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Aired Webinar Presenter Length Description Recording Presentation
7/23/20 FIU Pedestrian Bridge Collapse: Testing of Full-Size Replicas of Failed Connection Gary J. Klein, PE, SE 1 Hour

WJE carried out independent studies related to the 201…
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WJE carried out independent studies related to the 2018 collapse of the FIU Pedestrian Bridge in Miami. Most significantly, WJE developed and tested full-sized specimens to evaluate the significance of the National Transportation Safety Board’s (NTSB’s) finding that the construction joint between the northernmost diagonal and deck was left in an as-placed condition, rather than intentionally roughened as required by the project specifications. The webinar also describes WJE’s independent review of shear friction strength in accordance with the AASHTO Code.

 

The presentation describes the details of the experimental program that demonstrated that, had the construction joint been roughened as required by the project specifications, the collapse would not have occurred. Contrary to NTSB’s findings, the contractor’s failure to roughen the surface was the primary cause of the collapse.

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11/2/22 Firestop Services and Fire Damage AssessmentFirestop Services and Fire Damage Assessment Kim Deibel, PE (Braun Intertec) 1 Hour

The webinar explores two concepts; First is the preventative measures an…
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The webinar explores two concepts; First is the preventative measures and the services around firestop consulting, inspections, and what architects, contractors, project managers, and installers should keep in mind as they plan, construct, and maintain firestops in their facilities. Second is what happens when a fire does occur, how does it affect the concrete, and what assessments and testing can be completed onsite to determine repair or replacement options.

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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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11/8/23 Evaluation of Concrete Core Test Results According to ACI 318-19 Luke Snell, P.E. 1 Hour

This presentation by Luke Snell, P.E. and an H…
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This presentation by Luke Snell, P.E. and an Honorary Member of ACI will take us step by step through the process of how to make a decision with  core test  results. Remember everyone is on edge when cores are needed – the concrete may be below strength and correction measures even removed may be needed!!!

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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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11/12/20 Ethics - Not Black and White but Shades of Gray William Rushing, P.E., F.ACI (Vice President, Waldemar S. Nelson & Co., New Orleans, LA) 1 Hour

Making a decision that requires ethical consideration is usually not eas…
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Making a decision that requires ethical consideration is usually not easy. Rarely are we faced with an ethical question that has a corresponding answer that is clearly black and white. Doing the ethical thing can require effort and determining the correct path may include many variables that cause us to pause and consider what the right decision is. In this presentation, the speaker will discuss some scenarios that illustrate the grey area that can be "ethics." The presenter will work through the scenarios an offer insight on determining the correct and ethical way to proceed through a decision-making process.

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5/10/23 Ethical Decision Making in Engineering and Construction David Schultz 1 Hour

Engineering ethics is a set of ethical standar…
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Engineering ethics is a set of ethical standards for engineers to follow which can apply to most circumstances that arise on the job. These ethical standards are the engineers’ obligations towards the public, employers and the profession. The purpose of engineering ethics is to identify specific ethical issues that may arise in order to avoid a potential problem.

The presenter will be David Schultz, Professor of Political Science (Hamline University).

No credits will be awarded for viewing recordings of the webinar. 

The webinar is being sponsored by the Iowa Ready Mixed Concrete Association, the Minnesota Concrete Council, the North Dakota Concrete Council, the Oklahoma  Ready Mixed Concrete Association, the South Dakota Ready Mix Association, and the Wisconsin Ready Mixed Concrete Association. 

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11/4/20 Economic, Construction & Cement Outlook: Cyclical & Structural Changes Resulting from Covid Dave Zwicke (Portland Cement Association) 1 Hour

The webinar covers Minnesota's cement/concrete trends and where the …
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The webinar covers Minnesota's cement/concrete trends and where the market is headed in the next few years. We will examine economic growth scenarios that may unfold under differing assumptions regarding COVID-19. Where are the growth opportunities? Will there be structural changes to the construction market following the recession? The presenter is Dave Zwicke who is Sr. Director of Economic Analysis at the Portland Cement Association.

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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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4/12/23 Design for Resilience and Sustainability Andy Horgan (Nudura Systems, Inc.) and Jim Schneider, LEED AP (PCI Mountain States) 1 Hour

Resilient design of buildings in the twenty-first century is imperative …
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Resilient design of buildings in the twenty-first century is imperative given increased intensity and frequency of extreme adverse climatic events.  Buildings must withstand environmental impacts to their exteriors while simultaneously protecting the occupants within and maintain operational functionality.

 

In this presentation we will discuss how to incorporate concrete construction systems as a sustainable building assembly option to meet the challenges of designing and building energy efficient and resilient structures that can withstand most, if not all natural disasters.

 

Architects, Engineers, General Contractors and Building Owners will gain a thorough understanding of concrete structural system benefits, including thermal envelope performance, design integration, construction processes, and renewable energy resources for consideration and implementation into overall building envelope design and construction.

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6/1/22 Controlling Color & Longevity in Decorative Concrete Flatwork Chris Sullivan (The Fenix Group) 1 Hour

Recognizing decorative concrete flatwork requires a higher attention to …
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Recognizing decorative concrete flatwork requires a higher attention to detail is critical for success.  This program will cover best practices for all facets of decorative concrete flatwork.  We will look at steps including pre planning, installation, sealing and maintenance, and how each impacts the end result.  The primary focus will be key steps installers and designers need to consider to control color and promote longevity.

