Structural Engineering Society of British Columbia

Seminar Downloads and Recordings

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February 24, 2014

Professional Practice Lessons from the Christchurch Earthquake

The Christchurch earthquake has taught several lessons that are particularly relevant to British Columbia with respect to the legal framework, design/building codes, construction standards and seismicity.

The presentation summarizes the impact of earthquakes on buildings and key lessons learnt from three perspectives:
• Technical lessons for structural design engineers.
• Practise lessons for small and large building design consultancies.
• Lessons for the engineering profession in BC.

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Presenter : Dale H. Turkington, B.Ap.Sc., M.E., FIPENZ, CPEng (NZ)

January 22, 2014

Base Isolation

The West Coast of Canada is in a highly seismically-active region known as the "Pacific Ring of Fire". Past earthquakes in this region (New Zealand, Taiwan, Japan, USA, Mexico and Chile) have caused tremendous life losses and property damage. This results to hefty financial burden to the facility owners and cripples their ability to recovery after the earthquake. With high probability of experiencing large intensity earthquakes in Vancouver, it is crucial to building structures to withstand the inevitable earthquake shaking with minimal financial impacts and able to be recovered efficiently. This can be achieved by utilizing innovative structural components and systems, such as base-isolation and added energy dissipation technologies.

Base isolation and energy dissipation devices have been well established in United States, Japan, China and many other earthquake prone countries. However such technology has not been well adopted in Canada. This presentation will highlight the base isolation and energy dissipation technologies.

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Presenter : Dr. Tony Yang, P.Eng., Assistant Professor, UBC Department of Civil Engineering

May 29, 2013

2013 AGM Keynote Presentation: Natural Design

Michael Cook is well known across the world for his significant contribution to designing innovative buildings. Mike is the Chairman and Senior Partner of leading international consulting engineering firm Buro Happold. Especially interested in education, Mike is also Adjunct Professor of Creative Design at the Department of Civil and Environmental Engineering at Imperial College, London.

In his keynote address, Mike gave an overview of four of the many amazing structures he has been involved with in his career. He explained "how it all happened", and gave his insightful perspective on how we should be "making new engineers".

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Presenter: Michael Cook, PhD, CEng, Buro Happold

March 13, 2013

Pitt River Cable-stayed Bridge: Design & Construction

The Pitt River Cable Stayed Bridge was one of the first crucial links to be implemented in the Gateway network. As part of a design-build project, this 506m continuous river bridge included approach spans and a 380m cable-stayed portion with a 190m central span. The 40m wide bridge required a unique stay arrangement of three cable planes. Other design challenges included a continuous lateral system for redistribution of seismic and ship impact loading, a shallow stay-support deck system, a complex response of the 3-plane stay system, and deep foundations. This presentation touched on conceptual development, design-build value engineering considerations, and design and construction considerations. Key features of the structural system were described, such as the stay-supported shallow steel frame units and precast elements used for efficient balanced cantilever construction of the main spans, and the continuous deck diaphragm and link slabs used for the transfer of lateral loads and accommodation of bridge articulation. Observations were made on economy, schedule, and industry trends.

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Presenter : Craig Schaper, P.Eng., C.Eng., MIStructE Senior Bridge Engineer, Associated Engineering (B.C.) Ltd.

February 25, 2013

So You Think You Can Give A Seminar?

Second annual Young Members Group presentation competition. Presentations included in this recording:

"Made in China - Challenges of Working Overseas"
       by Dustin Willms, EIT, Fast + Epp

"Sustainable Concrete made with FRP Scrap Aggregate (FSA)"
      by Emma Slater, EIT, Metro Vancouver

"Seismic Performance of a Six Storey Reinforced Concrete Masonry Building during the Christchurch Earthquake"
      by Jose Centeno, EIT, Ph.D. Candidate, University of British Columbia

"Designing Structures to Resist Progressive Collapse"
       by Victoria Janssens, EIT, Wicke Herfst Maver Structural Engineers

and special guest presentation by Iain Ward, MIStructE, C.Eng., Ausenco:
"Sorry We Don't Have a Crane, But We Do Have 300 People and Some Trees"

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February 20, 2013

Floor Design Spectra Guideline

Floor design spectra are used to design structures or components or evaluate equipment that is located on or within larger structures. Floor design spectra allow practical response spectral design of building components and equipment when multiple time history responses have been developed at various locations throughout a structure. BC Hydro recently developed a practice to formalize the process of calculating floor design spectra to provide a uniform approach for seismic upgrades and designs of its facilities. Considerations in the practice's development include: numbers and characteristics of input time histories; component damping; and the appropriate characterization of uncertainty in the model from which the spectra are generated. The seminar presents methodology used to develop floor spectra and illustrates this using recent examples for both large structures as well as electrical and mechanical equipment.

