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DR.
DANIEL E. PRADEL
Chief Engineer
EDUCATION
Certificate of Postdoctoral Studies, University of
California, Los Angeles, 1989, Major Field: Geotechnical Engineering
Dr. of Engineering, Civil Engineering, University of
Tokyo, 1987, Major Field: Soil Mechanics and Foundation Engineering
Diploma of Civil Engineering, Swiss Institute of
Technology, Lausanne, 1982, Major Field: Civil Engineering
REGISTRATIONS
State of California Registered Geotechnical Engineer
(G.E. 2242)
State of California Registered Civil Engineer (R.C.E.
47734)
State of Nevada Registered Civil Engineer (R.C.E. 12285)
State of Hawaii Registered Civil Engineer (R.C.E 12243)
Registered Engineer in Switzerland Number 2/16791.
Deep Foundation Institute’s High-Strain Dynamic Pile
Testing Certification
Post-Disaster Safety Assessment Program (SAP) Evaluator,
State of California (SAPV61821), Governor’s Office of Emergency Services
(OES)
EXPERIENCE
PRAAD GEOTECHNICAL (1997 to present)
As Chief Engineer and co-founder of Praad
Geotechnical, Dr. Pradel serves as a consulting geotechnical engineer. Dr.
Pradel has performed geotechnical earthquake engineering investigations of
ground motions for specific sites, and regional studies of earthquake damage
and seismicity. Dr. Pradel has also performed geotechnical investigations of
slope failures, settlement, retaining walls, piping and expansion heave. He
has also performed engineering analyses for the grading of engineered fills,
construction of building foundations, and repair and mitigation of slopes
and landslides.
LOCKWOOD-SINGH & ASSOCIATES (1989 to 1997)
Dr. Pradel has performed geotechnical investigations and
analyses of earth failure mechanisms including landslides, subsidence, slope
failure, settlement, and expansion heave. He has also performed engineering
analyses for the design of foundations, earth structures, slopes, and the
evaluation of seismicity, earthquake, and soil structure interaction.
Dr. Pradel has scheduled and directed numerous subsurface
explorations and laboratory testing programs involving soil tests, water
tests, chemical and bacterial analyses. He has conducted engineering
investigations of subsurface conditions involving ground water, seepage,
infiltration into underground structures and leaking underground storage
tanks.
MOTOR COLUMBUS, SWITZERLAND (1982-1984)
Dr. Pradel was an Engineer in the Dams Department of
Motor Columbus Consulting Engineers. He participated in the static and
seismic design, and analyses of earth and concrete dams and their related
structures.
Click here to learn about Dr. Pradel's experience in dams.
PROFESSIONAL AFFILIATIONS
American Society of Civil Engineers, American Society of
Testing Materials, International Society of Soil Mechanics and Foundation
Engineering, Structural Engineers Association of Southern California, Swiss
Society of Engineers and Architects, Swiss Society of Soil and Rock
Mechanics, International Conference of Building Officials.
COMMITTEES AND AWARDS
Committee Member, Recommended procedures for
implementation of DMG SP117 ("Guidelines for evaluating and mitigating
seismic hazards in California") for analyzing and mitigating landslide
hazards in California (2001-2002)
Editor and Committee Member, Recommended procedures for
implementation of DMG SP117 ("Guidelines for evaluating and mitigating
seismic hazards in California") for analyzing and mitigating landslide
hazards in California (1999-2000)
Chair of the Los Angeles Geotechnical Technical Section
of the American Society of Civil Engineers (1999-2000).
Vice-Chair of the Los Angeles Geotechnical Technical
Section of the American Society of Civil Engineers (1998-1999).
Treasurer and Secretary of the Los Angeles Geotechnical
Technical Section of the American Society of Civil Engineers (1996-1998).
1st and 2nd Director of the Los Angeles Geotechnical
Technical Section of the American Society of Civil Engineers (1994-1996).
Committee Member of the Geotechnical Engineering Career
Awards Committee, for the National Science Foundation (1997).
Committee Member of the Slope Stability Committee for the
Los Angeles County Department of Building and Safety (1995-1996).
Committee member of the American Society of Testing
Materials Committee on Soil and Rock (1990-present).
Subcommittee chairman for the Structural Engineers
Association of Southern California for Foundations (1990 - 1992).
Committee member of the American Society of Testing
Materials Committee on Waste Management (1992-present).
"State of Vaud" award for thesis at the Swiss Institute
of Technology in Lausanne, Switzerland (1982).
TEACHING, RESEARCH AND PUBLICATIONS
Dr. Pradel is an Adjunct Associate Professor at UCLA. He
has taught graduate and undergraduate courses in Soil Mechanics, Foundation
Engineering, Slope Stability, Earth Retaining Structures, Finite Elements,
Constitutive Modeling and Structural Engineering in the Department of Civil
and Environmental Engineering since 1988.
