INFLUENCE OF HAMMER TYPE ON SPT RESULTS. DISCUSSION AND CLOSURE

A discussion of a paper with the aforementioned title by E.E. Drumright, C.W. Pfingsten, and R.G. Lukas, published in this journal (Volume 122, Number 7, July 1996), is presented. The discussers are strong proponents of the CME automatic hammer system, since it essentially eliminates the operator and a number of other potential sources of significant error in standard penetration testing (SPT), and recommend that other types of hammers and other hammer drop systems be retired in lieu of this automatic system. The discussers also caution against using SPT for geotechnical sampling in fine-grained soils, especially soft and very soft clays. Discussion is followed by closure from the authors.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Lutenegger, A J
  • Kelley, S P
• Publication Date: 1997-9

Language

• English

Media Info

• Features: Figures; Tables;
• Pagination: p. 890-891
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 123
  • Issue Number: 9
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Automatic control; Automation; Fine grained soils; Geological surveying; Geotechnical engineering; Hammers; Soft clays; Soil penetration test; Soils
• Old TRIS Terms: Soil exploration
• Subject Areas: Geotechnology; Highways; I41: General Soil Surveys;

Filing Info

• Accession Number: 00742141
• Record Type: Publication
• Contract Numbers: NA16CP-0220-01
• Files: TRIS
• Created Date: Oct 27 1997 12:00AM