Webinar Archives

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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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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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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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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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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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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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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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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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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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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.