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;7 <br />Ll <br />FIGURE 4 <br />ELASTIC SOLUTION DIFFERENTIAL SETTLEMENT MODEL (3) <br />Three-,imensional elastic solution model or sloping surface over a void. <br />2.0 <br />1.8 <br />c <br />o... <br />1.6 <br />v <br />c _ <br />• <br />r j <br />1.0 <br />3 <br />.0.6 <br />X c <br />0 0 <br />3 <br />0.4 <br />0� <br />0.0 <br />0.0 0.2 0.4 0.6 0.8 1.0 , J.2 <br />Ratio of Void Width to Contra8od. iliThiekne" (h/T) <br />Maximum tensile strain verses ratio of void:widtWfill thickness over 0.9m x <br />0.9m x 1.8m (3'x3'x6') void. <br />5.0 <br />li <br />O.O`O <br />1--_ O <br />5 $ S"JP= o <br />0.0 <br />0 5 10 15 20 Z5 30 35 40 <br />Containment liner Gude (degree) <br />Required fill thickness (T) to prevent grade reversal verses liner grade over <br />3'x'3'x6' void. <br />