Webinar: Preliminary Geological and Structural Reconnaissance Observations from the August 9, 2020 Sparta, NC Earthquake

Webinar: Preliminary Geological and Structural Reconnaissance Observations from the August 9, 2020 Sparta, NC Earthquake

Wednesday, September 30 at 11 am PT / 2 pm ET  
Cost: Free for EERI members and non-members (PDH hours included upon request)

REGISTER HERE

 

On August 9, 2020 at 8:07AM, the largest recorded earthquake to strike North Carolina occurred near Sparta. The 5.1 magnitude earthquake (MMI 6) was preceded in the days before by several small foreshocks felt by local residents and followed to date by ~100 aftershocks. In this webinar, a multidisciplinary team from NC State, UNC-Chapel Hill, USGS, and NC Geological Survey will discuss their observations including ground shaking characterization, geological features, and structural damage assessment.

The earthquake caused ground deformation and surface rupture, which is expressed by several fissures and small scarps, disposed with en-echelon patterns roughly striking 100° along a narrow deformation zone that is traceable for 2–3 km. The rupture has a maximum vertical displacement of ~20 cm, with an average vertical displacement of 8–10 cm with a reverse motion and/or folding/flexure. Preliminary InSAR data shows consistency with the focal mechanism, suggesting the existence of a NW-SE structure and relative uplift of the hanging wall and subsidence of the footwall. The surface rupture seems to be associated with pre-existent discontinuities, which can be reactivated under favorable conditions. Questions arise related with the seismogenic source and secondary structures that may have accommodated the deformation closer to the surface.

This event caused damage to more than 600 houses and the distribution of damage and shaking reports (“Did you feel it?”, USGS) suggests a stronger shaking in the hanging wall, as expected in a reverse motion. Structural damage was sufficient to condemn many houses, with substantial damage to some unreinforced masonry (especially chimneys). Based upon calculations of rocking response, peak ground accelerations of at least 0.2g likely occurred, which is compatible with USGS estimates. In addition, non-trivial damage to building contents in the town center was observed.

SPEAKERS

Dr. Mervyn J. Kowalsky is the Christopher W. Clark Distinguished Professor of Structural Engineering at NC State University in Raleigh, NC. He earned his BS, MS and PhD degrees at the University of California, San Diego.His research interests are in the development of seismic design and analysis methods for structural systems, with a special interest in Direct Displacement-Based seismic design. His work includes large scale structural testing and non-linear modelling aimed at understanding the mechanisms that characterize the seismic behavior of structures.

Ariadne L. Palma Parra began her university studies at Universidad de La Salle in Bogota, Colombia and continued to earn her Bachelor’s of Science in Civil Engineering at NC State University in 2017 and her Masters of Science in Structural Engineering in Fall 2019. As part of her doctoral studies at NC State, she is currently conducting computational work on response spectra definitions used in seismic design and experimental research on the evaluation of steel bridge structures. Her primary research interests are in performance based seismic engineering and large scale testing of structures.

Dr. Paula M. Figueiredo is a Post-Doctoral Researcher at NC State University in Raleigh, NC. She earned her BS, MSc and PhD in Geology at the University of Lisbon, Portugal, where she researched the Neotectonics and Active Tectonics of SW Portugal. Her research focus on active tectonics, paleoseismology, tectonic geomorphology, Quaternary geochronology and surfaces processes. In particular, she applies terrestrial cosmogenic nuclide and optically stimulated luminescence dating to obtain timings and rates of deformation. She has been conducting research at several locations in southern California and Nevada, Baja California, Portugal and other locations, supported by NSF, SCEC and NEHRP. She has published several papers related with active tectonics, paleoseismology in plate boundary and intra-plate settings.

Dr. Arthur J. Merschat is a research geologist with the U.S. Geological Survey and adjunct research professor at Appalachian State University in Boone, NC. He is a co-project chief of the USGS Piedmont and Blue Ridge Project. Arthur’s primary research goal is to create accurate, detailed geologic maps, with a special interest in complexly deformed crystalline rocks. He has spent the past 20 years studying the structure and tectonics of the Appalachians and has worked on geologic mapping projects in the southern Appalachians (Blue Ridge and Inner Piedmont), New England, and Adirondacks. He has published several papers, geologic maps, and field trip guidebooks on Appalachian geology with an emphasis on the geology of the Blue Ridge and Inner Piedmont.

