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0 <br />K] <br />Shaw Environmental, Inc. <br />NORTH COUNTY RECYCLING CENTER AND SANITARY LANDFILL, MODULE 4 <br />CHECK OF EXISTING LEACHATE COLLECTION PIPES <br />USING THE IMPROVED PIPE LOADING CALCULATION <br />where, <br />Therefore, <br />C. Ring Deflection <br />SM _ tVl ti.. R <br />A,, = area of pipe wall/unit circumference of pipe, int/in = t <br />0.29 in'/in <br />Initial Lona -Term <br />SH 0.4992 2.7229 <br />VAF 1.1457 0.6258 <br />Load, PT 178 psi 97 psi <br />Allowable ring deflection (AY/D)�it�w. = 3.88 <br />Based on the modified Iowa deflection equation, the ring deflection ratio, <br />AY <br />D Ell .I+0.06IMS .R' <br />Where: AY = vertical pipe deflection (in) <br />I = moment of inertia (in ) <br />t' <br />12 <br />I = 0.0020 in4/in <br />Therefore, <br />N:\GEOTECHNICAL\NCRC&SL-2007\Pipe-Loadin-\Module4\Module4_41nchPipe_ImprovedMethod_241ft.xls Page 4 of 6 <br />Ring Deflection <br />Note <br />Initial Long -Term <br />M M <br />AY/D,, <br />2.80 1.59 <br />Ring Deflection is Acceptable <br />N:\GEOTECHNICAL\NCRC&SL-2007\Pipe-Loadin-\Module4\Module4_41nchPipe_ImprovedMethod_241ft.xls Page 4 of 6 <br />