A QUALITY AND SAFETY ISSUE FOR CAST-IN-PLACE PILES - 25 YEARS OF EXPERIENCE WITH LOW-STRAIN INTEGRITY TESTING IN GERMANY: FROM SCIENTIFIC PECULIARITY TO DAY-TO-DAY PRACTICE. IN: CURRENT PRACTICES AND FUTURE TRENDS IN DEEP FOUNDATIONS

The German Committee for Dynamic Pile Testing (subcommittee of the Piling committee of the German Geotechnical Society - DGGT) reviewed the experience of its members with low-strain pile integrity testing. This review shows that about 2% of all cast-in-place concrete piles carried out in Germany have been tested and that signals of approximately 15% of the tested piles show a deviation from the ideal signal. Further evaluation revealed that only 5% of the tested piles had to be denominated as defective in the report and only 1% were subject to remedial measures. German experience and especially the assessment of piles according to the classification system as proposed in the "Recommendations for Dynamic Pile Testing" by the DGGT is described. Statistical data as well as illustrative case studies are given. The case studies comprise integrity test results in comparison with excavated piles and coring. The paper states the best practices and the fields of application of the low-strain integrity test method as well as shortcomings of the method when applied to certain pile systems.

• Record URL:
  https://doi.org/10.1061/40743(142)12
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0784407436
• Corporate Authors:

  American Society of Civil Engineers

  Geo-Institute
  Reston, VA  United States  20191-4400
• Authors:
  • Klingmuller, O
  • Kirsch, F
• Conference:
  • Contributions in Honor of George G. Gobel
  • Location: Los Angeles California, United States
  • Date: 2004-7-27 to 2004-7-31
• Publication Date: 2004-7

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 202-221
• Monograph Title: CURRENT PRACTICES AND FUTURE TRENDS IN DEEP FOUNDATIONS
• Serial:
  • ASCE Geotechnical Special Publication
  • Issue Number: 125
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Case studies; Cast in place structures; Cracking; Flaw detection; Foundations; Fracture properties; Precast concrete; Quality control; Support piles; Testing
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00987890
• Record Type: Publication
• ISBN: 9780784407431
• Files: TRIS
• Created Date: Mar 10 2005 12:00AM