Event: NAGS 2014 Webinar Series: Presentation #3
Date: Wednesday, October 8, 2014, 1-2 pm EDT
Location: Online Webinar
REGISTRATION NOW OPEN (Registration Closes October 7th, 2014)

NAGS is very pleased to announce the 2014 Webinar Series:Presentation #3:
“Geofilters”

Presented by:
R. Jonathan Fannin, Ph.D., P. Eng.
University of British Columbia
Vancouver, Canada;

DATE: Wednesday October 8, 2014, 1:00 – 2:00 pm EST

ABSTRACT: The origins of current design practice for a granular filter are first examined, along with some of the lessons learned over the years from construction of very large embankment dams, including the WAC Bennett dam in British Columbia. The origins of current design practice for a geotextile filter are then examined, in conjunction with some of the lessons learned from their use in earthworks, including the rehabilitation of the Alouette dam spillway in British Columbia. The evidence to-date suggests that both sand-gravel filters and geosynthetic filters have generally performed well at controlling seepage flow in earthwork applications for many years. However there have also been problems reported, both for granular filters and for geotextile filters. This lecture draws upon industry-university research on the sinkhole incident at the WAC Bennett dam in British Columbia, and industry-university research on the filter compatibility of geotextiles in unidirectional and reversing flow, to understand better the significance of issues affecting the performance of geofilters in earthworks. The merits of mandating the use of a geosynthetic filter as an adjunct to a granular filter, in critical infrastructure, are then considered within the context of risk management.

ABOUT THE SPEAKER: Jonathan Fannin obtained a B.Sc. (Civil Engineering) from the Queen’s University of Belfast, and a D. Phil. (Geotechnical Engineering) from the University of Oxford for studies on geosynthetics for soil stabilization. He is a recipient of several awards, including an IGS Award for contributions of laboratory and field research to engineering practice, a CGS Quigley Award for the best paper in the Canadian Geotechnical Journal, a Karl Terzaghi Fellowship from the Norwegian Geotechnical Institute and most recently, a Distinguished Visiting Fellow award from the U.K. Royal Academy of Engineering. Jonathan has provided specialist technical advice on a number of dam projects in North and South America and, in 2013, was made a Fellow of the Engineering Institute of Canada in 2013.

PRESENTATION #3 REGISTRATION FEE:
$100 – Presentation #3 MEMBER Fee: NAGS / CGS / IGS
$300 – Presentation #3 NON-MEMBER Fee ( Save money and become a member of NAGS today! )
$25 – Presentation #3 NAGS Student Member Rate ( Students may apply to NAGS at no charge for membership! )

PDHs: Professional development credit will be available for each participant paying a registration fee.

GROUPS: Small groups of up to five people are welcome to participate for one registration fee. Groups larger than five must pay a second registration fee.

REGISTRATION NOW OPEN (Registration Closes October 7th, 2014)

NOTES: All fees are in USD. Why not join NAGS for $75 USD? Please see www.nags-igs.org for details.

Co-sponsored by the Geosynthetics Division of the Canadian Geotechnical Society (CGS)

NAGS – Providing leadership in advancing the education and research of geosynthetics