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10/21/20 Construction Special Inspections Rob Flickinger and Derek Van Heuveln (American Engineering Testing) 1 Hour

Anyone who has watched a building under construction can appreciate its …
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Anyone who has watched a building under construction can appreciate its complexity and sophistication. Occasionally, inspection and testing requirements occur that the local code official may not be qualified or experienced to address, so third-party assistance is needed. The building codes address this need through a specific requirement for structural tests and “special” inspections. A special inspection can be required for materials, installation, fabrication, erection or placement of components and connections where special expertise is needed.  This presentation will cover the requirement of special inspections as well as some examples of when construction testing and inspections did not go as planned. 

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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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1/20/21 Concrete Systems 101 – An Introduction to Insulating Concrete Forms and Precast Concrete Micah Garrett (BuildBlock) and Randy Wilson (PCI) 1 Hour

Part of the Sustainable Structures Webinar Series
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Part of the Sustainable Structures Webinar Series: This presentation will give a brief basic overview of insulating concrete forms (ICFs) and precast concrete.  The presenters will answer the following questions:  What are ICFs and what is precast concrete? What are the benefits of each system?  How is each installed/erected?  What types of buildings are constructed from precast concrete and ICFs?     

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1/28/21 Concrete Pumping 101 Jim Bury, Director of Placing Equipment at Conforms. 1 Hour

The concrete pumping equipment available today is more advanced, reliabl…
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The concrete pumping equipment available today is more advanced, reliable, and prolific than ever before. So why can’t I find one that can move this perfect mix I just created?

The factors that can affect concrete pumping are numerous, inter-related, and sometimes hidden, making the predicting of pumpability seem elusive. So how is the construction industry, which is becoming ever more cost conscious and filled with complicated and demanding concrete requirements, to deal with it on a more simplified level?

This presentation will discuss some of the over 50 factors that affect concrete pumping, the basics of how concrete pumping works, how mix designs can be adjusted to accommodate the application’s multiple requirements, and what can be done to help eliminate the jobsite problems that result in a finger pointing exercise and costly downtime.

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7/14/21 Concrete Overlays of Existing Asphalt Streets and Parking Lots Jon Hansen and Phil Kresge (NRMCA) 1 Hour

The performance life of asphalt surfaced parking lots can be extended by…
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The performance life of asphalt surfaced parking lots can be extended by placing a bonded concrete layer on top of the existing asphalt. This technique has been used for many years for highway, street, and parking lot pavements but still engineers and owners are unfamiliar with the process. This session will cover the publication entitled the Guide to Concrete Overlays of Asphalt Parking Lots and demonstrate the steps necessary to properly design and construct a concrete overlay.

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3/13/24 Concrete Innovations - Pathways for reducing concrete's carbon footprint Donn Thompson, Senior Director, Building Innovations, National Ready Mixed Concrete Association 1 Hour

It is becoming increasingly common for developers and the AEC community …
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It is becoming increasingly common for developers and the AEC community to establish carbon reduction goals for projects, in addition to other sustainability targets. Policies are being put in place that set carbon footprint limits on certain materials. In this session we will review the current landscape of embodied carbon and sustainability, how to calculate the carbon footprint of your scope on a project and discuss availability of local materials and strategies to reduce embodied carbon of concrete, including specific strategies to incorporate in specifications. We will also discuss how the ready-mix supplier can support the industry on a project that has carbon reduction goals. 

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10/5/22 Concrete Cracking – Best Practices Kim D. Basham, PhD, PE, FACI. (Senior Structural Engineer, KB Engineering, LLC) 1 Hour

Concrete provides structures with strength, rigidity, and resilience fro…
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Concrete provides structures with strength, rigidity, and resilience from deformation. These characteristics, however, result in concrete structures lacking the flexibility to move in response to environmental or volume changes. Cracking is usually the first sign of distress in concrete. Cracking of concrete flatwork is natural, expected, and accepted. However, cracks may affect appearance, performance, and maintenance costs. This presentation will discuss the various types of concrete cracks and how to best minimize their occurrence.

Learning Objectives:
1.    Understand the different types of cracking in concrete.
2.    Understand what causes concrete to crack.
3.    Understand how to evaluate the difference between structural cracks and cosmetic cracks
4.    At the conclusion of the presentation, participants will know how to minimize concrete cracks.

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9/17/20 Concrete Cracking Kim D. Basham, PhD, PE, FACI (KB Engineering, LLC) 1 Hour

Concrete provides structures with strength, rigidity, and resilience fro…
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Concrete provides structures with strength, rigidity, and resilience from deformation. These characteristics, however, result in concrete structures lacking the flexibility to move in response to environmental or volume changes. Cracking is usually the first sign of distress in concrete. Cracking of concrete flatwork is natural, expected, and accepted. However, cracks may affect appearance, performance, and maintenance costs.  This presentation will discuss the various types of concrete cracks and how to best minimize their occurrence.

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1/10/24 Concrete Basics for Young Professionals Tyler Ley, PhD, PE, FACI, FAcerS 1 Hour

Many issues related to construction can be all…
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Many issues related to construction can be alleviated by a fundamental understanding of the basics of concrete. This starts with knowledge of the standard components of a concrete mixture including cementitious materials, aggregates, water, and admixtures and their importance on the properties of fresh and hardened concrete. The combination of these materials in various proportions can produce mixtures suitable for a wide range of applications and placement methods. Once placed, the concrete must be properly cured to develop its intended properties. This presentation introduces the basics of concrete and describes its importance and application as a construction material.

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