Dear collegues and students,
Information obtained from standard penetration tests (SPT) and cone penetration tests (CPT) can offer valuable insights into soil properties in geotechnical engineering. Researchers have developed correlations over time that allow us to estimate factors such as relative density, friction angle, and saturated unit weight for different types of soils based on normalized N70 values (Bowles, 1996) for sand and N60 values (Das, 2007) for cohesive soil. Alternatively, a range of formulae from various researchers (Meyerhof, 1957; Cubrinovski & Ishihara, 1999; Peck et al., 1974; Wolff, 1989; Schmertmann, 1975; Kulhawy & Mayne, 1990; Hatanaka & Uchida, 1996; Hara et al., 1971; Mayne & Kemper, 1988) can be employed to calculate these parameters.
Robertson (1990, 2005, 2016) has extensively studied methods for classifying soil behavior type using CPT data, enabling estimation of soil behavior based on normalized cone resistance and sleeve friction. Various formulae from researchers such as Kulhawy & Mayne (1990), Lancellotta (1983), Jamiolkowski et al. (1985), Ricceri et al. (2002), Mayne & Kemper (1988), and Anagnostopoulos et al. (2003) can assist in determining relative density, friction angle, and undrained shear strength for different types of soil based on measured cone resistance.
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#geotecnical
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#soilmechanicslaboratory
Vice President of Special Projects at Infrastructure Consulting and Engineering
2moCongratulations to both of you. Very bright futures ahead!