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Presenter : Andreas J. Felber, Ph.D., P.Eng. Specialist Structural Engineer, Generation Engineering, BC Hydro

November 28, 2012

Conducting Field Reviews

One of the duties of a Structural Engineer is to conduct field reviews to observe the quality and progress of construction on site. This seminar presented practical advice on conducting field reviews and discussed professional requirements and liability for structural engineers when conducting field reviews.

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Presenters: Andy Metten P.Eng. Struct.Eng., Bush, Bohlman & Partners, and Peter Mitchell P.Eng., APEGBC

October 17, 2012

Energy-Efficient Buildings and Passive House

Building codes are changing regarding the energy efficiency of new buildings and renovations. The first one that will have an impact on the work of local structural engineers is the new 2012 VBBL that the City of Vancouver will release early next year. This seminar summarized the upcoming changes and the significant impact that they will have on structural design.

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Presenter: Robert Malczyk, P.Eng, Struct.Eng., Equilibrium Consulting Inc.

May 30, 2012

Noel Natham Memorial Lecture in Structural Engineering:
The Canterbury Earthquakes - Engineering Matters

David Hopkins delivered a compelling presentation on the Canterbury earthquakes. He provided an brief overview of the earthquakes and their impact, and then described some of his experiences in the immediate aftermath of the February 22 earthquake; helping to assess and stabilise some of the tallest buildings. After six weeks in this critical buildings role, David was asked by the Department of Building and Housing to manage investigations into the collapse of four buildings in the February 22 earthquake. He outlined that work, with some detail about the collapse of the CTV Building in which 115 people died. David concluded by sharing some personal observations relating to structural engineering that result from the critical buildings assessment and the DBH investigation.

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Presenter: Dr. David Hopkins, Consulting Engineer, Wellington, New Zealand

March 8, 2012

2012 AGM Keynote Presentation: Burj Khalifa

Bill Baker delivered the gripping keynote presentation at the 2012 SEABC Annual General Meeting.

At 828 m high, the Burj Khalifa is the world’s tallest building, a testament to the world’s highest aspirations. Its design and construction pushed conventional technologies to record breaking heights.

IStructE Gold Medallist Bill Baker is recognized as one of the world’s leading structural designers. He is Partner in Charge of Structural and Civil Engineering for SOM’s Chicago and London offices and has a background in the design of landmark structures.

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Presenter: Bill Baker, SE, FASCE, FIStructE, Skidmore, Owings & Merrill

February 22, 2012

Oakland Bay Bridge Construction Engineering

The signature span of the new San Francisco Oakland Bay Bridge will be the Self-Anchored Suspension span (SAS), the longest "self-anchored" suspension bridge in the world. A "self-anchored" bridge requires the horizontal component of the suspension cable force to be resisted by compression in the deck, so the deck must be supported in position by falsework until the cable is in place. The single main tower comprises four individual steel legs constructed in four lifts, requiring a separate, 163m tall, temporary steel erection tower to lift the components into place. Structural and geotechnical design for the $350M temporary works, which included approximately 25,000 tonnes of structural steel, was undertaken by Klohn Crippen Berger Ltd here in Vancouver. The presentation provided an overview of the interesting engineering challenges encountered by the designers.

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Presenter: Bruce Hamersley, P.Eng., Klohn Crippen Berger Ltd.

January 18, 2012

Next Generation Performance-Based Earthquake Engineering: ATC-58 Approach

Next generation performance-based earthquake engineering aims to quantify performance of facilities using metrics that are of immediate use to both engineers and stakeholders. The method quantifies the seismic risk for the facility in terms of financial loss, down time and casualties, and consistently accounts for the uncertainties in the seismic hazard, structural response, resulting damage, and repair costs. The outcome will allow the building owners to make an informed riskbased management decision, and allow structural engineers to design new and innovative structural systems more efficiently and cost effectively.

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Presenter: Tony Yang, PhD, UBC Department of Civil Engineering

December 5, 2011

EERI Distinguished Lecture: "Dynamics of Urban Earthquake Risk - A Vancouver Case Study"

This presentation explored the question of how urban seismic risk is changing over time. Are our cities becoming safer, due to advances in earthquake engineering? Or is risk growing as a result of societal factors such as population expansion and urban development?

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Presenter: Stephanie E. Chang, Professor, University of British Columbia

November 30, 2011

SECBC Seminar: An Introduction to Blast Resistant Design

Presented by Rainer Herzinger, Ph.D., P.Eng., Stantec Consulting Ltd.
The presentation introduced participants to the characteristics of a blast wave and its effect on building structures, discussed design approaches.

