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Title: Evaluation of geotechnical property variability
Authors: Phoon, K.-K. 
Kulhawy, F.H.
Keywords: Friction angle
Geotechnical variability
In situ horizontal stress coefficient
Transformation uncertainty
Undrained shear strength
Young's modulus
Issue Date: Aug-1999
Citation: Phoon, K.-K.,Kulhawy, F.H. (1999-08). Evaluation of geotechnical property variability. Canadian Geotechnical Journal 36 (4) : 625-639. ScholarBank@NUS Repository.
Abstract: To evaluate geotechnical variability on a general basis that will facilitate the use of reliability-based design procedures, it is necessary to assess inherent soil variability, measurement error, and transformation uncertainty separately. The inherent variability and measurement error are addressed in a common paper, and transformation uncertainty is addressed herein. A second-moment probabilistic approach is applied to combine these uncertainties consistently based on the manner in which the design soil property is derived. The design properties considered in this paper are undrained shear strength, effective stress friction angle, in situ horizontal stress coefficient, and Young's modulus. This paper concludes with specific guidelines on the typical coefficients of variation for these common design soil properties as a function of the test type and the type of correlation used.
Source Title: Canadian Geotechnical Journal
ISSN: 00083674
Appears in Collections:Staff Publications

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