2021 Schedule of Events

Over the course of 2 days, the 2021 SEAoT State Conference will feature industry experts providing vital educational opportunities for attendees, as well as an unparalleled line-up of exhibitors.

Day 1 – Thursday, September 23, 2021

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8:30am - 9:00am

Bluebonnet Foyer

Board Continental Breakfast

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9:00am – 12:00pm

Bluebonnet

Board Meeting

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10:00am - 2:00pm

Salons A & B

Exhibitors Booth Set-up (must be set by 2:00pm)

 

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11:00am - 5:30pm

Mezzanine

Attendee Registration Opens

 

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11:30am - 12:30pm

Bluebonnet Foyer

Board Lunch

 

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12:30pm - 12:50pm

Salons C & D

Welcome and Opening Remarks

 

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12:50pm - 1:40pm

Salons C & D

AISC Certification: Why should it matter to you?

Speaker: Todd Alwood

ABSTRACT:

You might “know of” AISC Certification, but what is it? What does the program do for you?

The American Institute of Steel Construction (AISC) Quality Management Systems (QMS) Certification sets the quality standard and is the most recognized program for structural steel fabrication and erection. Attendees will learn about the hurdles to obtain AND maintain certification, plus recent program changes which affect engineers specifying this requirement. Also, the session will discuss IBC’s 1704.2.5.1 Fabricator Approval along with AISC 360’s Chapter N: Quality Control and Quality Assurance.

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1:45pm - 2:35pm

Salons C & D

Stiff Origami for Large-Scale Structures

Speaker: Evgueni Filipov

ABSTRACT:

The art of origami can be used to create a rich variety of deployable, reconfigurable, and adaptable three-dimensional systems. The principles can be used in practical applications ranging from metamaterials and micro-robotics to deployable space structures. This talk will present my group’s work on origami geometries and discuss how their stiffness properties are well suited for large-scale applications in Architecture and Civil Engineering. We will present cellular and tubular origami structures which possess unusually high stiffness-to-weigh ratios. Parametric variations of these tubes allow for complex polygonal cross-sections and for arch-like geometries. We also show a different cellular system made from a hexagonal pattern that can assemble into a stiff dome-like structure. Finally, we explore a new genre of curved crease origami which can transform a flat sheet into a unique corrugation that has a high bending rigidity in multiple directions. The talk will give an overview of our analytical tools for simulating origami structures and will present ongoing efforts related to the implementation and actuation of large-scale origami.

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2:35pm - 3:00pm

Salons A & B

Refreshment Break with Exhibitors

 

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3:00pm - 3:50pm

Salons C & D

Design and Development of Resilient Space Habitats

Speaker: Arturo Montoya

ABSTRACT:

The design of long-term deep space habitats is challenging due to the extraordinary demands of isolated and extreme environments, such as wild temperature fluctuations, destructive dust, meteoroid impacts, galactic cosmic rays, solar particle events, and vibrations. The Resilient Extra-Terrestrial Habitats research institute (RETHi), a NASA-funded Space Technology Research Institute, is developing the technologies needed to overcome the grand challenge of deep space habitation. This presentation will introduce RETHi’s vision, mission, research thrusts, and strategic plan. RETHi’s research work includes (a) establishing a resilient framework that anticipates and adapts to possible threats without fundamental changes in functions or sacrificing safety, (b) building networks of sensors that can actively learn, detect, and diagnose issues; and (c) developing autonomous robots that can operate independently and collaborate with humans. The talk will also describe the development of the Modular Coupled Virtual Testbed (MCVT), a real-time, physics-based simulation framework aimed to capture unpredictable interactions and a high degree of technical complexity, and its role in establishing a control-theoretic approach to resilience in complex systems. The process and methods used to develop the physics-based model with damageable-repairable capabilities that can be executed in real-time will also be discussed.

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3:55pm - 4:35pm

Salons C & D

Structural Engineering for NASA – past, present and future

Speaker: Salvador Nunez, PE

ABSTRACT:

Structural Engineering at NASA includes the design of facilities in fourteen sites in the contiguous States, in many states with many functions to design and test aircraft, rockets, spaceships, and orbiting telescopes. In addition, Engineering and Administrative Offices, Mission Control, Rocket Assembly, and Launching to name a few. There are large antenna installations and support facilities in multiple strategic locations around the globe covering a full range of latitudes and longitudes. These locations include Australia, Spain, and Puerto Rico. Johnson Space Center in Houston there is Mission Design, Flight Mechanics, Food Production Research, and Mission Control. But recently – there is the need to design habitat and construction in the Moon for the Artemis Project and later a habitat for Planet Mars for the Orion Project.

