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MPA2.OUT <br />>>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< <br />>>>>>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT)<<<<< <br />------------------------------------------------------------- <br />-------------------------- <br />ELEVATION DATA: UPSTREAM(FEET) = 139.10 DOWNSTREAM(FEET) <br />FLOW LENGTH(FEET) = 255.00 MANNING'S N = 0.013 <br />DEPTH OF FLOW IN 30.0 INCH PIPE IS 12.5 INCHES <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 6.47 <br />GIVEN PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 <br />PIPE-FLOW(CFS) = 12.50 <br />PIPE TRAVEL TIME(MIN.) = 0.66 Tc(MIN.) = 11.90 <br />LONGEST FLOWPATH FROM NODE 110.00 TO NODE 115.00 = <br />-------------- <br />= 137.20 <br />2027.00 FEET. <br />+ + <br />DA-Al <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 115.00 TO NODE 115.00 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) 160.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 158.90 DOWNSTREAM(FEET) = 155.70 <br />Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]**0.20 <br />SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 5.062 <br />* 2 YEAR RAINFALL INTENSITY(INCH/HR) = 2.248 <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 2.29 0.30 0.100 <br />56 5.06 <br />SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.30 <br />SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 <br />SUBAREA AREA(ACRES) = 2.29 INITIAL SUBAREA RUNOFF(CFS) = <br />4.57 <br />** ADD SUBAREA RUNOFF TO MAINLINE AT MAINLINE Tc: <br />MAINLINE Tc(MIN.) = 11.90 <br />* 2 YEAR RAINFALL INTENSITY(INCH/HR) = 1.376 <br />SUBAREA AREA(ACRES) = 2.29 SUBAREA RUNOFF(CFS) = 2.77 <br />EFFECTIVE AREA(ACRES) = 11.89 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) = 11.9 PEAK FLOW RATE(CFS) = <br />14.40 <br />FLOW PROCESS FROM NODE 115.00 TO NODE 160.00 IS CODE = 41 <br />Page 6 <br />