Member $99.00 | Non-Member $159.00
INSTRUCTOR: Garland Likins, P.E., M.ASCE
Sponsored by ASCE Continuing Education and the Geo-Institute (G-I).
Purpose and Background
Many engineers are forced to use deep foundations due to prevailing poor soil conditions. Driven piles may be damaged during installation. Cast-in-place foundations installed by drilling, such as drilled shafts or augercast piles, often result in questions about their structural integrity. Studies as well as failed static tests reveal a significant percentage of cast-in-place foundation shafts with defects that are of concern. Various non destructive testing (NDT) inspection methods are available to assess the evaluation of structural integrity. A review of several commonly used techniques will be covered including their operating principles and testing preparation requirements. The applications will be illustrated by several case histories, demonstrating their strengths and effectiveness, but also their limitations. Applications will include assessing unknown foundations.
Learning Outcomes
Learners will be able to:
- Assess the integrity of driven piles and drilled deep foundations
- Apply the methods that are most applicable to drilled shafts and augercast piles
- Discuss both the requirements for the testing and their limitations
Webinar Benefits
- Understand the principles underlying various integrity assessment options
- Learn the foundation preparation requirements for the testing
- Understand interpretation of the basic measurements obtained
- Find out about advanced analysis methods
Intended Audience
Civil engineers seeking to understand various options available to assess the quality of foundations either recently installed or existing structures will benefit from this webinar. This webinar is intended for both private and public sector engineers who design or specify deep foundations.
Webinar Outline
- Discuss the need for testing
- Review testing by available pile accessibility
- Discuss High Strain Integrity Testing (for driven piles)
- Present Low Strain Integrity Testing (Pulse Echo, Shape estimation)
- Review Crosshole Sonic Logging and Single Hole Sonic logging
- Discuss Thermal Integrity Profiling
- Present Pile Installation Testing for augercast piles
- Discuss Parallel Seismic and Parallel Inductive testing