30 YEARS OF GEOSYNTHETICS USE—WHAT MAY BE IN STORE FOR THE NEXT 30 YEARS
David B. Paul Construction Engineer US Bureau of Reclamation Technical Service Center
Denver, CO
(Wednesday, February, 25, 2009 8:00-9:00AM)
ROOM: 255 A-C
The address will summarize the signifi cant Bureau of Reclamation projects over the last 30 years that have used
geosynthetics.They include: Mt. Elbert Forebay Reservoir, San Justo Reservoir, Summitville Mine, Drop 2 Reservoir,
and Gilt Edge Mine. I will also discuss the new FEMA Manual for Use of Geotextiles in Dams. I will also discuss
the use of geomembranes for rehabilitation of canals.
Mr. Paul is a graduate of the University of Illinois at Champaign/Urbana. His graduate work was completed
at Oklahoma State University and the University of Colorado.
He is a member of the American Society of Civil Engineers (ASCE), the Association of Sate Dam Safety
Officials (ASDSO), and the United States Society on Dams (USSD).
He is a registered engineer in Colorado.
Mr. Paul has been employed by the US Bureau of Reclamation for 31 years. His current position is
Construction Liaison Engineer in the Construction Management Group. He supports a wide variety of design
and construction projects for Reclamation as well as other Bureaus within the Department of the Interior.
He has worked on a wide variety of projects including design and construction of seven major embankment
dams, numerous major dam and canal rehabilitation projects under Reclamation’s Dam Safety program,
environmental cleanups for EPA including the cleanup of Summitville Mine in Colorado and Gilt Edge Mine in the
Black Hills of South Dakota.
Mr. Paul has been involved in several major projects involving geosynthetics including Mt. Elbert
Forebay Reservoir, Colorado; San Justo Reservoir; California; Reach 11 Dikes, Arizona, Summitville Mine,
Colorado; Gilt Edge Mine, South Dakota; and Drop 2 Reservoir, Arizona.
In addition, he was a member of the committee that prepared the recent FEMA Report titled—"Geotextiles in
Embankment Dams."
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 THE TERZAGHI LECTURE:
CRITERIA FOR GEOTEXTILE AND GRANULAR FILTERS
by J.P. Giroud
( Thursday, February 26, 2009 8:00-9:30AM )
ROOM: 255 A-C
The 2008 Terzaghi Lecture was first presented at the GeoCongress of the American Society of
Civil Engineers (ASCE). The lecture presented at Geosynthetics 2009 will be an updated and expanded version of the original lecture. This
lecture presents a summary of more than 30 years of work on geotextile and granular filters by the author. A rational approach to the
development of filter criteria is presented in a lively manner using animated slides. In particular, the author demonstrates that, while
two criteria are needed for granular filters, four criteria are needed for geotextile filters. The author also demonstrates that, while the
traditional permeability criterion for granular filters is adequate, the retention criterion for granular filters could and should
be improved by adapting some of the features of the retention criterion for geotextile filters. The application of the filter criteria
is illustrated and discussed step by step using the case history of the design, construction and performance monitoring of a
geotextile filter in a dam constructed in 1970 and still in service. This prestigious lecture is a bridge between geosynthetics
engineering and geotechnical engineering.
Dr. Giroud, a former professor of geotechnical engineering, is a
consulting engineer under JP GIROUD, INC., and Chairman
Emeritus and founder of Geosyntec Consultants, a large
consulting company. Dr. Giroud is chairman of the editorial
board of Geosynthetics International and past president of the
International Geosynthetics Society (the IGS). He coined the
terms "geotextile" and "geomembrane" in 1977 and has authored
over 350 publications. He has developed many of the design
methods used in geosynthetics engineering (in particular for
leakage through liners, liner stability, unpaved roads, and filters)
and has originated a number of geosynthetics applications, in
particular for landfills, liquid impoundments, and dams. In
1994, the IGS named its highest award "The Giroud Lecture", "in
recognition of the invaluable contributions of Dr. J.P. Giroud to
the technical advancement of the geosynthetics discipline. In
2002, Dr. Giroud became Honorary Member of the IGS with
the citation "Dr. Giroud is truly the father of the International
Geosynthetics Society and the geosynthetics discipline". In 2005,
Dr. Giroud has been awarded the status of "hero" of the Geo-
Institute of the American Society of Civil Engineers (ASCE) and
has delivered the prestigious Vienna Terzaghi Lecture in Austria.
