Overburden Correction Factors for SPT in Sand

Abstract

Several formulae and charts have been published for correcting the results of the standard penetration test (SPT) performed in sands for the effects of overburden pressure. However, depending on which published correction factor is used, very different interpretations may result. This paper attempts to clarify and resolve some of these differences, and proposes a simple correction factor as a tentative standard, contingent on data from future research.