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  1. Sebast_U_1973

    ASTM D5084 Test Method B - Falling Head Permeability-constant tailwater elevation

    Is there a time constraint on the test method ? We are reviewing the results from tests performed by Others and some time periods, say less than 10 min. to complete the test once the specimen is fully saturated seems an error ? Any insight is greatly appreciated. Thanks, Sebast1973
  2. Sebast_U_1973

    Soil Grain size distribution

    What logical assumptions could one make with comparing the D80 grain size (Soil having > percentage finer than this size vs. a soil with the D60 grain size being more dominant ? Usually Sieve Analysis and material gradations reference the D60 particle size and the D10 particle size in order to...
  3. Sebast_U_1973

    Grain Size Distribution and Soil Classification

    D60 - D10 are common parameters to work with from a Grain Size Distribution. I am on a project which specifies a D80-D30 classification of the particle size. What use would the D80-D30 have over the D60-D10 ? Or has anyone come across this grain size distribution before ? The project involves...
  4. Sebast_U_1973

    Soils Grain Size Distribution

    D60 - D10 are common parameters to work with from a Grain Size Distribution. I am on a project which specifies a D80-D30 classification of the particle size. What use would the D80-D30 have over the D60-D10 ? Or has anyone come across this grain size distribution before ? The project...

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