Dr. Lewis A. Owen is Professor and Head of the Department of Marine, Earth, and Atmospheric Sciences at NC State University in Raleigh, N.C. He received his B.Sc. in Geology, from Imperial College, University of London, and Ph.D. from the University of Leicester, U.K. He has held faculty positions at the University of Cincinnati, the Hong Kong Baptist University, Royal Holloway – University of London, and the University of California – Riverside. Dr. Owen’s research focuses on the Quaternary geology and geomorphology of tectonically active mountain belts and their forelands, particularly in the Himalayan-Tibetan orogen and the Cordilleras of North and South America. He has also undertaken research in other tectonically active regions, including the Red Sea margin in Yemen and the Atlas and Anti-Atlas Mountains of Morocco.

Dr. Kevin G. Stewart is an Associate Professor of Geological Sciences at the University of North Carolina at Chapel Hill. He earned his BS degree from the University of Michigan and his Ph.D. from the University of California, Berkeley. His research is focused on the structural geology and tectonic history of mountain belts including the southern Appalachians, Apennines and Rocky Mountains. His work has been supported by the National Science Foundation, the US Geological Survey, and several Foundations.

Richard Wooten is the Senior Geologist for Geohazards and Engineering Geology at the North Carolina Geological Survey. He earned his B.S. and M.S. degrees in Geology at the University of Georgia. His work includes landslide investigations and applied geotechnical geology with the USDA-Forest Service on the Gifford Pinchot National Forest in Washington State. His work with the North Carolina Geological Survey includes geologic mapping in the Piedmont and Blue Ridge, and research on landslides, landslide hazard mapping and modeling. He has a special interest in the relationships of ductile and brittle faulting and other bedrock structures with geomorphology, and landslide processes and hazards.

Webinar: Lifeline Infrastructure System Resilience – Exploring What Is It and How We Can Implement

Webinar: Lifeline Infrastructure System Resilience – Exploring What Is It and How We Can Implement

Thursday, September 10 at 11 am PT / 2 pm ET  
Cost: Free for EERI members | $50 for non-members (PDH hours included upon request)

REGISTER HERE

 

Lifeline infrastructure system resilience — prior to and following disruptions due to natural or technological hazards — is intimately linked to and supports community resilience. Lifelines are interdependent socio-technical systems vital in the day-to-day operations of our communities and their basic services are essential for community recovery after earthquakes and other extreme events. Lifelines include electric power, gas and liquid fuel, water and wastewater, telecommunication, and multi-modal transportation systems.

In this webinar, you will gain an understanding of key concepts needed for lifeline systems to be resilient to earthquakes and other hazards. You’ll also gain insight into the needed future work to fully operationalize lifeline system resilience using functionality, operability, and functional recovery measurements.

Functionality and operability are continuous expressions useful for measuring lifeline system resilience. These expressions are explored along with the basic lifeline services and their recoveries needed to ensure communities can achieve their resilience objectives. The concept of functional recovery is being further developed by FEMA and NIST as part of the 2018 National Earthquake Hazards Reduction Program (NEHRP) reauthorization and is closely related to operability.

Speaker

Craig A. Davis, Ph.D., PE, GE is a professional consultant on geotechnical, earthquake, and lifeline infrastructure system resilience engineering. In his three-decade long career at the Los Angeles Department of Water and Power, Water System (LADWP), Davis worked as the Departmental Chief Resilience Officer, Resilience Program Manager, Seismic Manager, Geotechnical Engineering Manager, and Trunk Line Design Manager.

There he developed a comprehensive L.A. Water System resilience program and was involved in creating policy for improving infrastructure systems to threats and hazards. He also investigated and evaluated numerous dams and tunnels, managed several multimillion dollar projects, and implemented unique and innovative designs while aiding the development of new technologies and their applications.

