The back fill material for a vibroflotation project has the following grain sizes. D10 0.11mm D20 0.20mm D50 1.3mm D25 D75 0.60 1.60 35. Determine the suitability number. a. 19.3 b. 18.0 C. 17.8 d. 20.4 36. Calculate the sorting coefficient. a. 1.581 b. 2.798 c. 1.633 d. 3.546

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