DFI Magazine September/October 2020 - 5

C O N T E N T S FEATURES

Departments

101 Panel on Soil Improvement by Rigid Inclusions

PRESIDENT'S MESSAGE

Moderator: José Clemente, Ph.D., P.E., D.GE
Rigid inclusions (RIs) can improve foundations
by reducing settlement, causing densification of
granular soils and more, including their use to
carry concentrated loads under footings similar
to piles. However, some deep foundation
experts are less familiar with RIs. This article
by DFI and ASCE members of a February
panel recaps RI design and behavior related to
topics such as stress distribution, liquefaction
mitigation, seismic loading and steel
reinforcement of RIs when this is warranted.

Communicating Amidst Adversity . . . . 7
EXECUTIVE DIRECTOR UPDATE

DFI45 - People, Purpose, Passion. That's
DFI! . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DFI ACTIVITIES

DFI45 Annual Conference program, DFI's
2020 Distinguished Service Award winner,
new ITS Money webinars, DFI of India
2020 virtual webinars and conference,
2021 event updates, DFI Journal facelift
and more. . . . . . . . . . . . . . . . . . . . . . . 25
REGIONAL REPORT

DFI of India . . . . . . . . . . . . . . . . . . . . . 71
EDUCATIONAL TRUST REPORT

At-large scholarship winners, Condon
scholarship recipient, Women in Deep
Foundations Professional Development
Grants awarded. . . . . . . . . . . . . . . . . . 75
TECHNICAL ACTIVITIES UPDATE

New committee chairs, updates from the
Energy Foundations and Women in Deep
Foundations committees, and a recap of
Virtual S3 . . . . . . . . . . . . . . . . . . . . . . . 79
LEGALLY SPEAKING

Change Principles and Compensation for
COVID Impacts . . . . . . . . . . . . . . . . . 121
GUEST EDITORIAL

Incentives for Going Geothermal . . . . 125

107 Diaphragm Walls for Suez Canal Tunnel
Giuseppe Lui and Federico Fanti
As part of expansion projects, a double
road tunnel was developed underneath the
Suez Canal to provide an alternative
connection for the Nile Delta and Sinai
Peninsula besides ferries. This article
discusses the northernmost road tunnel
development. The work involved
execution of diaphragm walls for a tunnel
boring machine's launching and retrieval
shafts and of cut and cover approach
ramps. Diaphragm walls were also used to
execute plastic concrete blocks for soil
improvement of break-in and break-out
blocks, and for road tunnel cross passages.

DFI PEOPLE AND COMPANIES

News about people, companies and
products . . . . . . . . . . . . . . . . . . . . . . 129
CALENDAR & AD INDEX . . . . . . . . 134

115 Improving Crosshole Sonic
Logging Interpretations
Greg Canivan, P.E., and Anna Sellountou,
Ph.D., P.E.

DEEP FOUNDATIONS
The Magazine of the Deep Foundations
Institute (DFI) is published bimonthly
by DFI.
326 Lafayette Avenue
Hawthorne, NJ 07506, USA
T: +1 (973) 423-4030 | F: +1 (973) 423-4031
Email: staff@dfi.org

To foster greater consistency in
interpretation of crosshole sonic logging
(CSL) results obtained from cast-in-place
foundations, a DFI task force was formed
to review existing approaches. This
summary covers the white paper released
by the Testing and Evaluation Committee
task force last fall. It includes a review of
the state of CSL practice, a proposal for
improved CSL rating criteria and a
discussion of proper interpretation of CSL
test results.
DEEP FOUNDATIONS * SEPT/OCT 2020 * 5
DFI Magazine September/October 2020

Table of Contents for the Digital Edition of DFI Magazine September/October 2020
