A series of subsurface investigation including in-situ and laboratory tests has been carefully planned and carried out for the residential and commercial development over soft Silty Clay at Bukit Tinggi, Klang, Malaysia. The approach taken in characterizing and developing a fundamental understanding of the Klang Clay is described in this paper. Some important correlations have been established for key engineering properties from good quality field and laboratory data. A correlation between physical soil properties with undrained shear strength from field vane (s_(u(fv))) and laboratory consolidation tests are established for practical usages in the geo-technical design. In addition, correlations involving the piezocone were also systematically derived from high quality field data.
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