Geotechnical engineers worldwide practice variety of in-situ techniques to classify the soils in order to obtain the physical and engineering properties of soil. Electric piezocone, which is an advanced version of cone penetrometer, is capable of measuring cone resistance, sleeve friction and penetration pore pressure. The piezocone testing data not only provide valuable information on soil types but are also useful in deriving correlations with the engineering properties of soil for the purposes of analysis anddesign of foundations. In a view to establish a region-specific correlation between piezocone penetration resistance and soil properties, piezoconetests (CPTU), borings, and other in situ tests were carried out at seven locations of Jiangsu Province, East China. CPTU data were first used for classifying soil; thus the data were fully analyzed and validated for providing a reasonable soil classification. Several available CPT based classification charts are used to determine soil types; these results are furthervalidated with the soil classification determined from the field samples and basic soil test results. This paper summarizes this analysis results, including description of the available charts and their assessments of soil classification for reliable interpretation of soil types.
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