SPT AND RELATIVE DENSITY IN COARSE SANDS

Experience at an inland waterways project at Rush Island, Missouri, wherein site fills were excavated by dredge and placed by hydraulic methods supports the contention that a simplified family of curves correlating Standard Penetration Test (SPT) N values, relative density, and overburden pressure for all cohesionless soils under all conditions is not valid. The parameters used to calculate relative density are so sensitive to individual sample characteristics that to test for compliance with a specified minimum relative density on actual contract work required that for a determination of a reliable relative density, a maximum and minimum density has to be determined for each in-place field density sample on the material actually recovered. For the analysis of results from the field verification at Rush Island the best correlation was between maximum dry density and D sub 60 with the coefficient of correlation (r equals 0.65) higher for coefficients of uniformity C sub U in excess of 2 than when all samples were considered.

  • Availability:
  • Supplemental Notes:
    • Discussion of Proceeding Paper 13350 by Wayne A. Bieganousky and William F. Marcusson, III, November, 1977.
  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  United States  10017-2398
  • Discussers:
    • Reitz, H M
  • Publication Date: 1978-9

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Subject/Index Terms

Filing Info

  • Accession Number: 00183219
  • Record Type: Publication
  • Report/Paper Numbers: ASCE 13999
  • Files: TRIS
  • Created Date: Nov 14 1978 12:00AM