Subsurface Exploration using the Standard Penetration Test and the Cone Penetrometer Test
The Standard Penetration Test (SPT) and Cone Penetrometer Test (CPT) have become industry standards for subsurface geotechnical investigations using small diameter (< 8-in. [20-cm]) borings and soundings. Both procedures have evolved over a period of 100 and 70 years, respectively, and have been adopted as ASTM standards. Each procedure has certain advantages over the other, but both can elicit incorrect data under particular subsurface conditions that are often overlooked, depending on the experience of field personnel operating or logging the tests. This paper seeks to explain the operative assumptions employed in both procedures, highlight the various corrections that are commonly employed, and warn the reader of common errors in interpretation. The article concludes by stating that, under most conditions, the joint employment of SPT and CPT together has the greatest potential for characterizing sites correctly.
J. D. Rogers, "Subsurface Exploration using the Standard Penetration Test and the Cone Penetrometer Test," Environmental and Engineering Geoscience, vol. 12, no. 2, pp. 161-179, Association of Environmental and Engineering Geologists (AEG), May 2006.
The definitive version is available at http://dx.doi.org/10.2113/12.2.161
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
Cone penetrometer; Drilling; Site characterization; Site exploration; Standard penetration test; Subsurface exploration; Boring; Geotechnical engineering; Sounding apparatus; borehole logging; cone penetration test; error analysis; error correction; exploration; geotechnical survey
International Standard Serial Number (ISSN)
Article - Journal
© 2006 Association of Environmental and Engineering Geologists (AEG), All rights reserved.