oa Civil Engineering = Siviele Ingenieurswese - Variance of geotechnical properties and implications for the selection of design values : geotechnical engineering
Published results of investigations of variance in geotechnics are understandably scarce. The first study on soil variability was undertaken by Lump (1966), and only in the late 1990s was there renewed investigation. A seminal study was undertaken by Phoon and Kulhawy (1999), which investigated the variances of each parameter in terms of the coefficient of variance (CoV) for various techniques, such as triaxial testing, cone penetration testing (CPT) and standard penetration testing (SPT).
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