Laserfiche WebLink
MEA100.RES <br />EX -Al <br />+ + <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 140.00 TO NODE 141.00 IS CODE = 21 <br />---------------------------------------------------------------------------- <br />>>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< <br />>>USE TIME -OF -CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA<< <br />---------------------------------------------------------------------------- <br />INITIAL SUBAREA FLOW-LENGTH(FEET) 266.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 155.20 DOWNSTREAM(FEET) = 148.30 <br />Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]**0.20 <br />SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = <br />5.889 <br />* 100 YEAR RAINFALL <br />INTENSITY(INCH/HR) = <br />5.634 <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 3.54 <br />0.30 <br />0.100 56 <br />5.89 <br />SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.30 <br />SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 <br />SUBAREA RUNOFF(CFS) = 17.85 <br />TOTAL AREA(ACRES) = 3.54 PEAK FLOW RATE(CFS) = 17.85 <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 141.00 TO NODE 160.00 IS CODE = 41 <br />---------------------------------------------------------------------------- <br />>>>>>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA<<<<< <br />>>>>>USING USER -SPECIFIED PIPESIZE (EXISTING ELEMENT)<<<<< <br />---------------------------------------------------------------------------- <br />----------------------------------------- <br />ELEVATION DATA: UPSTREAM(FEET) = 142.00 DOWNSTREAM(FEET) = 137.20 <br />FLOW LENGTH(FEET) = 809.00 MANNING'S N = 0.013 <br />ASSUME FULL -FLOWING PIPELINE <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 5.68 <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) = 17.85 <br />PIPE TRAVEL TIME(MIN.) = 2.37 Tc(MIN.) = 8.26 <br />LONGEST FLOWPATH FROM NODE 140.00 TO NODE 160.00 = 1075.00 FEET. <br />**************************************************************************** <br />FLOW PROCESS FROM NODE 160.00 TO NODE 160.00 IS CODE = 1 <br />---------------------------------------------------------------------------- <br />>>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< <br />>>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< <br />---------------------------------------------------------------------------- <br />TOTAL NUMBER OF STREAMS = 2 <br />Page 12 <br />