DFI Magazine September/October 2020 - 119
The Future
For projects where CSL is specified, but
where evaluation criteria are not explicitly
stated, the white paper is a publicly
available document from DFI to reference
in defining criteria and, therefore, in
evaluating CSL results on a more consistent
basis. Also, the paper offers guidance on
steps to be taken after the initial round of
CSL is provided.
The proposed thresholds are not
significantly different from those in the
CCRC, but the terminology has undergone a
relatively drastic change. While there were
some unintended consequences with the
CCRC terminology, which was a main
motivator for developing the paper, it might
become apparent that the new terminology
is not immune to unintended consequences
of its own. However, the paper is intended
to be a living document, and improvements
are envisioned as more experience is gained
and research is performed. The task force
intends to revisit the topic and looks
forward to feedback from industry members
who have implemented the new criteria.
The recommendations stem from the understanding that CSL
data should be used as a part of the shaft acceptance process,
and thus needs some form of classification to delineate
acceptable versus abnormal results.
Greg Canivan, P.E., is a technical principal at S&ME with over two decades of deep foundation experience. He
provides senior leadership to the company's deep foundation testing group. In addition to participating in
DFI's Testing and Evaluation Committee, he is active in various industry organizations, such as the Pile
Driving Contractors Association (PDCA).
Acceptable (green) to highly abnormal
(red) CSL test results, using new criteria
Anna Sellountou, Ph.D., P.E., is in charge of Pile Dynamics' international business development and technical
operations. In addition to participating in DFI's Testing and Evaluation Committee and chairing the CSL task force,
she is active in various engineering and testing organizations, such as ASTM and American Concrete Institute.
DEEP FOUNDATIONS * SEPT/OCT 2020 * 119
http://www.specrete.com/
DFI Magazine September/October 2020
Table of Contents for the Digital Edition of DFI Magazine September/October 2020
CONTENTS
CONTENTS 2
DFI Magazine September/October 2020 - Intro
DFI Magazine September/October 2020 - 1
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DFI Magazine September/October 2020 - CONTENTS
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