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ERHIBIT IR <br />PARACHIIfE PIPELINE <br />SDBSIDENCE CALCIILATIONS <br />DORCHESIER COAL MINE <br />10.2' MODEL - R-70 GRADE <br />DISTANCE = 297.5 <br />DEFLECTION = 10.2 <br />PIPE O.D. = 8.625 <br />SHEAR AREA = .3897165 <br />q = 7543.238 <br />St = 3654.67 <br />W. T. _ .172 <br />PIPE I.D. = 8.281 <br />GRADE = 70000 <br />INTERNAL PSI = 1100 <br />I = .0019682 <br />MOMENT = 5879.449 <br />S bend max = 7454.982 <br />Z = 12.29165 <br />LENGTH STRAIN = .0016158 <br />LENGTH STRESS = 48475.32 <br />Sx max = 55930.3 <br />Se = 9403.074 <br />9403.074 < 50400 TRUE <br />36983.02 < 37800 TRUE <br />-817 <br />