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Shaw Environmental, Inc. <br />NORTH COUNTY RECYCLING CENTER AND SANITARY LANDFILL, MODULE 1 <br />CHECK OF EXISTING LEACHATE COLLECTION PIPES <br />USING THE IMPROVED PIPE LOADING CALCULATION <br />C. Ring Deflection <br />C <br />where, <br />Therefore, <br />S _ M s.. R <br />H E P fi <br />A,, = area of pipe wall/unit circumference of pipe, in'/in = t <br />0.226 in'/in <br />Initial Lona -Term <br />SH 0.3001 1.6371 <br />VAF 1.2472 0.7944 <br />Load, PT 106 psi 67 psi <br />Allowable ring deflection (AY/D,,,)„tto,,, = 3.88 % <br />Based on the modified Iowa deflection equation, the ring deflection ratio, <br />DY Ll <br />D,,, E,, .1 + 0.061M5 . R3 <br />Where: AY = vertical pipe deflection (in) <br />I = moment of inertia (in ) <br />t3 <br />1=- <br />12 <br />I = 0.0010 in'/in <br />Therefore, <br />N:\GEOTECHNICAL\NCRC&SL-2007\Pipe-Loadin,a\Module I&2\Modulel&2_31nchPipe_ImprovedMethod_148ft.xls Page 4 of 6 <br />Ring, Deflection <br />Note <br />Initial Lona -Term <br />AY/D,,, <br />3.52 2.40 <br />Ring Deflection is Acceptable <br />N:\GEOTECHNICAL\NCRC&SL-2007\Pipe-Loadin,a\Module I&2\Modulel&2_31nchPipe_ImprovedMethod_148ft.xls Page 4 of 6 <br />