January/February 2021 - 66

Slurry Wall
Chair: Giovanni Bonita, Ph.D., P.E., P.G., GEI Consultants,
gbonita@geiconsultants.com
Trustee Liaison: Stefano Valagussa, Treviicos Corporation,
svalagussa@treviicos.com
Kwabena Ofori-Awuah

Stefano Valagussa

Anne Lemnitzer

David Miller

Giovanni Bonita

Finalizing the Guide to Selection of Cutoff Methods.

Preparing PowerPoint presentations on structural slurry
wall and cutoff wall construction.

Connecting with DFI's Tunneling and Underground
Committee and tunneling societies (NATC, RETC).

Exploring workgroups to review U.K. rebar splicing
guidelines jointly with the Drilled Shaft Committee.

Beginning update to the Industry Practice and Standards
for Structural Slurry Walls.

Serving as partner committee for S3: Slopes, Slides and
Stabilization Conference, August 3-5, 2021, in San Francisco.

Franz-Werner Gerressen

Soil Mixing
Chair: Dave Miller, P.E., ADM Consulting, amiller527@aol.com
Trustee Liaison: Franz-Werner Gerressen, Dipl.-Ing.,
BAUER Maschinen, franz-werner.gerressen@bauer.de
Mary Nodine

Martin Taube

Published DFI Committee Project Fund project, " Effect of
Curing Stresses on the Mechanical Properties of SoilCement Mixed Materials " available at http://www.dfi.org/
update/DFIResearchSummaryReport.pdf (Leads: George
Onorato, P.E., and Giovanni Bonita, GEI Consultants).
Second phase research project progressing.

Supporting Deep Mixing 2021 efforts to present in online
format.

- Study on seismic performance of rigid inclusions
(Lead: Armin Stuedlein, Ph.D., P.E., Oregon State University).

Serving as partner committee for S3: Slopes, Slides and
Stabilization Conference, August 3-5, 2021, in San Francisco.

- Development of design guideline for pile foundations
subjected to liquefaction-induced lateral spreading
(Lead: Arash Khosravifar, Ph.D., Portland State University).

Reviewing OneMine and Lexicon soil mixing information.

Preparing white paper on recommended QC testing
parameters and evaluation.

- Design guidelines for characterizing the residual
strength of p-y curves for rock-socketed shafts (Lead:
also Khosravifar).

Subsurface Characterization for
Deep Foundations

- Design of drilled shafts subjected to combined effects
of lateral spreading and superstructure inertia (Lead:
also Khosravifar).

Chair: Mary Nodine, P.E., GEI Consultants,
mnodine@geiconsultants.com
Trustee Liaison: Martin G. Taube, P.E. P.G., Menard USA,
mtaube@menardgroupusa.com

Seismic and Lateral Loads
Chair: Kwabena Ofori-Awuah, P.E., D.GE, ENV-SP, Koforia,
kwabena@koforia.com
Trustee Liaison: Anne Lemnitzer, Ph.D., P.E., University of
California, Irvine, alemnitz@uci.edu
*

Sponsoring multiple DFI Committee Project Fund projects:

Exploring future collaborative workshops on seismic
activity in the Midwest with Electric Power Systems Foundations Committee in modeling of foundation systems.

Updating Seismic and Lateral Load Design Guide (Lead: Ben
Turner, Ph.D., P.E., Dan Brown and Associates).

66 * DEEP FOUNDATIONS * JAN/FEB 2021

Contributed to two webinars for DFI's ITS MONEY series,
highlighting cost-saving benefits of appropriate subsurface characterization.

Conducted panel sessions at SuperPile '20 and the DFI
Annual Conference on using Geotechnical Baseline Reports
(GBRs) in the deep foundation industry. Panel series to
continue at IFCEE 2021.

http://www.dfi.org/update/DFIResearchSummaryReport.pdf

January/February 2021

Table of Contents for the Digital Edition of January/February 2021