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Aired Webinar Presenter Length Description Recording Presentation
9/13/22 Extended Joint Floors: Concepts, Systems & Material Choices Chris Tull - CRT Consulting 1 Hour

This presentation provides an overview of extended joint slabs primarily…
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This presentation provides an overview of extended joint slabs primarily used on industrial warehouse floors. An overview of the stresses that must be controlled in order to extend joints will be discussed. Two case studies of extended joints will be presented; one of which is the Twin Cities metro area.

Learning Objectives:
1.    Address the reasons why joints are extended.
2.    Explain how shrinkage and thermal stresses have an impact on joint spacing.
3.    Review the families of technology associated with extended joints.
4.    Define joint widening and how this can impact slab performance.

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2/23/21 Avoiding Damage, Distress, and Disappointment in Concrete Structures Michael W. Lee (Principal at Wiss, Janney, Elstner Associates) 1 Hour

This presentation reviews failures, damages, and other incidences of poo…
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This presentation reviews failures, damages, and other incidences of poor performance in concrete structures that have served to shape today's building codes and the standard of care for the profession. Examples range from well-documented, high-profile collapses to lesser known but similarly influential structural and serviceability problems. Case histories will include discussion of excessive cracking, the cause of such distress, and mitigation measures. The case histories will illustrate how small details can often mean the difference between success and disappointment; and how codes have evolved to reduce the risk of future failures.

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8/10/21 Parking Structures: Common Problems and Best Practices Michael W. Lee (Principal at Wiss, Janney, Elstner Associates) 1 Hour

This presentation reviews strength and serviceability problems in concre…
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This presentation reviews strength and serviceability problems in concrete parking structures. The effects of environmental exposure, vehicular loading, and deterioration will be discussed with an emphasis on key differences between buildings, parking structures, and bridges. Case histories will be provided to illustrate common problems, failures, and remediation methods. Precast concrete and cast-in-place systems will be discussed, including problems that occurred during construction. The presentation will include examples of changes that have occurred in the industry to enhance safety and long-term performance.

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7/14/20 Supplementary Cementitious Materials Dr. Larry Sutter 1 Hour

This presentation will cover the basics of common supplementary material…
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This presentation will cover the basics of common supplementary materials used in concrete. Common applications, comparisons of their properties in plastic and hardened concrete, as well as the outlook of their future use will all be covered in the presentation.

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1/28/21 Pumping Air Entrained Concrete and the Super Air Meter Tyler Ley Ph.D., P.E. - Professor at Oklahoma State University 1 Hour

This presentation will discuss changes in the volume of air entrained co…
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This presentation will discuss changes in the volume of air entrained concrete in pumped concrete. The work shows that during pumping the air volume will decrease and if measured immediately after pumping will be lower than what is found in the final concrete. These findings are supported by hardened air void analysis, freeze thaw tests, and measurement of the air void volume and spacing over time in the fresh concrete with the Super Air Meter. The presentation makes recommendations for modifications to the current testing specifications based on the findings.

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5/11/21 Alkali-Silica Reaction in Concrete: Prevention, Test Methods and Standards Jason H. Ideker, PhD (Professor, Oregon State University) 1 Hour

This presentation will focus on alkali-silica reaction (ASR) in concrete…
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This presentation will focus on alkali-silica reaction (ASR) in concrete.  A brief background of the reaction mechanisms and ways to prevent the reaction will be covered.  The reliability of standard test methods, within the context of current standards (ASTM C1778 and AASHTO R80) will be highlighted. In addition, several current research projects and international efforts in the area will be highlighted. 

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1/5/22 Best of Decorative Concrete 2021 – Ideas for Including Decorative Concrete in Design Chris Sullivan (The Fenix Group) 1 Hour

This presentation will include an overview of the American Society of Co…
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This presentation will include an overview of the American Society of Concrete Contractors award winning decorative concrete projects across all the major product categories highlighting how concrete can be strong and beautiful. Using the award-winning projects as examples, the presenter will illustrate how various types of concrete materials and finishes can be used across a wide scope of projects. The presenter will explain unique ways in which decorative concrete can be used to enhance projects – providing increased value and aesthetic appeal.

