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MEA100.RES <br />** ADD SUBAREA RUNOFF TO MAINLINE AT MAINLINE Tc: <br />MAINLINE Tc(MIN.) = 5.04 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) = 6.159 <br />SUBAREA AREA(ACRES) = 0.70 SUBAREA RUNOFF(CFS) = 3.86 <br />EFFECTIVE AREA(ACRES) = 2.68 AREA -AVERAGED Fm(INCH/HR) = 0.03 <br />AREA -AVERAGED Fp(INCH/HR) = 0.30 AREA -AVERAGED Ap = 0.10 <br />TOTAL AREA(ACRES) = 2.7 PEAK FLOW RATE(CFS) = 14.78 <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 122.00 TO NODE 123.00 IS CODE = 41 <br />>>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< <br />>>>>>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT)<<<<< <br />---------------------------------------------------------------------------- <br />----------------------------------------- <br />ELEVATION DATA: UPSTREAM(FEET) = 147.00 DOWNSTREAM(FEET) = 145.00 <br />FLOW LENGTH(FEET) = 154.00 MANNING'S N = 0.013 <br />ASSUME FULL -FLOWING PIPELINE <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 8.37 <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) = 14.78 <br />PIPE TRAVEL TIME(MIN.) = 0.31 Tc(MIN.) = 5.35 <br />LONGEST FLOWPATH FROM NODE 120.00 TO NODE 123.00 = 288.00 FEET. <br />+ + <br />EX-A8 <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 123.00 TO NODE 123.00 IS CODE = 82 <br />---------------------------------------------------------------------------- <br />>>>>>ADD SUBAREA RUNOFF TO MAINLINE, AT MAINLINE Tc,<<<<< <br />>>>>>(AND COMPUTE INITIAL SUBAREA RUNOFF)<<<<< <br />---------------------------------------------------------------------------- <br />INITIAL SUBAREA FLOW-LENGTH(FEET) 107.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 154.00 DOWNSTREAM(FEET) = 153.00 <br />Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]**0.20 <br />SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 5.018 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) = 6.175 <br />SUBAREA Tc AND LOSS RATE DATA(AMC II): <br />DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap <br />LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) <br />COMMERCIAL B 1.15 0.30 0.100 <br />SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.30 <br />SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 <br />SUBAREA AREA(ACRES) = 1.15 INITIAL SUBAREA RUNOFF(CFS) _ <br />Page 8 <br />SCS Tc <br />CN (MIN.) <br />56 5.02 <br />6.36 <br />