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Webinar Archives

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Aired Webinar Presenter Length Description Recording Presentation
3/3/21 #Concrete Tough: Are You Tough Enough Jereme Montgomery and Art Thompson 1 Hour

Concrete is the foundation for everything we build. Concrete is an integ…
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Concrete is the foundation for everything we build. Concrete is an integral part of homes, businesses, schools, offices, churches, roads, and bridges. The concrete industry is in need of people who aren't afraid of hard work. A career in the concrete industry not only pays well but gives individuals the chance to build something that will stand the test of time. Right now, there is a growing need for concrete contractors, equipment operators, ready mix concrete truck drivers and quality control personnel. #ConcreteTough is a Nebraska based workforce recruitment campaign that exposes youth to the concrete construction industry. This message is communicated through participating in various career fairs, concrete 101 programs, and presented to numerous schools on the different careers the concrete Industry offers. Attendees will learn ways that they can incorporate concrete career awareness into their own workforce recruitment efforts.

A short overview of the new Concrete Industry Management degree at South Dakota State University will also be included with this webinar.

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10/13/20 ACI 360 – Design of Slabs on Ground Scott Tarr, PE, FACI (North S.Tarr Concrete Consulting) 2 Hours

There are five commonly used procedures for designing industrial floor s…
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There are five commonly used procedures for designing industrial floor slabs. All of them are effective when their recommendations and details are followed. So, how does a designer choose the best method for a particular floor?  The most common approach is to determine the type of floor construction needed for expected loading conditions. Then, from the design procedures, select the most appropriate method for determining floor thickness, reinforcement, joint spacing, and other details.  This presentation will discuss the ACI 360 “Guide to Design of Slabs on Ground”.  It will briefly address the planning, design, and detailing of slabs. Background information on design theories is followed by discussion of the types of slabs, soil-support systems, loadings, and jointing. Some worked design examples for various types of concrete slabs-on-ground will also be covered.

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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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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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1/13/21 Better Design Through Embodied Carbon - Part One of the Sustainable Structures Webinar Series Emily Lorenz, PE 1 Hour

Part of the Sustainable Structures Webinar Series
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Part of the Sustainable Structures Webinar Series: Now that architects have a good understanding of environmental impacts related to energy use, the next design frontier in tackling climate change is reducing the embodied carbon in buildings. This live webinar will focus on best practices for determining the embodied carbon in a building, including credible sources for embodied carbon data. It will introduce common practices and misconceptions about comparisons of embodied carbon. A case study will be presented that highlights how design decisions may be influenced when comparing among up-front carbon, use-phase carbon, or whole-life carbon. The presentation will highlight existing tools related to quantifying embodied carbon.

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2/3/21 Building More than Just the Pedestal: An Owner/Developer’s Perspective on Building All Concrete Multifamily Mid-Rise Ryan Bedford (Bedford Development) 1 Hour

Part of the Sustainable Structures Webinar Ser…
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Part of the Sustainable Structures Webinar Series: Look around and you’ll see many five to seven story projects being built today with a one- or two-story concrete pedestal, supporting up to five floors of steel or wood frame. These “pedestal” projects are assumed to be the cheapest way to build while longer term ownership implications of these designs are not well understood. This one-hour presentation dispels the myths that are driving the popularity of pedestal construction and demonstrates the value concrete provides.

 

The developer/owner’s perspective on building multi-family housing projects with Insulating Concrete Forms (ICFs) will be presented, and will include design, construction, and energy-efficiency implications, as well as tenant satisfaction. The presenter will overview his use of ICF’s and concrete for the exterior wall system at Kendal Lofts, a 42-unit project in Waukesha, Wisconsin. In addition, the presenter will also discuss his latest all-concrete residential projects in Wisconsin and Florida.

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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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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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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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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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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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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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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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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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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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6/17/21 Hot Weather Concrete Ryan Scott (GCP Applied Technologies) 1 Hour

Hot weather conditions are not solely related to the air temperature whe…
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Hot weather conditions are not solely related to the air temperature when placing concrete.  Those conditions are defined in ACI and ASTM documents.  This presentation will focus on being able to define hot weather conditions and its effects on concrete in the plastic and hardened state.  This presentation will also provide details on how to overcome the conditions of hot weather when placing concrete.

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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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7/8/20 Introduction to Insulating Concrete Forms John Lee, PE, LEED® A.P. and Curt Gohmann 1 Hour The use of Insulating Concrete Forms or ICF’s as a structural building en…
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The use of Insulating Concrete Forms or ICF’s as a structural building envelope has increased in recent years as building owners look to create buildings that require less maintenance while being energy efficient, quiet and, most importantly, resilient. This one-hour presentation will discuss the concept of ICF’s from design to construction while highlighting the many benefits for the designer, contractor, owner and occupant. Attendees of this course will see a variety of project types and learn why ICF’s were chosen over other building materials.

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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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4/22/21 Mass Concrete Constructability Oscar R. Antommattei, MS, PE, FACI (Chief Concrete Engineer & Materials Engineering Manager, Kiewit) 1 Hour

Mass concrete (or thermally controlled concrete) typically requires impl…
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Mass concrete (or thermally controlled concrete) typically requires implementing thermal control measures to reduce maximum temperature and mitigate temperature difference. Specified temperature limits and thermal control requirements can affect mix design proportions, materials selection, reinforcement details, construction operations and compliance to specifications for the work. Many specifications still limit concrete temperatures to overly conservative default values without recognizing concrete properties and performance that allow alternative temperature limits more suitable for the specified work while maintaining quality and improving constructability. This issue frequently results in challenging scenarios that create design difficulties and unnecessary constructability problems for mass concrete. This presentation focuses on the implementation of today’s knowledge of mass concrete and best practices to overcome mass concrete challenges and facilitate solutions in projects. A special emphasis will be given to the technical updates provided for mass concrete requirements and guidance progressing in North America industry standards.

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