SEMINAR PROGRAM (Preliminary)
Overview of NGA
An overview of NGA program, database, models, supporting research projects, review process, and examples of
results.
Yousef Bozorgnia, Pacific Earthquake Engineering Research Center (PEER)
USGS National Seismic Hazard Maps
New earth science research on earthquake sources and ground motions across the U.S. that are incorporated in
design maps.
Mark Petersen, U.S. Geological Survey
Project 07: Development of New Ground Motions for Building Codes
An overview of the work of the Seismic Design Procedures Reassessment Group in developing new ground motions
as a basis for improved seismic design procedures.
Charles Kircher, Kircher & Associates
Preparation of New Seismic Design Maps for Building Codes
Derivation of “risk-targeted” seismic design maps from the underlying hazard maps and procedures described in the
preceding two presentations.
Nicolas Luco U.S. Geological Survey
Example Application of NGA Models in Practice: Bay Area Rapid Transit (BART)
Examples of the effects of the NGA models on seismic retrofit program for BART, including both deterministic and
probabilistic hazard results.
Norman Abrahamson, Pacific Gas & Electric Company, or Nick Gregor, Bechtel Corporation
Example Application of NGA Models in Practice: Building Sites
The application of the NGA models and associated issues in developing site-specific seismic design spectra based
on various building codes and standards.
Ivan Wong, Paul Somerville, or C.B. Crouse, URS Corporation
Example Application of NGA Models in Practice: Loss Estimation
The impact of the 2008 National Seismic Mapping project on loss estimation, especially the impact of NGA
functions for various building types.
Mohsen Rahnama, Risk Management Solutions
Panel Discussion
Panel Discussion with above speakers
Design Ground Motion Library (DGML) Package
DGML is an interactive software tool that assists engineers in selecting time histories for use in seismic analyses.
Robert Youngs, AMEC Geomatrix
Using and Comparing NGA Models: A New Excel File of Models
The input parameters required for the NGA models and use of the Excel spreadsheet for computing deterministic
response spectra.
Norman Abrahamson, PG&E, or Linda Al Atik University of California, Berkeley
Ongoing and Future Tasks in NGA Program
List of the ongoing and future tasks, issues, and projects related to the NGA will be provided.
Yousef Bozorgnia, PEER
Panel Discussion
Q&A and Panel Discussion with above speakers