He has published more than 140 technical papers and organized international workshops and symposiums on geotechnical engineering and lifeline system resilience. He has served on many national and international professional committees, including the Building Seismic Safety Council, the National Earthquake Hazards Reduction Program Advisory Committee on Earthquake Hazards Reduction, ASCE Infrastructure Resilience Division, and the International Society of Lifeline and Infrastructure Earthquake Engineering.

Davis has been honored with many awards, including the ASCE 2016 Le Val Lund Award for Practicing Lifeline Risk Reduction and the 2020 Charles Martin Duke Lifeline Earthquake Engineering Award. He received a B.S. from the California Polytechnic State University in San Luis Obispo and an M.S. and Ph.D from the University of Southern California, all in civil engineering.

A message from EERI Executive Director Heidi Tremayne

Heidi Tremayne (M.EERI,2004)We’re living in a time of great uncertainty and difficulty, as universities and schools navigate reopening, and businesses and the construction industry face economic uncertainty. Much of our work remains virtual and impacted by other responsibilities at home and COVID-19 cases continue to rise in many regions. Despite these challenges, EERI and our work together continue. I hope that we remain a consistent and inspiring source of information and activity for you.

To respond to the current environment, member volunteers, committees, staff, and the Board are working behind the scenes to keep us adjusting and thriving in these times. As we head into the fall, here are just a few things that we’re working on to better serve you:

  • Increasing our free webinar offerings for members that are designed to help you learn about new developments in the field. With the help of our Professional Development Committee, we’re continuing to increase webinars through the end of the year and are working on a robust plan for 2021.
  • Conducting a strategic planning process for the Institute. The EERI Board of Directors and staff are in the midst of a strategic planning process to reinforce our values and explore how we want to serve our members and achieve our mission, especially in light of the new and changing global conditions.
  • Considering how EERI can embrace Diversity, Equity and Inclusion in a meaningful way. The Board is developing a resolution with specific, measurable actions to ensure that EERI is a welcoming home for all.
  • Enhancing our virtual membership experience. Staff is working on improving our website and membership portal so that you can easily access resources and make the most of your membership.
  • Reviewing record numbers of Earthquake Spectra submissions. The Earthquake Spectra Editorial team, including many volunteer reviewers, is tackling the review of the large surge in submissions that we’ve seen since the start of the pandemic. You will continue to be the first to learn of newly published papers and curated recommendations from our Spectra-specific e-blasts. You can also expect a new special issue with community contributions from the Global Earthquake Model later this year.

As these activities produce results, you will hear more from us. To close, I want to thank the many members who make this exciting work possible, as they volunteer extra time amidst their own personal circumstances and global turmoil. It is truly a testament to the selflessness of our member volunteers and reinforces the need for EERI’s ongoing activities toward earthquake risk reduction. As always, I welcome your participation and feedback.

New Report: Ridgecrest Earthquake Sequence Reconnaissance Report

As a managing partner of the California Earthquake Clearinghouse, EERI, along with the California Geological Survey, operated a physical clearinghouse location in Ridgecrest, CA following the M6.4 earthquake on July 4, 2019. Over the course of the weeklong activation, the scientific and engineering communities came together in clearinghouse briefing calls to coordinate, collaborate, and share information. The Ridgecrest Earthquake Sequence Reconnaissance Report is a product of this community effort to document impacts and share lessons.

The multi-disciplinary report captures reconnaissance findings from the first months following the main shock and includes sections from over 30 contributors. The report includes sections on geosciences, geotechnical impacts, lifelines, structural impacts, emergency response, clearinghouse operations, and data collection methods and products. The report features a close look at the extent of damage to manufactured homes, which emphasized the vulnerability of these structures, given the limited occurrence of damage to structures overall in the City of Ridgecrest. The report also includes several sections on data collection methods and products that show progress in collecting and coordinating post-earthquake data.

The report, along with many more resources, is available on the Ridgecrest Earthquake Sequence Virtual Clearinghouse site. This report was published as a part of EERI’s Learning from Earthquakes program with funding from FEMA. Read the report here.

