DFI Magazine September/October 2020 - 3

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Executive Director

Theresa Engler
tengler@dfi.org
Executive Editor

COVER STORY - 2020 OPA WINNER

16 Cast-in-Place Piles for Weak Soils
Lori A. Simpson, P.E., G.E., Serena T. Jang, P.E., G.E., and Matthew C. Pepin, P.E.
When the Chase Center sports and entertainment site was planned on poor ground
conditions of San Francisco's Bay Area, engineering and construction challenges needed
to be addressed while conducting a deep excavation for the four-block facility. Among
the solutions were using 1,000-plus augered cast-in-place piles with the total length of
piles identified on a case-by-case basis, using a tied-back cutoff wall along the entire site
perimeter, and constructing a stabilized working platform.

Barbra Rodriguez
mageditor@dfi.org
Managing Editor and
Advertising Manager

Karol Paltsios
magads@dfi.org
Graphic Design

Faye Klein
Staff Photographer

Herb Engler

DFI Executive Committee
President
Matthew Janes, P.Eng.
Vice President
Michael H. Wysockey, Ph.D., P.E.
Secretary
James O. Johnson
Treasurer
Gianfranco Di Cicco
Past President
Dan Brown, Ph.D., P.E., D.GE

Other Trustees
Peter Faust, Dipl.-Ing.
Conrad W. Felice, Ph.D., P.E.
Franz-Werner Gerressen, Dipl.-Ing.
Mike Kelley
K.S. Rama Krishna, Ph.D.
Anne Lemnitzer, Ph.D., P.E.
J. Erik Loehr, Ph.D., P.E.
Dan MacLean, P.E.
Matthew E. Meyer, P.E.
Morgan NeSmith, P.E.
David Paul, P.E.
Howard Perko, Ph.D., P.E.
Thomas D. Richards, P.E., D.GE
Lori Simpson, P.E., G.E.
Martin G. Taube, P.E., P.G.
Stefano Valagussa

87 Dr. Prasad Yenumula Brings Enthusiasm
and Energy to Every Task
93 Lateral Loading of Rock-Socketed Piles
Anne Lemnitzer, Ph.D., P.E., Rabie Farrag and Benjamin Turner, Ph.D., P.E., G.E.
Is the amplified shear in rock sockets predicted by the p-y method a real design concern?
A full-scale experimental program
in which piles were designed to
fail in shear on the basis of p-y
calculations provides insight
into this long-standing
dillema. By testing specimens that only varied in
their transverse reinforcements,
the authors show that the
response of piles is dominated by bending, not shear,
and that no damage occurs
within the rock socket.
DEEP FOUNDATIONS * SEPT/OCT 2020 * 3



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
DFI Magazine September/October 2020 - 2
DFI Magazine September/October 2020 - CONTENTS
DFI Magazine September/October 2020 - 4
DFI Magazine September/October 2020 - CONTENTS 2
DFI Magazine September/October 2020 - 6
DFI Magazine September/October 2020 - 7
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