIME(MIN.) - 0.35 Tc(MIN.) - 6.12 <br />LONGEST FLOWPATH FROM NODE 300.00 TO NODE 320.00 = 526.00 FEET. <br />+ <br />+ <br />DA-C3 <br />---------------------------------------------------------------------------- <br />............................................................................ <br />FLOW PROCESS FROM NODE 320.00 TO NODE 320.00 IS CODE = <br />82 <br />»»>ADD SUBAREA RUNOFF TO MAINLINE, AT MAINLINE Tc, ««< <br />»»>(AND COMPUTE INITIAL SUBAREA RUNOFF) ««< <br />---------------------------------------------------------------------------- <br />INITIAL SUBAREA FLOW-LENGTH(FEET) = 160.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 154.50 DOWNSTREAM(FEET) = <br />152.50 <br />Tc - K*[(LENGTH" 3.00)/(ELEVATION CHANGE)]"0.20 <br />SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 5.561 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) = 5.822 <br />SUBAREA Tc AND LOSS RATE DATA(AMC II): <br />DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap <br />SCS Tc <br />LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) <br />CN (MIN.) <br />COMMERCIAL B 3.57 0.30 0.100 <br />56 5.56 <br />SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.30 <br />SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 <br />SUBAREA AREA(ACRES) = 3.57 INITIAL SUBAREA RUNOFF(CFS) = <br />18.61 <br />" ADD SUBAREA RUNOFF TO MAINLINE AT MAINLINE Tc: <br />MAINLINE Tc(MIN.) = 6.12 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) = 5.509 <br />SUBAREA AREA(ACRES) - 3.57 SUBAREA RUNOFF(CFS) - 17.60 <br />EFFECTIVE AREA(ACRES) - 6.43 AREA -AVERAGED Fm(INCH/HR) <br />- 0.03 <br />AREA -AVERAGED Fp(INCH/HR) = 0.30 AREA -AVERAGED Ap = 0.10 <br />TOTAL AREA(ACRES) = 6.4 PEAK FLOW RATE(CFS) = <br />31.71 <br />a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa <br />FLOW PROCESS FROM NODE 320.00 TO NODE 340.00 IS CODE = <br />91 <br />»»>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA««< <br />»»>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT) ««< <br />ELEVATION DATA: UPSTREAM(FEET) = 147.00 DOWNSTREAM(FEET) = 146.20 <br />FLOW LENGTH(FEET) = 175.00 MANNING'S N = 0.013 <br />ASSUME FULL -FLOWING PIPELINE <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 10.09 <br />PIPE FLOW VELOCITY = (TOTAL FLOW)/(PIPE CROSS SECTION AREA) <br />GIVEN PIPE DIAMETER(INCH) = 24.00 NUMBER OF PIPES = 1 <br />PIPE-FLOW(CFS) - 31.71 <br />PIPE TRAVEL TIME(MIN.) = 0.29 Tc(MIN.) = 6.41 <br />LONGEST FLOWPATH FROM NODE 300.00 TO NODE 340.00 = 701.00 FEET. <br />a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa <br />FLOW PROCESS FROM NODE 340.00 TO NODE 340.00 IS CODE = 1 <br />»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< <br />TOTAL NUMBER OF STREAMS = 2 <br />CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: <br />TIME OF CONCENTRATION(MIN.) = 6.41 <br />RAINFALL INTENSITY(INCH/HR) - 5.37 <br />AREA -AVERAGED Fm(INCH/HR) - 0.03 <br />AREA -AVERAGED Fp(INCH/HR) - 0.30 <br />3 <br />