In 2005–2006 he presented the Mercer Lectures, a prestigious
lecture series endorsed jointly by the IGS and the International
Society for Soil Mechanics and Geotechnical Engineering. In
2007, J.P. Giroud became Doctor Honoris Causa of the University
of Bucharest (Romania) and in 2008 he delivered the prestigious
Terzaghi Lecture of the ASCE. |
The Ground is Moving - Geotechnical and Geosynthetic Design Challenges on the I-15 and Woodrow Wilson Bridge Mega-Projects
John Volk with URS
(Friday, February, 27, 2009 8:00-9:00AM)
ROOM: 255 A-C
The I-15 Highway Reconstruction Project was a $1.6 billion Design-Build Project in Salt Lake City, Utah that involved 15 miles of highway construction and 140 bridges. This project was on an expedited schedule to provide transportation needs for the 2002 Winter Olympics. Much of the highway reconstruction was over soft clay deposits to depths of 60 feet. New embankments were constructed to heights of 40 to 50 feet. Staged construction with high-strength geotextiles and PV drains was the primary means of ground improvement for the construction. Lightweight fills and lime-cement columns were also utilized on the project. Mr. Volk will discuss the many technical design challenges and how geosynthetics and other geotechnical applications met those challenges. The geosynthetics and subsoils were monitored with instrumentation.
The Woodrow Wilson Bridge Reconstruction Project is a $2.5 billion project in Alexandria, Virginia over the Potomac River into Maryland begun in 2001 and to finish in 2012. This project involves 8 miles of highway reconstruction, a 6,075 ft long bridge, and over 40 smaller bridges. Much of the highway reconstruction was over soft clay deposits to depths of 20 to 35 feet. New embankments were constructed to heights of 20 to 40 feet. Nearly every ground improvement methodology was utilized on this project: PV drains, high-strength geotextiles, soil mixing, aggregate piers, piled embankments with geosynthetic-reinforcement. Lightweight fills were also used extensively on this project. Extensive instrumentation was utilized on this project as well.
In presenting these two projects, Mr. Volk will discuss:
• Soft ground engineering utilizing staged construction and surcharging to reduce post-construction settlement
• The role of geosynthetics as a ground improvement technology
• Other ground improvement techniques such as soil mixing, piled embankments, and stone columns
• Lightweight fills such as geofoam, low-density cementitious fill, and expanded shale
• High-quality subsurface characterization
• The role of test embankments in gaining value
• MSE Walls
• Adjacent Structure Issues
• Observational Method using Instrumentation
Mr. John C. Volk, P.E., is a Vice President and Principal Engineer with URS Corp. (formerly Woodward-Clyde) in Philadelphia, PA. Mr. Volk joined Woodward-Clyde in 1985 after completing his B.S. and M.S. in Civil Engineering at the University of Delaware. He is a member of the American Society of Civil Engineers (ASCE), American Society of Highway Engineers (ASHE), and Transportation Research Board's (TRB) Geosynthetic Committee for 9 years. Mr. Volk is a registered engineer in Pennsylvania, New Jersey, Delaware, Virginia, New York, and Ohio. Mr. Volk manages the geotechnical practice in the Philadelphia Metro area.
Mr. Volk continues to provide ground improvement oversight for the Woodrow Wilson Bridge Reconstruction Project and works both regionally and nationally on soft ground projects. He is presently working on the levee reconstruction in New Orleans.
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