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July 27, 2011

SEABC Taskforce on Guardrails - Design Practice and Construction Issues

For many years guards (guardrails) have had problems to achieve code compliance. Problems have typically ranged from lack of proper design to poor construction, and lack of coordination or understanding of responsibilities between the various design and construction professionals involved. Issues frequently exist with aluminum railings, glass guards, and connection of guardrail members to the supporting base building structure. This seminar outlined the issues identified by the SEABC Taskforce on Guardrails, and present practical and effective solutions for some of these issues.

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Presenter: Robert Jirava, P.Eng., Struct. Eng., RDJ Structural Designs Ltd.

May 31, 2011

Christchurch Earthquake and Lessons for BC

UBC Seismic expert Dr. Ken Elwood was in Christchurch New Zealand when the 6.3 earthquake rocked the city and led to 184 confirmed deaths and an estimated $20 billion (NZ) in damage. The presenters shared their observations from experiencing the earthquake first-hand and assisting with building assessments in the immediate aftermath, and presented important lessons for Vancouver and Canada.

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Presenter: Dr. Ken Elwood (UBC) & Mr. Patrick Ryan (City of Vancouver).

Acknowledgements

This seminar was presented by the UBC Department of Civil Engineering, Faculty of Applied Science, and sponsored by SEABC.

April 20, 2011

Fibre Reinforced Polymer (FRP) - Design Fundamentals, Considerations, and Applications

Fibre reinforced polymer (FRP), though commonly used in the aero-space, automotive and marine industries, is still a relatively new design material for many Structural Engineers. This presentation covered the fundamentals of design, applications for repair and retrofit, applicable codes and guidelines, current research and testing, FRP specific drawing specifications and construction considerations. The presentation will also include sample projects utilizing FRP in their design.

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Presenter: John Sherstobitoff, P.Eng., Ausenco Sandwell.

September 17 & 18, 2010

Short Course on Displacement-Based Seismic Design

This 1½ day short course introduced participants to displacement-based seismic design and demonstrated how it can be implemented in the design office as a simple and rational alternative to current prescriptive methods of seismic design. The course showed that serious conceptual problems with current force-based seismic design are resolved when the design is based on displacement considerations.

The course followed the book, Displacement-Based Seismic Design of Structures, by MJN Priestley, GM Calvi, and MJ Kowalsky (ISBN: 88-6198-000-6)

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Presenters:

Nigel Priestley, PhD, BE, Professor Emeritus of Structural Engineering University of California, San Diego, co-Director Emeritus of the European Graduate School for Earthquake Engineering in Italy, and Principal of the consulting firm Priestley Structural Engineering.

Mervyn Kowalsky, PhD, PE, Professor of Structural Engineering in the Department of Civil, Construction, and Environmental Engineering at North Carolina State University.

June 25 & 26, 2010

Two-Day Seminar on Soil-Structure Interaction

This seminar offered a guided tour through the various ways of accounting for soil-structure interaction (SSI) from analysis of the total soil-structure system to analysis of various approximate models of the system. The focus was on buildings and bridges, with both shallow and deep foundations. The seminar highlighted the benefits of including SSI analysis, from the perspective of improved understanding of actual system behaviour as well as improved efficiencies in structural designs that can be achieved.

When analysis of the total soil-structure system is carried out, the effects of soil-structure interaction (SSI) are implicitly included in the analysis and reflected in the results. However this type of analysis, while feasible, is rarely practical in practice because the structural analysis programs used by structural engineers cannot handle the nonlinear soil continuum directly. Modeling the effects of soil-structure interaction for practical design means developing reliable simple models that include the flexibility of the soil and foundation system; the dissipation of energy from the soil-structure system through radiation and hysteretic soil damping; and the modification of the ground motion transmitted to the structure by soil-structure interaction.

