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MEA100.RES <br />---------------------------------------------------------------------------- <br />----------------------------------------- <br />ELEVATION DATA: UPSTREAM(FEET) = 142.90 DOWNSTREAM(FEET) = 142.00 <br />FLOW LENGTH(FEET) = 306.00 MANNING'S N = 0.013 <br />ASSUME FULL -FLOWING PIPELINE <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 8.89 <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) = 27.91 <br />PIPE TRAVEL TIME(MIN.) = 0.57 Tc(MIN.) = 6.31 <br />LONGEST FLOWPATH FROM NODE 110.00 TO NODE 113.00 = 894.00 FEET. <br />+ + <br />EX-A3 <br />+ + <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 113.00 TO NODE 113.00 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) 144.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 153.70 DOWNSTREAM(FEET) = 151.30 <br />Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]**0.20 <br />SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = <br />5.033 <br />* 100 YEAR RAINFALL <br />INTENSITY(INCH/HR) = <br />6.164 <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 2.24 <br />0.30 <br />0.100 56 <br />5.03 <br />SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.30 <br />SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 <br />SUBAREA AREA(ACRES) = 2.24 INITIAL SUBAREA RUNOFF(CFS) = 12.37 <br />** ADD SUBAREA RUNOFF TO MAINLINE AT MAINLINE Tc: <br />MAINLINE Tc(MIN.) = 6.31 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) = 5.417 <br />SUBAREA AREA(ACRES) = 2.24 SUBAREA RUNOFF(CFS) = 10.86 <br />EFFECTIVE AREA(ACRES) = 7.69 AREA -AVERAGED Fm(INCH/HR) = 0.03 <br />AREA -AVERAGED Fp(INCH/HR) = 0.30 AREA -AVERAGED Ap = 0.10 <br />TOTAL AREA(ACRES) = 7.7 PEAK FLOW RATE(CFS) = 37.28 <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 113.00 TO NODE 114.00 IS CODE = 41 <br />---------------------------------------------------------------------------- <br />>>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< <br />Page 4 <br />