TITLE: “From Certainty to Uncertainty in 64 Years”
The Speaker, a graduate from the UofT in the class of 1956, was exposed at the outset of his career to a program that presented engineering practice as having a high degree of certainty. Over a duration of 64 years devoted to teaching,research and professional practice in the field of Geotechnical Engineering, he has become increasingly aware of uncertainty in professional practice. Key milestones associated with this odyssey and the management of uncertainty will be discussed.
Dr. Morgenstern, Distinguished University Professor Emeritus at the University of Alberta, is an international authority on geotechnical engineering and a highly sought-after consultant. As an educator, researcher and practitioner, the international scope of his experience spans over 40 countries on 6 continents. Among his recognitions, he is an elected a Fellow of the Royal Society of Canada and the Canadian Academy of Engineering. He is also a Foreign Associate of the US National Academy of Engineering, a Foreign Member of the Royal Academy of Engineering (UK) and a Foreign Fellow of the National Academy of Engineering of India. He has been inducted into the Alberta Order of Excellence and the Order of Canada for his outstanding achievements in and life-long contributions to geotechnical engineering. He has received honorary degrees from the University of Toronto, Queen’s University and the University of Alberta. Moreover, he is an Honorary Professor at Zhejiang University, PRC.
Presented by U of T Earthquake Engineering Research Institute (UT-EERI) Student Chapter
Talk by David Friedman
The Practice of Structural Engineering Today & 3 Unique Structural Engineering Projects
Monday, March 9, 2020
1:30 p.m. – 2:30 p.m.
35 St. George Street
University of Toronto
Abstract The practicing structural engineer today must not only have a broad understanding of not just structural engineering, but must be knowledgeable about architecture, M/E/P systems, construction delivery methodologies, and the construction process. The project’s budget, the
selected performance and design criteria, the architectural form, and the operating systems all affect the selection of the appropriate structural materials and lateral force resisting system. Then the analysis must get translated into a design, and the design must clearly and carefully be delineated into construction documents including plans, details, sections and technical specifications, with appropriate attention to sequencing, phasing and constructability. This all gives rise to the notion of today’s structural engineer as a “Master Builder,” one who can articulate their way through a complex labyrinth of form finding, criteria setting, risk evaluation, design and documentation, and construction (and hopefully not litigation).
DAVID A. FRIEDMAN, SE
Senior Principal & Chairman of the Board
David Friedman is a Senior Principal at Forell/Elsesser, and is licensed in California. He has been with the firm since 1980, has over 43 years of
structural engineering experience, and has served as Project Principal on a variety of new design and retrofit projects including community and civic facilities, university complexes, research laboratories and transportation facilities. David served as the firm’s President and CEO from 1995 to 2007 and chaired the Board of Directors from 2000 to 2017.
With a specialty in seismic engineering and retrofitting of existing structures, particularly those with historic designation, David has solved
numerous structural and earthquake engineering challenges during his career with Forell/Elsesser Engineers. His experience includes many of the firm’s signature projects including the base isolation retrofits of San Francisco City Hall and the Asian Art Museum, the adaptive reuse and
retrofit for the San Francisco Conservatory of Music, and the seismic safety corrections and remodeling of UC Berkeley’s California Memorial Stadium.
David is devoted to world-wide seismic risk reduction and is the current President of the Earthquake Engineering Research Institute, dedicated to learning and disseminating the lessons learned from earthquakes around the world. He is also deeply involved in many civic, philanthropic and notfor-profit Boards including The San Francisco Foundation, SPUR, UC Berkeley Foundation and the Jewish Home of San Francisco.