Webinar: A Multi-Disciplinary Approach to Improving Community Resilience to Natural Hazards

Webinar: A Multi-Disciplinary Approach to Improving Community Resilience to Natural Hazards

Wednesday, August 26 at 11 am PT / 2 pm ET  
Cost: Free for EERI members | $50 for non-members (PDH hours included upon request)

REGISTER HERE

 

You’ll hear from John W. van de Lindt, Ph.D., on a timely and important topic — moving from performance-based engineering to multi-disciplinary community resilience, in which engineering merges with social, economic, and information science. You’ll also gain an understanding of how the concepts and practice of multi-disciplinary community resilience are developing.

The webinar will use 15 years of whole building shake table tests of resilient and non-resilient wood-frame apartment buildings to enter this discussion from an earthquake engineering perspective. Resilient buildings and physical infrastructure support social and economic institutions within a community and are necessary to achieve urban resilience to earthquakes and other natural hazards. Interdependencies in these systems play a key role and act within networks, across networks, and across disciplines making modeling a complex endeavor. 

Van de Lindt will explore these interactions in a fundamental form for earthquakes, tornadoes, and floods. He will also cover how these complex systems are modeled, which metrics are tracked to identify stability and improvements in resilience, and close with a longitudinal field study being used to help validate these complex models.

Speaker

John W. van de Lindt, Ph.D., is the Harold H. Short Endowed Chair Professor in the Department of Civil and Environmental Engineering at Colorado State University. He is the co-director for the National Institute of Standards and Technology-funded Center of Excellence for Risk-Based Community Resilience Planning, headquartered at the university. 

Over the last two decades, van de Lindt’s research has sought to improve the built environment by making structures and structural systems perform to the level expected by their occupants, government, and the public. This has been primarily through the development of performance-based engineering and test bed applications of building systems for earthquakes, hurricanes, tsunamis, tornadoes and floods.

Van de Lindt led both the NEESWood and NEES-Soft project teams between 2005-2013, which consisted of two-story, four-story, and six-story shake table tests on the world’s largest shake tables. He serves on ASCE’s Executive Committee for the Infrastructure Resilience Division and Structural Engineering Institute. He has published more than 400 technical articles and reports, including more than 200 journal papers. Van de Lindt has served on a number of editorial boards and is the incoming chief editor for the Journal of Structural Engineering.

Free webinar: Advances in Seismic Risk Assessment using Simulated Earthquake Ground Motions

Webinar: Advances in Seismic Risk Assessment using Simulated Earthquake Ground Motions

Monday, August 10 at 11 am PT / 2 pm ET  
Cost: Free (PDH hours included upon request)

REGISTER HERE

Presented by the EERI Younger Members Committee, this webinar will discuss recent studies that utilize physics-based simulations to identify the important characteristics of earthquake ground motions and expected structural response. Physics-based simulations of earthquake ground motions have steadily emerged as an alternative for seismic risk assessment of civil structures, particularly for regions expected to experience large-magnitude and rare earthquakes, for which few observational data is available.

Speakers will explore approaches in three regions in the United States: (1) shallow crustal earthquakes representative of Hayward Fault ruptures in the San Francisco Bay Area; (2) large-magnitude earthquakes due the Cascadia Subduction Zone in the Pacific Northwest; and (3) SCEC CyberShake earthquakes in the Los Angeles area. All studies utilize large-scale three-dimensional models that characterize the sedimentary basin in their respective regions. Panelists will also discuss the effects of the geologic structure on the simulated ground motions and the impacts on the structural demands and collapse risk.

Speakers 

Maha Kenawy is a postdoctoral scholar in structural engineering at the University of Nevada, Reno. Her research focuses on assessing the performance of reinforced concrete structures subjected to extreme events, and characterizing regional earthquake hazard and risks to the built environment. Maha holds a Ph.D. in Civil and Environmental Engineering from the University of California, Davis, and a M.Sc and B.Sc from the American University in Cairo, Egypt. She is the recipient of the 2016 ASCE O.H. Ammann Research Award in Structural Engineering, and the AUC Laboratory Instruction Graduate Fellowship. She serves as a co-chair of EERI’s Younger Members Committee and a member of the Student Awards Committee, and has previously served as president of the EERI UC Davis student chapter and secretary of the EERI Student Leadership Council.