Dr. Pradel is the author of more than ten technical
papers which have been published in the Journals of the "American Society of
Civil Engineers", in "Soils and Foundations", and in several conferences
including the International Conference of Soil Mechanics and Foundation
Engineering. He has also reviewed technical papers for the "Journal of
Geotechnical Engineering", the "Geotechnical Testing Journal", the "Journal
of Engineering Mechanics" and "Computers and Geotechnics", and participated
in the Peer Review of the US Army Corps. of Engineers’ Manuals.
Dr. Pradel is also an active member in several research
committees, his duties include reviewing documents and standards for the
American Society of Testing Materials (ASTM), being member of the American
Society of Civil Engineers Education Committee, and was subcommittee
chairman for "Foundations" within the Structural Engineers Association of
Southern California.
PUBLICATIONS IN JOURNALS AND BOOKS:
Pradel D., Smith P., Stewart J. and Raad G. (2005), "Case
History of Landslide Movement during the Northridge Earthquake". ASCE
Journal of Geotechnical and Geoenvironmental Engineering, Vol. 131, No. 11,
1360-1369.
Pradel D. (1997), "Procedure to Evaluate
Earthquake-Induced Settlements in Dry Sandy Soils". ASCE Journal of
Geotechnical Engineering, Vol. 124, No. 4, 364-368 and Vol. 124, No. 10,
1048.
Pradel D. and Raad G. (1993), "Influence of Permeability
on Surficial Stability of Homogeneous Slopes". ASCE Journal of Geotechnical
Engineering, Vol. 119, No. 2, 315-332.
Pradel D., Raad G. and Harter R. (1992),
"Hydrocompression Settlement of Deep Fills, Discussion". ASCE Journal of
Geotechnical Engineering, Vol. 118, No. 6, 954-955.
Lade P.V. and Pradel D. (1990), "Stability and Flow of
Granular Materials: Experimental Investigation". ASCE Journal of Engineering
Mechanics, Vol. 116, No. 11, 2532-2550.
Pradel D. and Lade P.V. (1990), "Stability and Flow of
Granular Materials: Analytical Investigation". ASCE Journal of Engineering
Mechanics, Vol. 116, No. 11, 2551-2566.
Pradel D., Ishihara K. and Gutierrez M. (1990), "Yielding
and Flow of Sand under Principal Stress Axes Rotation". Soils and
Foundations, Vol. 30, No. 1, 87-99.
Towhata I., Pradel D. and Ishihara K. (1988) "Plasticity
Approach to Sand Behavior Under Principal Stress Axes Rotation".
Micromechanics of Granular Materials, Studies in Applied Mechanics, Vol. 20,
191-200.
PUBLICATIONS IN PROCEEDINGS:
Pradel D. (1994), "Active Pressure Distribution in
Cohesive Soils". Proc. of the XXIth International Conference of Soil
Mechanics and Foundation Engineering, New Delhi, Vol. 2, 795-798.
Pradel D. (1991), "Instability and Plastic Flow of
Soils". ASCE Engineering Mechanics Specialty Conference, Columbus OH,
1174-1178.
Pradel D. and Lade P.V. (1989), "Plastic Flow and
Instability of Granular Materials". Proc. of the IIIrd International
Symposium on Numerical Models in Geomechanics, Niagara Falls, 9-16.
Lade P.V. and Pradel D. (1989), "Comparison of Single and
Double Hardening Models for Frictional Materials". Proc. of the IIIrd
International Symposium on Numerical Models in Geomechanics, Niagara Falls,
147-154.
Pradel D. and Lade P.V. (1989), "Instability of Sand
Under Applied Shear Stresses". Proc. of the XXth International Conference of
Soil Mechanics and Foundation Engineering, Rio de Janeiro, 8/18: 743-748.
Pradel D. (1988), "Model with Multiple Mechanisms for
Anisotropic Behaviors of Sands". Proc. of the VIth International Conference
on Numerical Methods in Geomechanics, Innsbruck, 503-508.
Pradel D., Ishihara K. and Gutierrez M. (1987), "On
Modeling of Inherent Anisotropy of Sands". Proc. of the XXIIth Japan
National Conference on Soil Mechanics and Foundation Engineering, Niigata,
359-362
Pradel D. and Ishihara K. (1987), "Elastoplastic Model
for Anisotropic Behavior of Sands". Proc. of the IInd International
Conference on Constitutive Laws for Engineering Materials, Tucson, 631-638.
COMMITTEE PUBLICATIONS:
American Society of Civil Engineers (2003): "Seismic
Evaluation of Existing Buildings" ASCE/SEI 31-03.
Southern California Earthquake Center (2002): "Recommended Procedures for
Implementation of DMG Special Publication 117 Guidelines for Analyzing and
Mitigating Landslide Hazards in California."
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