• UCB’s California Memorial Stadium
• UCB’s Student Athlete High Performance Center
• Taube-Koret Campus for Jewish Life
• San Francisco Jewish Community Center
• San Francisco Conservatory of Music
• Asian Art Museum of San Francisco
• San Francisco City Hall
• Jewish Home of San Francisco, Renovation & Expansion
Total Years Experience
UC Berkeley, M.S., Civil Engineering
California, Civil Engineer
California, Structural Engineer
EERI Member of the Board of
Directors & President
Jewish Home of San Francisco,
Board of Directors, Former Chair
of Board of Trustees, JSLG Chair
SPUR Emeritus, Board of
Directors, & Chair
SEAONC’s 2012 H.J. Brunnier
Lifetime Achievement Award
UC Berkeley CEE Academy of
TITLE: SkyDome Open and Shut Case
VENUE AND TIME – TBD
Silvio Baldassarra, Chairman of NORR Architects & Engineers Limited
B.Arch., OAA, AAA, MAIBC, AANB, AAPEI, MAA, FRAIC BIo
Silvio Baldassarra is an Architect with 45 years of experience in design and management of large complex projects in commercial, government, hospitality, sports and transportation sectors. He was the project architect responsible for the retractable roof of SkyDome (Rogers Centre) in Toronto when he started with NORR in 1986 and today is Chairman of NORR Architects & Engineers Limited. Abstract
“Open the 11,000 ton retractable roof by moving three roof panels in 20 minutes”. On June 3, 1989 the world’s first retractable roof, multi-use stadium, SkyDome (Rogers Centre) opened in Toronto. It was a Canadian architectural and engineering innovation, designed by architect, Rodrick Robbie and engineer, Mike Allen. As, the roof architect I spent 3 years working with the two visionaries to develop the roof design including; structure, movement systems, seals, catwalks and stadium lighting.
Thirty one years later, I will share our story of the design/build solution of the first and most successful retractable roof innovation in the world.
The retractable roof of SkyDome was the first of its kind in the world. Four separate roof panels weighing 11,000 tons and 8 acres in area. Three of the panels are required to move and stack on the one positioned in the north end to expose 100% of the playing field and 91% of the stadium seats. The building technology is adapted from fail safe railway technology. The adaption is innovative when moving 11,000 tons of roof. The design/build team worked through solution after solution including many failures through testing in labs including University of Toronto under the direction of Professor Jeffrey Packer, before arriving at the final technology solution for SkyDome.
The presentation will start with the competition criteria which was simple “open and close the roof in 20 minutes”. The concept proposed during the design competition was not fully engineered and was defined in concept only as 4 panels, three of which moved over the fourth. The presentation will describe the 3 years that followed through the engineered design/build process of solutions for:
- Building support structure for the roof panels
- Roof structure connection to the building
- Roof movement systems analyzed and final chosen
- Roof seals extreme movement laterally and horizontally and seals invented for SkyDome
- -Maintenance of roof movement systems in the roof and on the building support
- Stadium lighting systems which are uniquely fixed to the building sculpted under the retractable roof.
Silvio Baldassarra is an innovative design architect recognized by his unique architecture/engineering approach to large-scale complex projects during his 45-year career. His experience spans all sectors including aviation, commercial, education, institutional, justice, sports and transportation. Today, he is the Chairman of NORR and continues to lead, design and manage major projects and to build new project sectors. He is regularly sought after as an architectural guest speaker.
Silvio’s career has included the following major projects which he strategically won, led and managed including:
- New Toronto Courthouse, Toronto
- Union Station Revitalization Project, Toronto
- Wellington Rehabilitation Project, Ottawa
- Sir John A. Macdonald Building, Ottawa
- St. Mark’s Coptic Cathedral, Markham
- Calgary Courts Centre, Calgary
- Canadian Plaza at the Peace Bridge, Fort Erie
- Terminal 2 Redevelopment, Toronto Pearson International Airport, Toronto
- John Sopinka Courthouse, Hamilton
- SkyDome (now Rogers Centre), Toronto
Professionally, Silvio was recognized by his peers in 2010, becoming a Fellow of the Royal Architectural Institute of Canada. In 2017, he was the Innovative Architecture Award recipient in the Premio Laziale dell`Anno 2017 by the Lazio Federation of Ontario. In 2019, Silvio was awarded the Ordine al Merito by the National Congress of Italian Canadians in recognition of outstanding achievement in architecture. Silvio is a registered Architect in Ontario and 5 other Canadian Provinces. Personally, he is a Knight of Columbus and holds a 4th degree in the Blessed Trinity Parish in Toronto.