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Presenters:

Donald Anderson, Ph.D., P.Eng.
Professor Emeritus of Civil Engineering
University of British Columbia, Vancouver, BC

Upul Atukorala, PhD, PEng.
Principal
Golder Associates Ltd., Burnaby, BC

Craig Comartin, S.E.
President
CDComartin Inc., Stockton, California

Ron DeVall, Ph.D., P.Eng
Senior Consultant-Structural Engineering
Read Jones Christoffersen Ltd., Vancouver, BC

Liam Finn, Ph.D.,P.Eng.
Professor Emeritus of Civil Engineering
University of British Columbia, Vancouver, BC

Blair Gohl, PhD., P.Eng
Senior Associate
AMEC Earth and Environmental, Burnaby, BC

Bruce Hamersley, P.Eng.
Principal
Klohn Crippen Berger Ltd., Vancouver, BC

Ernest Naesgaard, P.Eng.
Principal
Naesgaard Geotechnical Ltd., Bowen Island, BC

John Sherstobitoff, P.Eng.
Manager, Structural
Ausenco Sandwell, Vancouver, BC

Anoosh Shamsabadi, Ph.D, P.E.
Senior Bridge Engineer
California Department of Transportation, Sacramento, California

Carlos Ventura, Ph.D., P.E., P.Eng.
Professor of Civil Engineering
University of British Columbia, Vancouver, BC

Adrian Wightman, M.Sc., P.Eng.
Principal Consultant
BGC Engineering Inc., Vancouver, BC

Acknowledgements:

This seminar was presented by SEABC and co-sponsored by UBC Department of Civil Engineering and The Canadian Society for Civil Engineering Vancouver Section.

February 16, 2011

Sustainable Structures

Designing a sustainable structure is more than simply scoring high on a LEED or Living Building Challenge scorecard. It is about using common sense and doing the right thing. This presentation will look at how LEED influences the structural design of modern day buildings and offer recommendations on how the rating system could be improved to better respond to the realities of modern day design in British Columbia. The presentation will also show recent examples of local building structures to illustrate that sustainable structural design can be achieved with or without LEED.

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Presenter: Duane Palibroda P.Eng., Struct. Eng., LEED AP, Fast + Epp

November 29, 2010

Seminar: Rocking, Fusing, Self-Centering, and Multi-Hazard:
Some Research and some Questions

Strategies to achieve more resilient structural systems have included frame rocking, the use of structural fuses, and self-centering post-tensioned frames. An increased interest in multi-hazard strategies has also emerged in recent years. This presentation reviews selected recent research conducted at the University at Buffalo on those topics. This includes: (1) a general formulation for structural fuse systems, validate by shake-table testing of a 3-story steel frame having replaceable fuses; (2) A fuse concept for tall dual columns, verified experimentally using cyclic inelastic testing of a 30' tall specimen; (3) A structural braced-frame rocking strategy, verified using shake table testing of a 30' tall 4-legged braced tower; (4) A self-centering steel plate shear wall concept under development, and; (5) A composite concrete-filled steel tube concept for multi-hazard performance. For each of these systems, potential advantages are highlighted, along with some general challenges for that will be faced for their codification.

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Presenter

Dr. Michel Bruneau, Ph.D., P.Eng. (Professor, Department of Civil, Structural and Environmental Engineering, University at Buffalo)

Acknowledgements

This seminar was hosted by the Department of Civil Engineering, University of British Columbia.

November 15, 2010

UBC Special Guest Seminar: Progress Engendered by Collapses of Record Setting Structures: Malpasset Dam, World Trade Center Towers and KB Bridge in Palau

When built, these were the tallest and slenderest arch dam, the tallest building, and the prestressed box girder of world-record span. The mechanisms of collapse of these structures are clarified. The size effect is shown to have been an important factor in the 1959 failure of the Malpasset Dam. Second, the disputed causes of the twin WTC towers collapse in New York on 9/11/01 are discussed. Third, the 1996 collapse of the Koror-Babeldaob prestress concrete box girder in Palau, with a 241 m span, is analyzed. Some other shear failures of RC structures in which the size effect was a likely a factor are briefly pointed out. The lessons from these regrettable catastrophes are bound to advance the structural engineering profession.

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Presenter

Dr. ZdenekP. Bazant, Ph.D., Northwestern University

Acknowledgements

This seminar was hosted by the Department of Civil Engineering, University of British Columbia.

October 25, 2010

Seminar: Changes in the Steel Standard S16-09

A new edition of S16 will come into effect with the upcoming building code revisions NBCC 2010 and BCBC 2011. The new steel standard is S16-09 and is contained in the recently released tenth edition of the CISC Handbook of Steel Construction along with the updated commentary to S16. The seminar will cover the significant changes and a clause-by-clause summary of the changes will be made available to attendees.

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Presenter

Andy Metten, P.Eng, Struct. Eng. (Partner: Bush, Bohlman & Partners)

Acknowledgements

This seminar was sponsored in part by the Canadian Institute of Steel Construction.