Nasser Marafi is a Senior Modeler at Risk Management Solutions, Inc. in Newark, California. Prior to joining RMS, Nasser held a postdoctoral research position at the Department of Civil & Environmental Engineering, University of Washington, where he also earned his PhD studying the effects of large-magnitude subduction earthquakes on structures located in deep sedimentary basins. During his studies, Nasser received the EERI/FEMA NEHRP Graduate Fellowship, EERI Graduate Student Paper Award, and the UW-CEE Charles H. Norris Award.

Nenad Bijelić is a postdoctoral scholar at the Unit of Applied Mechanics, University of Innsbruck, Austria. He obtained his Ph.D. (2018) and M.S. (2014) from Stanford University and B.S. (2010) from the University of Zagreb, Croatia all in civil engineering. In 2012, he received a Fulbright Science and Technology award to study earthquake engineering in the U.S. His research is in the area of structural and earthquake engineering, focusing on dynamics of nonlinear systems and application of statistical and machine learning tools.

Earthquake Spectra Highlights – July 2020

The Earthquake Spectra Editorial Team recommends the following recently released OnlineFIRST articles.


 

PUBLIC POLICY

Incorporating societal expectations into seismic performance objectives in building codes

June 9, 2020 | Alexa Tanner, Stephanie E. Chang, Kenneth J. Elwood

This opinion paper argues that seismic code objectives should reflect how society expects the built environment to perform in an earthquake. Social science methods can be employed to overcome the challenges of understanding what standards society holds for seismic performance… read more

RECOMMENDATION: Tanner, Chang, and Elwood (2020) note that currently, there is little known about what the public actually expects should occur post-earthquake, what risk tolerance levels are, and if the current building codes meet societal expectations. They go on to discuss the importance of incorporating societal expectations in building codes and suggest guiding principles on eliciting public perspectives.



LIFELINES

Fragility curves for toppling of railroad locomotives

June 18, 2020 | Bruce F. Maison

This paper uses three locomotives that overturned (toppled) during strong earthquakes (>6.5M) as computer analytical case studies. The locomotives were at rest or traveling very slowly at the time of the earthquakes. Fragility curves are presented relating ground shaking intensity to the likelihood of toppling… read more

RECOMMENDATION: Bruce Maison’s paper answers the curious question as to what levels of shaking does it take to topple a standard gauge railroad locomotive. Overall, the shaking levels are higher than ground motions often experienced in the western U.S., and there are similar implications for freight and passenger cars with similar characteristics.

 


 

GEOTECHNICAL ENGINEERING 

A global hybrid VS30 map with a topographic slope–based default and regional map insets

June 9, 2020 | David C. Heath, David J. Wald, C. Bruce Worden, Eric M. Thompson, Gregory M. Smoczyk

Time-averaged shear wave velocity over the upper 30 m of the earth’s surface (VS30) is a key parameter for estimating ground motion amplification as both a predictive and a diagnostic tool for earthquake hazards. This paper highlights the development of a new hybrid global VS30 map database that defaults to the global slope-based VS30 map, but smoothly inserts regional VS30 maps where available… read more

RECOMMENDATION: Heath and others present an updated USGS Global Vs30 map and underlying grids. The mosaic map is a hybrid of underlying slope-based Vs30 with smooth insets of regional or national Vs30 maps constrained by other means (Vs30 data, geology, geomorphology, etc.).

 



SOCIAL SCIENCE

Post-earthquake hospital functionality evaluation: The case of Kumamoto Earthquake 2016

June 15, 2020 | Nebil Achour, Masakatsu Miyajima

This paper investigates the impact of damage on the performance of the healthcare service following the 2016 Kumamoto earthquakes. The study connects earthquake metrics and the loss of healthcare service functionality and reveals the reasons for which facilities were totally or partially evacuated… read more

RECOMMENDATION: Following the 2016 Kumamoto earthquakes where the stricken areas lost approximately 15% of their healthcare functionality, Achour and Miyajima found that the current building standards increased the performance of hospital buildings by approximately 10%; though more attention is needed to protect architectural and critical systems.

