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Jun 13 2011 12:42PM Lewis Engineering 510.601.7206 <br />1000 YEAR RAINFALL INTENSITY(INCH/HR) = 2.599 <br />:OIL CLASSIFICATION IS "C" <br />_..AATURAL OR AGRICULTURE SUBAREA LOSS RATE, Fm(INCH/HR) = .2500 <br />SUBAREA AREA(ACRES) = 10.99 SUBAREA RUNOFF(CFS) = 23.23 <br />EFFECTIVE AREA(ACRES) = 41.81 AVERAGED Fm(INCH/HR) <br />'DOTAL AREA(AcRw) = 41.81 <br />PEAK FLOW RATE(CFS) = 93.92 <br />TC(MIN.) = 18.11 <br />FLOW PROCESS FROM NODE 1.03 TO NODE 1_04 IS CODE = 9 <br />- ---- ----------------------------------------- <br />»»>COMPUTE "V" GUTTER FLOW TRAVEL TIME THRU SUBAREA««< <br />UPSTREAM NOD, ELEVATION(FEET) = 56.00 <br />DOWNSTREAM NODE ELEVATION(FEET) = 48.00 <br />CHANNEL LENGTH THRU SUBAREA(FEET) = 1500.00 <br />"V" GUTTER WIDTH(FEET) = .00 GUTTER HIKE(FEET) _ <br />.001 <br />PAVEMENT LIP(FEET) = -001 MANNING'S. N = _0150 <br />PAVEMENT CROSSFALL(DECIMAL NOTATION) _ .50004 <br />MAXIMUM DEPTH(FEET) - 5.00 <br />1000 YEAR RAINFALL INTENSITY(INCH/HR) = 2.396 <br />*USER SPECIFIED(SUBAREA): <br />NATURAL OR AGRICULTURE SUBAREA LOSS RATE, Fm(INCH/HR) <br />= _0500 <br />TRAVEL TIME THRU SUBAREA BASED ON VELOCITY (FEET /SEC.) <br />= 7.98 <br />AVERAGE FLOW DEPTH(FEET) = 2_59 FLOOD WIDTH(FEET) <br />= 10.35 <br />"V" GUTTER FLOW TRAVEL TIME(MIN-) 3.13 TC(MIN.) <br />= 21.25 <br />SUBAREA AREA(ACRES) = 12.15 SUBAREA RUNOFF(CFS) = <br />25.65 <br />EFFECTIVE AREA(ACRES) - 53.96 AVERAGED Fm(INCH/Fiat) <br />_ .09 <br />i'OfiAL AREA(ACRES) = 53.96 PEAK FLOW RATE(CFS) = <br />311.95 <br />,...END OF SUBAREA "V" GUTTER HYDRAULICS- <br />DEPTH(FEET) = 2.63 FLOOD WIDTH(FEET) = 10.50 <br />FLOW VELOCITY(FEET{SEC.) a 8.12 DEPTH*VELOCITY = <br />21.33 <br />FLOW PROCESS FROM NODE 1.03 TO NODE 1.04 IS CODE = 1 <br />-------------------------------------------------- <br />»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< <br />TOTAL NUMBER OF STREAMS - 2 <br />CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: <br />TIME OF CONCENTRATION MIN.) = 21.25 <br />RAINFALL INTENSITY(INCH/HR) = 2.40 <br />AVERAGED Fm(INCHjHR) = .09 <br />EFFECTIVE STREAM AREA(ACRES) a 53.96 <br />TOTAL STREAM AREA(ACREs) = 53.96 <br />PEAK FLOW RATE(CIS) AT CONFLUENCE = 111.95 <br />*******4r##**+4********************** *****fit*}tit****'************** <br />FLOW PROCESS .FROM NODE 1.20 TO NODE ---- <br />1_ - <br />11IS-CODE- -- 2--- <br />»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<«« - ------ <br />�a==eKcomocaaemco=�==a-am�sac-._--a==-===mzx-_==c <br />NATURAL AVERAGE COVER <br />TC - K*[(LENGTH** 3.00)/(ELEVATION CNANGE)J** .20 <br />INITIAL SUBAREA FLOW-LENGTH(FEET) - 800.00 <br />UPSTREAM ELEVATION(FEET) = 165.00 <br />p.6 <br />