TITLE: Trouble Ahead, Trouble Behind: Acid Mine Drainage and Climate Change in the Rocky Mountains
Diane McKinght, University of Colorado
Diane M. McKnight is a Professor in the Department of Civil, Environmental and Architectural Engineering, a member of the Environmental Engineering program faculty and a Fellow of the Institute of Arctic and Alpine Research at the University of Colorado. Her research focuses on the coupling of hydrology and water quality in streams and lakes, and the consequences for aquatic ecosystems and water supplies. She began her career as a research hydrologist with the U.S. Geological Survey, studying the biogeochemistry of lakes in the blast zone of Mt. St. Helens and acid mine drainage streams and pristine alpine lakes in the Rocky Mountains. She participated in designing ecological aspects of the National Water Quality Assessment Program of the USGS. Since 1992, she has conducted research on stream ecosystems as part of the McMurdo Dry Valleys Long-Term Ecological Research (MCM-LTER) project in Antarctica. She has been President of the American Society of Limnology and Oceanography and editor of Journal of Geophysical Research-Biogeosciences. She served as the Chair of the Editorial Committee for the LTER Schoolyard Children’s Book Series and authored the second book in the series. She is a fellow of the American Geophysical Union, a member of the National Academy of Engineering and received the John Dalton Award from the European Geophysical Union in 2015.
In the Rocky Mountain watersheds, weathering of disseminated pyrite in the country rock and in mining workings generates acidic, metal-enriched water that drains into streams and rivers. This overall process is referred to as acid rock drainage (ARD). ARD is a long-term and pervasive environmental problem in the Rocky Mountains and the Sierras, which provide water supply for communities and agriculture throughout the south western US. Contamination has not abated since the mining boom ended about 70 years ago, largely because these contaminants are continuously generated from the exposure to oxygen of pyrite in the mine workings and tailings. Typically these streams have high dissolved concentrations of toxic metals, such as Zn, Cu, Cd and Pb, and their streambeds are covered with iron and aluminum oxides. These streams and rivers support species-poor aquatic ecosystems, and fish are typically absent. A study in an ARD stream system that drains into Dillon Reservoir, a water supply for Denver, Colorado, has found that acidity and concentrations of metals and rare earth elements have been steadily increasing in the summer and fall over the past several decades. Another trend is that mountain resorts have been pursuing a “four seasons resort” approach to adapt to changing climate, and less reliable winter snowpack for skiing. ARD thwarts these plans by constraining the use of stream water for snowmaking and impacting summer recreation, such as fishing and rafting. In addition to general environmental concerns, this situation has focused attention on remediation of abandoned mines which is inherently challenging, as illustrated by the difficulties in remediating the Gold King Mine near Durango, CO. One issue for state and federal agencies and watershed stakeholders’ groups is determining which of the many abandoned mines in a catchment are the main ARD sources, and which of these are suitable for remediation. Addressing the ARD problem in mountain catchments will require a convergent research approach that integrates understanding of hydrology, water quality and aquatic ecosystem processes within a regulatory and water resources framework.
Research focuses on interactions between hydrologic, chemical and biological processes in controlling the dynamics in aquatic ecosystems. This research is carried out through field-scale experiments, modeling, and laboratory characterization of natural substrates.
- DATE SUBJECT TO CHANGE
- VENUE – TBD
Jenna Davis, Stanford University
Jennifer (“Jenna”) Davis is an Associate Professor in the Department of Civil and Environmental Engineering and the Higgins-Magid Senior Fellow at the Woods Institute for the Environment, both of Stanford University. She also heads the Stanford Program on Water, Health & Development. Professor Davis’ research and teaching is focused at the interface of engineered water supply and waste management systems and their users, particularly in developing countries. She has conducted field research in more than 20 countries, including most recently Zambia, Bangladesh, and Uganda.