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Aired Webinar Presenter Length Description Recording Presentation
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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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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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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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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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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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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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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6/11/20 The Future of Fly Ash Doug Rhodes 1 Hour More than 75% of all concrete is made with fly ash. In some states, fly ash…
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More than 75% of all concrete is made with fly ash. In some states, fly ash is specified for all concrete structures. Several regional shortages in the past few years coupled with increasing EPA regulations and plant conversions from coal to natural gas has put the future of fly ash in question. This presentation will go over where the fly ash industry is today, what is being done to help with supply, and what is being done to help ensure a strong fly ash market for 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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5/21/20 Trends in Modern Concrete Floors Kevin MacDonald, PhD, PE, FACI 1 hour The drive for sustainability often creates a tension between durability, co…
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The drive for sustainability often creates a tension between durability, constructability an owner’s expectations. The presentation will concentrate on changes in owners expectations such as low maintenance, crack free and aesthetically pleasing slabs on grade. These will be reviewed in the context of new materials, such as alternative sources of binder, Type IL cements, sinusoidal or plate dowels, and the various techniques used to increase the spacing between joints, or even to remove them completely.

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4/15/20 MN Concrete Forum: Environmental Product Declarations - The New Normal? Curt Turgeon (MnDOT Pavement Engineer) 1 hour

The webinar introduces the concepts of Product Category Rules, Environme…
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The webinar introduces the concepts of Product Category Rules, Environmental Product Declarations and Life Cycle Assessment. Legislative and Industry developments are addressed to inform the audience of why these concepts will likely become a part of daily lives in the near future.

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