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8/3/22 Compressive Strength Failures: Causes, Evaluation and Resolution Alfred Gardiner, PE (Braun Intertec) and Dan Vruno, PE (American Engineering Testing 1 Hour

This presentation will provide information about what is typically done …
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This presentation will provide information about what is typically done when compressive strength results are less than the design strength. The presentation will cover: 1) The reasons for the low strength 2) How low strength is typically evaluated 3) What resolutions have they experienced

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4/7/21 ICF Detailing - Lessons Learned M Laverdure and A Wilson (DSGW Architects) 1 Hour

This session will review a few recent projects that were done completely…
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This session will review a few recent projects that were done completely in Insulated Concrete Forms and discuss some of the lessons learned when it comes to detailing.   From sub-grade installation to coordinating metal joist connections to exterior options, this presentation will illustrate some good options for you own ICF project.  Discussion about the ability for ICF to be a part of a Net Zero solution will also be a part of the presentation.

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8/4/21 How Keeping Your Coffee Hot and Your Beverages Cold Can Help You Understand Insulated Concrete Forms Stephen M. Williams, AIA, NCARB from Design West Architects 1 Hour

This webinar will explore the use of Insulated Concrete Forms as a viabl…
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This webinar will explore the use of Insulated Concrete Forms as a viable and enduring building system.  The webinar will explain the many benefits, economies, and attributes of Insulated Concrete Forms.  The presenter will share lessons he has learned, details for implementation, things to avoid, and things to consider.  The presenter will describe how Insulated Concrete Forms can be implemented into the design of net-zero energy buildings.  Finally, a case study will help illustrate the benefits and properties of a thermal mass/thermal reservoir. 

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9/2/20 Net Zero, ICF Design for Rural/Tribal Projects Michael Laverdure, AICAE, AIA, NCARB, LEED AP (DSGW Architects) 1 Hour

This webinar will outline the benefits of using Insulated Concrete Forms…
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This webinar will outline the benefits of using Insulated Concrete Forms (ICFs) in construction, especially in regard to Rural and Tribal projects.  ICFs are a key component in DSGW’s strategy to design Net Zero projects.  This presentation will show examples of ICF and Net Zero design, in particular the Fort Totten Alternative CTE School, the country’s first Net Zero school on Tribal lands in North America.  

The 12,500 square foot, $3.8 million net zero Fort Totten Alternative CTE School was designed to produce more energy than it consumes while ensuring to meet other standards common when designing a net zero facility. There are other net zero schools in the United States, but this new school is the first to be built on tribal land and the first in North Dakota.

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11/9/21 Formwork Considerations for Building Design Ryan Gregory (Ceco Concrete Construction) 1 Hour

This webinar will provide a general overview of common horizontal formin…
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This webinar will provide a general overview of common horizontal forming systems in use today. We will also discuss some project specific factors that drive the system selection process as well as review examples of building design factors affecting constructability and economy.

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5/25/22 Ultra High Performance Concrete (UHPC) – Design and Application Travis Konda (Senior Technical Advisor, HNTB) and Mario Ratnaraj (Bridge Engineer, HNTB) 1 Hour

Ultra High Performance Concrete (UPHC) describes a class of concrete mat…
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Ultra High Performance Concrete (UPHC) describes a class of concrete material with a unique set of properties including: Strengths of 21,000 ksi plus, high ductility, low permeability and rapid strength gain. With these unique material properties, UHPC facilitates short development lengths, thin overlays and the potential for further development in optimized prestress girders for longer spans with less material. UHPC continues to play an important role in Accelerated Bridge Construction serving as the connecting material between precast elements allowing for small joints with short lap lengths while obtaining full connectivity between the elements. This presentation will introduce the audience to UHPC, the basic material properties, applications and lessons learned.