 


 

PUBLIC POLICY

The role of risk measures in making seismic upgrading decisions

June 11, 2020 | Lukas Bodenmann, Panagiotis Galanis, Marco Broccardo, Božidar Stojadinović

This paper leverages advancements in financial risk management to examine the role of risk measures to quantify the seismically induced financial risk, measure the benefit of seismic upgrading, and relate the benefit of seismic risk reduction to a degree of the implemented seismic upgrade… read more

RECOMMENDATION: Seismic upgrading is an upfront investment without an immediate corresponding gain of the Property’s value. And, communicating benefits of upgrading is difficult without a framework to assess seismic performance in financial terms. Bodenmann et al. show that the selection of the risk measure in quantifying the losses avoided by seismic upgrading of an existing building is crucial in formulating systematic seismic risk mitigation policies.

 


 

STRUCTURAL ENGINEERING

Assessment of the seismic safety of school buildings in Mexico: A first look

June 11, 2020 | Sergio M. Alcocer, José C. Arce, David Murià-Vila, Luciano R. Fernández-Sola, Daniel A Guardia

This paper provides the first comprehensive review of the data and analysis on the seismic performance of school buildings in the aftermath of the 2017 earthquakes… read more

RECOMMENDATION: Alcocer et al. (2020) employ analysis of the observed damage at 12,444 public school buildings across 2,536 campuses in Mexico caused by two earthquakes in September 2017, where about 84% of building stock is made of masonry and concrete. By providing evidence-based information on the observed, measured, and calculated seismic performance (after static analyses) of Mexican school buildings, their study concludes with a series of policy and technical recommendations.

EERI welcomes Concrete West Construction as Subscribing Member

We are excited to welcome our newest Bronze Subscribing Member, Concrete West Construction, Inc.! Concrete West Construction, Inc. is a specialty contractor for existing buildings based in Southern California. CCW specializes in all aspects of structural construction and seismic retrofit, including concrete (sawcut, break/demo, excavation, rebar and pour), shotcrete, steel, rough carpentry, micropiles, and CFR.

EERI Subscribing Membership provides a unique opportunity for companies and organizations to publicly demonstrate their support for earthquake risk reduction, as well as valuable opportunities for recognition, networking, and access within the earthquake resilience field. Learn more about EERI Subscribing Membership here.

Remembering William J. Hall

Written by Steven McCabe (M.EERI,1983)

5 Honorary Hall Photo smallProfessor William J. Hall (M.EERI,1973), who was recently recognized as an EERI Honorary member at the Annual Meeting in San Diego on March 5, 2020, passed away on Tuesday, June 9, 2020, in Urbana, Illinois. He was 94. His death closes a remarkable life that took him around the world as he served his country, did research, worked on engineering projects, and to Urbana where he taught the next generation of engineers. Through it all, he remained a very good man. Kind, considerate, and a born teacher. One who put his wife Elaine, his children, grandchildren, and great grandchildren and his faith at the heart of his life. Bill was my doctoral advisor, my friend, and mentor over the past 40 years. Permit me a few lines of reminiscences about Bill.

William J. Hall was a long-standing member of the Civil and Environmental Engineering Department at the University of Illinois from 1954 to his retirement in 1993. He was the Department Head of CEE from 1984 to 1991. He advised 120 graduate students during his tenure, including 30 doctoral candidates. He was a member of the National Academy of Engineering and published over 200 formal publications and another 150 major consulting reports. He worked on a variety of significant projects including being a member of the design team for the Trans-Alaska Pipeline, was a member of the US Defense Nuclear Safety Board, did frequent technical assignments for the Department of Defense and was the chair of the SAC Project Oversight Committee following the Northridge Earthquake. When you needed help, you called Bill.

Professor Hall was born in Berkeley, Calif., the son of Raymond and Mary (Harkey) Hall. His parents were native Kansans, both graduating from the University of Kansas in the early 1920s. His father went on to receive his M.S. and Ph.D. from UC Berkeley in 1928 and then embarked on a remarkable career in biology and conservation. He became a renowned mammologist who was regarded as one of the foremost researchers of his era. Bill grew up in Lafayette, Calif. with his brothers Hubbard and Benjamin. All three brothers went on to obtain their doctorates; Hub in Geology and Ben in Biophysical Chemistry. All three went on to highly successful careers. Hub as the North Sea Oil Field manager for ExxonMobil and Ben as a chaired professor of genetics at the University of Washington.

