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    Question

    The ISSS classification system categorizes “coarse

    sand” as:
    A 0.02–0.2 mm Correct Answer Incorrect Answer
    B 0.2–2.0 mm Correct Answer Incorrect Answer
    C 0.05–0.10 mm Correct Answer Incorrect Answer
    D 1.00–2.00 mm Correct Answer Incorrect Answer
    E <0.002 mm Correct Answer Incorrect Answer

    Solution

    ISSS defines coarse sand as 0.2–2.0 mm. USDA’s “coarse sand” is 0.5–1.0 mm.

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