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2/2/22 Economic Outlook for 2022 Ron Wirtz (Regional Outreach Director - Federal Reserve Bank of Minneapolis) 1 Hour

Using recent data and ongoing surveys by the Minneapolis Fed, Ron Wirtz …
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Using recent data and ongoing surveys by the Minneapolis Fed, Ron Wirtz (Regionial Outreach Director at the Federal Reserve Bank of Minneapolis) will discuss the speed and breadth of recovery in the construction sector and broader Minnesota economy, and role of labor force on economic growth going forward. Using an interactive survey, Ron will also gauge sentiment among event attendees regarding recent business activity, hiring demand, labor and wage trends, and the short-term economic outlook.

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7/22/21 Non-Destructive Testing for Assessment of Concrete Structures Alfred Gardiner, PE (Braun Intertec) 1 Hour

We live in a constructed world and our lives and livelihoods are inextri…
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We live in a constructed world and our lives and livelihoods are inextricably linked to the proper function of our infrastructure and machinery. For this to be safely possible, we must have confidence in the technologies we rely on. Nondestructive testing provides that confidence.  To make smart choices, it’s important to have a sound understanding of the purpose, applications, requirements, and different methods of nondestructive testing. This presentation is intended to serve as an overview of various nondestructive testing applications as they are used in the field.

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4/22/21 Mass Concrete – How Big is Big? Robert Howell, P.E. (Professional Development Program Engineer, American Concrete Institute) 1 Hour

What is mass concrete? ACI 207.1R defines mass concrete as any volume of…
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What is mass concrete? ACI 207.1R defines mass concrete as any volume of concrete with dimensions large enough to require that measures be taken to cope with the generation of heat from hydration of the cement and attendant volume change to minimize cracking. But how does one predict whether mass concrete problems will occur and what steps should be taken? This presentation will discuss how to identify mass concrete, ACI 301 requirements pertaining to it, and good construction practices.

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11/18/21 Ethics - Why Do Good People Do Bad Things? David Schultz (Hamline University) 2 Hours

Why do good people and organizations act unethically? Architects and eng…
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Why do good people and organizations act unethically? Architects and engineers may confront ethical dilemmas in many forms during their professional practice, especially in the public arena. Many think that only unethical people do bad things, and that ethical people generally do not do bad things. However, the reality is that is often not the case, and this presentation will discuss why good or ethical people often act unethically. In this program, attendees will examine the Minnesota Rules of Professionalism and Ethics and examine examples of ethical dilemmas in professional practice. Specific case studies will be used to provide a foundation for an analysis regarding how the fostering of ethical diversity and thinking about one's personal ethics within organizations can prevent the slippery slopes that lead to administrative evil or unethical behavior.

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1/26/22 Portland Limestone-Cement and New Industry Initiatives Jamie Farny (Portland Cement Association) 1 Hour

With a growing interest in sustainability, the construction industry is …
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With a growing interest in sustainability, the construction industry is looking for solutions to help reduce its carbon footprint. The Portland Cement Association’s newly released Roadmap to Carbon Neutrality lays out the cement and concrete industry’s commitment to a lower carbon future. With its proven performance, portland-limestone cement, or PLC, is ready to play a key role, yet many designers and specifiers don’t know about it. This program will explain what PLCs are, how to use them, and their effects on fresh and hardened concrete properties. Several examples of PLC projects in the U.S. over the past decade will show how others have used it successfully.

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3/23/22 The Role of Materials in Sustainable Concrete Pavement Construction Dr. Peter C. Taylor P.E. (Director, CPTech Center) 1 Hour

With increasing discussion about the need to control global warming, eng…
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With increasing discussion about the need to control global warming, engineers are starting to pay attention to how they can reduce the environmental impact of their work. This presentation will review what actions have been taken in recent years to reduce carbon footprint in concrete construction, as well as offer some thoughts on what actions can be taken today, and dream a little about the future.

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6/3/20 Concrete: Adaptive and Resilient Engineering for Climate Change Julie Buffenbarger 1 Hour Concrete, a core building material, has general properties — including st…
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Concrete, a core building material, has general properties — including strength, durability, versatility, and relatively low cost— making it the most used building material in the world. the immediate and imminent challenges brought by population growth, urbanization and industrial production have provided an impetus for an increasing need for the resilience of buildings and infrastructure manufactured with concrete.

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