Bill was proud to be a native Californian. He and his family walked over the newly finished Golden Gate Bridge the day it was opened. He became a midshipman in the US Merchant Marine Corps and served on board ship in 1944-1945 in the Pacific Theater of World War II. In 1944, the family moved back to Lawrence, Kansas where Raymond became a faculty member and director of the respected University of Kansas Natural History Museum. Following his time in the service, Bill enrolled at the University of Kansas and graduated in 1948 with his BSCE. After a short tenure at SOHIO Pipeline Co, he entered the University of Illinois and received his MS and Ph.D. under the direction of Professor Nathan Newmark.

I first met Bill through his research while I was a practicing engineer in the power industry. Bill and Professor Newmark developed one of the early probability-based design spectra in the early 1970s for the US Nuclear Regulatory Commission. The so-called Newmark-Hall Spectra (Regulatory Guide 1.60) was the straightforward way one could get a good estimate of spectral demands based on a ground motion’s key parameters. With the few recorded ground motions available in the early ’70s and limited computational power, how do you provide a robust methodology to estimate the spectral demands for use in nuclear facility analysis for earthquake? I thought this approach was clever. Very clever.

When I decided to pursue my doctorate, I sought out Bill Hall and called on him unannounced in his office one day in Urbana. It was immediately apparent that he was a gentleman, a very busy gentleman, but was kind and considerate. We talked about what I wanted to do; he listened and the result was that he took a chance on me. A 30-year-old practitioner who wanted to join academia. This conversation began a 40-year friendship that included milestones in both our lives. His becoming a grandfather. His becoming the department head at Illinois. My graduating and embarking on my own academic career. Then later hearing him say how proud he was of me when I became Department Chair at the University of Kansas. High praise from one whose opinion mattered. A lot.

When I think of Bill, I think of someone who always had time to visit, always seemed to be in a good mood and was in a word, centered. He knew who he was and focused on making every day count. His mantra was to keep working and writing each day. Even if it wasn’t always the best calculations or written words, to keep at it and to keep moving forward. He learned this from his very accomplished parents, his brothers, and the many faculty members he had as a student. The lessons stuck with him and he more than paid back all those who helped make him who he was. His students and colleagues all got to see Bill Hall’s genius for doing many, many tasks yet always having time to visit with a prospective student. We are his legacy and some are all the better for being fortunate enough to be one of Bill’s students. Thanks, Bill. Well done.

EERI COVID-19 Update

Published July 1, 2020

As COVID-19 cases and hospitalizations continue to rise, EERI has extended our policy of canceling all in-person events, meetings, and activities until October 1, 2020. We will continue to monitor the latest guidance from the CDC to inform our organizational policies and operations and will keep you abreast of any developments. We’re confident that EERI can remain an important place for virtual connection and remote learning for you as we look ahead to the future beyond COVID-19. Thank you for your support and cooperation during these uncertain and challenging times.


Published March 15, 2020

Due to escalating public health concerns surrounding coronavirus (COVID-19), EERI has decided to cancel all in-person events, meetings, and activities for the remainder of March and April 2020. 

At this time, all in-person activities planned for May and June may remain in a tentative status or be canceled/postponed at the discretion of the EERI chapter, committee, or program. In April, EERI will revisit the extension of this policy for a longer time period and consider further event cancellations based upon the latest information available at that time.

The following scheduled activities have been canceled and sent official notices:

  • EERI Regional Chapter events
  • SESI Classroom Outreach visits
  • Friedman Family Visiting Professionals Program visits
  • Younger Members Committee visits
  • LFE Reconnaissance trips

Any other committees or chapters with questions should contact their staff liaison. EERI student chapters are reminded to follow the policies of their home university.
 
We have had no reports of suspected or confirmed coronavirus cases affecting participants at the 72nd EERI Annual Meeting. If we are notified by health officials of any tested and verified cases of COVID-19 that occurred during the conference timeframe, we will share that information with attendees. 
 
While this evolving public health situation is challenging our normal operations, we are still confident that EERI can remain an important place for virtual connection with colleagues and remote learning. Thank you for your support and cooperation amidst these new and challenging conditions.