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• Table 9. Gradation for Granular Bedding <br />U.S. Standard Percent By Weight Passing Square Mesh Sieves <br />Sieve Size Type I Type II <br />3" - 90 - 100 <br />1-1/2" - - <br />3/4" - 20 - 90 <br />3/8" 100 - <br />*4 95 - 100 0 - 20 <br />X16 45 - 80 - <br />~'S0 10 - 30 - <br />~100 2 - 10 - <br />X200 0- 2 0- 3 <br />• <br /> <br />