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  1. RiskTaker

    Confining Pressures of Soils

    We have a hole that had to be excavated ~20 to 30 feet below the groundwater table and we are in the process of backfilling hole with a sandy material. The hole had to be dewatered to perform these activities. Will the confining pressure of the soil (~90 feet (~60 feet higher than ground water...
  2. RiskTaker

    Field Classification of of Soils with < 25% Fines

    I agree. With that density, liquefication should not take place. But here in Texas the clays I have came across have a possibility of shrink/swell when water is added.
  3. RiskTaker

    Field Classification of of Soils with < 25% Fines

    Could frost heave be the concern with the SC material?
  4. RiskTaker

    Field Classification of of Soils with < 25% Fines

    The SC soils will not necessarily liquefy but with the water table coming up during a seismic event, and clays are highly sensitive to moisture. Would they not be affected by the sudden increase in moisture content. Are the soils undisturbed or are they disturbed and placed as Fill?

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