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" PEAK FLOW RATE TABLE " <br />STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER <br />NUMBER (CIS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE <br />1 43.47 6.41 5.365 0.30( 0.03) 0.10 8.8 300.00 <br />2 42.45 6.94 5.128 0.30( 0.03) 0.10 8.9 330.00 <br />COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: <br />PEAK FLOW RATE(CFS) - 43.47 Tc(MIN.) - 6.41 <br />EFFECTIVE AREA(ACRES) = 8.76 AREA -AVERAGED Fm(INCH/HR) = 0.03 <br />AREA -AVERAGED Fp(INCH/HR) = 0.30 AREA -AVERAGED Ap = 0.10 <br />TOTAL AREA(ACRES) = 8.9 <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 350.00 IS CODE = 91 <br />»»>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA««< <br />»»>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT) ««< <br />ELEVATION DATA: UPSTREAM(FEET) = 145.30 DOWNSTREAM(FEET) = 145.00 <br />FLOW LENGTH(FEET) = 70.00 MANNING'S N = 0.013 <br />ASSUME FULL -FLOWING PIPELINE <br />PIPE -FLOW VELOCITY(FEET/SEC.) - 13.84 <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) - 43.47 <br />PIPE TRAVEL TIME(MIN.) = 0.08 Tc(MIN.) = 6.50 <br />LONGEST FLOWPATH FROM NODE 300.00 TO NODE 350.00 = 771.00 FEET. <br />+ + <br />DA-05 <br />---------------------------------------------------------------------------- <br />............................................................................ <br />FLOW PROCESS FROM NODE 350.00 TO NODE 350.00 IS CODE - 82 <br />»»>ADD SUBAREA RUNOFF TO MAINLINE, AT MAINLINE Tc, ««< <br />»»>(AND COMPUTE INITIAL SUBAREA RUNOFF) ««< <br />---------------------------------------------------------------------------- <br />INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 157.00 DOWNSTREAM(FEET) = <br />155.00 <br />Tc - K*[(LENGTH" 3.00)/(ELEVATION CHANGE)]"0.20 <br />SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 5.000 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) = 6.187 <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 3.53 0.30 0.100 <br />56 5.00 <br />SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.30 <br />SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 <br />SUBAREA AREA(ACRES) - 3.53 INITIAL SUBAREA RUNOFF(CFS) - <br />19.56 <br />" ADD SUBAREA RUNOFF TO MAINLINE AT MAINLINE Tc: <br />MAINLINE Tc(MIN.) - 6.50 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) - 5.325 <br />SUBAREA AREA(ACRES) - 3.53 SUBAREA RUNOFF(CFS) - 16.82 <br />EFFECTIVE AREA(ACRES) = 12.29 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) - 12.5 PEAK FLOW RATE(CFS) - <br />58.56 <br />a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa <br />FLOW PROCESS FROM NODE 350.00 TO NODE 351.00 IS CODE - <br />91 <br />»»>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA««< <br />»»>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT) ««< <br />---------------------------------------------------------------------------- <br />ELEVATION DATA: UPSTREAM(FEET) = 145.00 DOWNSTREAM(FEET) = <br />143.80 <br />FLOW LENGTH(FEET) = 233.00 MANNING'S N = 0.013 <br />ASSUME FULL -FLOWING PIPELINE <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 18.64 <br />5 <br />