October 5, 2009

EERI Distinguished Lecture

The State of the Practice of Seismic Hazard Analysis: "From the Good to the Bad", by Dr. Norman A. Abrahamson, Senior Engineering Seismologist, Pacific Gas and Electric Company, San Francisco

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Abstract

The presentation reviewed the state of the practice of seismic hazard analysis and development of design time histories. The practice of seismic hazard analysis varies tremendously from poor to very good. The large variability in practice is not simply a reflection of project budgets; a large variation exists for similar scale projects. Although the basic methodology for seismic hazard analysis has been well established, there remains widespread misunderstanding of the basic concepts that contribute to poor practice. Some of the most common misunderstandings and common aspects of bad practice will be described. The aspects of good practice that should be expected for low-end and high-end studies will be summarized.

For the development of design time histories, the state of the practice is more variable than for seismic hazard analysis. Key aspects such as how representative time histories are selected and how they are modified (by scaling or by spectral matching) vary tremendously based on the opinions of the project participants or reviewers. In most cases, these opinions are based comfortable level rather than objective technical criteria. Examples showing the large range of quality of current practice will be shown. The state of the practice for developing time histories will not improve until objective quantitative criteria are developed to judge the appropriateness of non-stationary aspects of the proposed time histories for the particular project.

Presenter

Dr. Abrahamson is a Senior Engineering Seismologist in the Geosciences Department at the Pacific Gas and Electric Company in San Francisco. He specializes in ground motion assessments and seismic hazard analysis of important engineered structures and systems, including dams, bridges, nuclear power plants, nuclear waste repositories, rail lines, electric substations, water and gas pipelines, hospitals and office buildings. His expertise includes the treatment of uncertainty, the use of numerical simulations of ground motion, and strong motion instrumentation. Dr. Abrahamson was named the 2009 Distinguished Lecturer by the Earthquake Engineering Research Institute.

Acknowledgements

UBC EERI Dr. Abrahamson’s visit was made possible by the Earthquake Engineering Research Institute Distinguished Lecture Program.

March 19, 2008

Seminar

Lecture was joint sponsored by SEABC, the UBC EERI Student Chapter, and the EERI Friedman Family Visiting Professional Program
Topic: EERI Freidman Family Visiting Professional Lecture
Presenter: James Malley
Venue: Vancouver Public Library, Downtown, Alice McKay Room
Time: 7:00PM. Refreshments will be served.

January 23, 2008

Seminar

Changes to the ASCE 7 Standard
Presenter: John Hooper, Magnusson Klemencic Associates

Nov 14, 2007

VSEGS Presentation

RAV Canada Line
Presented by Meirec Preece (MMM Group)

Oct 24, 2007

VSEGS Presentation

Professional Negligence
Presented by Jeremy Lovell (Bull, Housser, & Tupper)

2005

DSE Presentation

CSA A23.3 2004 Highlight of Changes

Nov 22, 2004

CISC Dinner Meeting on Steel Deck Research and Design Application

Influence of Seismic Design Requirements and Building Period on the Design of Low-Rise Steel Buildings
Presented by R Tremblay and CA Rogers, Ecole Polytechnique

Recent Field Experience with Steel Deck Installations
Presented by Gerry Weiler, P.Eng.

June 7, 2001

SECBC Seminar: Developments in NBCC Part 4

National Bulding Code 2003
Presented by Russ Riffell, P. Eng. - Chair, Standing Committee on Structural Design,
Part 4 of the National Building Code of Canada

Proposed Revised Earthquake Design
Provisions from CANCEE
Presented by Ron DeVall, P.Eng.

Load Combinations for Strength and Stability

May 2000

SECBC Seminar Presentations

Developments in Construction Materials
Presented by Phil T. Seabrook, P. Eng. - Levelton Engineering Ltd.

Seismic Hazard Abatement Program

National Building Code: Improvements for 2003
Presented by Russ Riffell, P.Eng. - Levelton Engineering Ltd.

Chapter 23: Tilt-Up Wall Panels

2000

DSE Presentation

Sustainability in Construction Use of Fly Ash as a Cement Replacement
Presented by P.T. Seabrook, P.Eng. and Kevin Campbell, P.Eng. - Levelton Engineering Ltd.

1999

DSE Presentations

Connections Methods for Timber Engineering
Presented by Borg Madsen - Timber Engineering Ltd.

Dynamic Analysis with Emphasis on Wind and Earthquake Loads
Presented by Ed Wilson - Professor Emeritus of Structural Engineering University of California, Berkeley

Seismic Response of Low-rise Steel Frame Buildings
Presented by Carlos E. Ventura, P.Eng. and Mark Bakhtavar - Department of Civil Engineering, University of British Columbia

Ductile Fuses for HSS Seismic Bracing of Low-rise Buildings
Presented by Peter Timler - CISC/Sandwell and Helmut Prion - UBC