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4:35pm - 5:30pm

Salons A & B

Exhibit Hall Open

 

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6:30pm - 8:00pm

Arts Festival Plaza (walking distance)

Dinner

Dress attire: Western theme

Day 2 – Friday, September 24, 2021

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7:00am - 4:30pm

Salons A & B

Exhibitor Hall Opens

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7:00am - 8:00am

Salons A & B

Breakfast

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7:15am - 4:30pm

Mezzanine

Attendee Registration Opens

 

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8:00am - 8:50am

Salons C & D

SpeedCore and Steel-Concrete Composite Construction: The Best of Both Worlds

Speaker: Dr. Amit Varma

ABSTRACT:

The merits of steel-concrete composite construction have been recognized and leveraged for decades, but they have never been harnessed quite so efficiently as the new SpeedCore system, which consists of composite plate shear walls and composite coupling beams. This system can be used, when needed, in lieu of traditional reinforced concrete core walls/shear walls in commercial, industrial, or nuclear construction. The primary advantages of this composite system stem from the efficient modularization and prefabrication of steel modules, and the elimination of rebar cages, formwork, and falsework, resulting in an expedited construction schedule and thus overall increased project economy.

In this year’s T.R. Higgins Lecture, Purdue University’s Amit Varma will summarize the results of extensive research conducted over more than 12 years, culminating in the development of design specifications, provisions, and guidelines for composite walls and systems for various applications. He’ll highlight experimental behavior, numerical modeling, and design of composite walls and the SpeedCore system for wind loading, seismic loading, and fire loading conditions. For wind loading, the presentation will focus on stiffness and strength. For seismic loading, the presentation will focus on the capacity design method and performance evaluation. For fire loading, the presentation will cover both the fire-resistance rating (in hours) and strength at elevated temperatures.

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8:55am - 9:45am

Salons C & D

Generative Design in the Shape Optimization of Aerospace Structural Components

Speaker: Dr. Edel Arietta, UTEP

ABSTRACT:

An Air Force Legacy aircraft has an average service life of about 27 years, and in extreme cases can get up to 70 years. For this reason, it can be difficult to find spare parts for them as original manufacturers may stop supporting them in the time that they are in service. The problem becomes more difficult when the structural frames and components are subjects of retrofitting because of hosting new technologies and upgrades. For the low volume of the parts needed, it would not be cost-time effective to manufacture these spare parts by traditional methods, as they are intended for mass production. Additive Manufacturing (3D-Printing) poses as a solution for that as it can build unique and complex parts at a reduced lead time and base cost. It also provides the opportunity to innovate on previous designs, as AM has the capability to build complex geometries with a variety of lightweight materials. In this session, a study case is presented on the design, build, and test of a bell crank utilizing AM capabilities and generative design techniques. A bell crank is primarily needed as a form of mechanical movement within aircraft and is a highly requested type of replacement part. The design objective was to maximize the strength to weight ratio and minimize the cost and manufacturing lead time; while meeting baseline mechanical properties of a traditionally manufactured part.

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9:45am - 10:15am

Salons A & B

Refreshment Break with Exhibitors

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10:15am - 11:05am

Salons C & D

Micrometeoroid and Space Debris Hypervelocity Impacts on Spacecraft Components

Speaker: Dr. Cesar Carrasco

ABSTRACT:

Since the 1950s and especially the last couple of decades we have seen a proliferation of Low Earth Orbit (LEO), Moon, and Interplanetary space missions. LEO missions have led to the creation of a cloud of debris which are remnants of these spacecraft and can range in size from just specks of paint to full-size “dead” satellites. In addition to this debris orbiting the earth, space is naturally occupied by micrometeoroids of varied sizes that orbit the planets and the sun. Both space debris and micrometeoroids are traveling at high speeds and pose a risk to the structural integrity of spacecraft components and sensors used in LEO and Interplanetary missions. This talk will give a brief introduction to how this risk is quantified and what mitigations strategies can be employed to reduce it. As an example, a discussion of the risk analysis done by UTEP researchers on the Parker Solar Probe will be presented.

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11:10am - 12:00pm

Salons C & D

Evaluating the Effectiveness of Fly Ashes and Other Potential Alternatives to Mitigate ASR Using an Innovative Performance-based Approach

Speaker: Dr. Anol Mukhopadhyay

ABSTRACT:

Since fly ash (especially Class F) availability is decreasing with change in composition, the dependency on using fly ash alternatives (e.g., fly ashes with changed composition, ponded and harvested ashes, blended ashes, natural pozzolans, bottom ashes, etc.) is increasing. Therefore, developing a performance-based approach using innovative test methods to evaluate the effectiveness of these ashes to mitigate alkali-silica reaction (ASR) is in high demand. The main objective of this study was to develop a performance-based approach using an emerging accelerated concrete cylinder test (ACCT, approved as an AASHTO standard) method with an estimation of concrete pore solution alkalinity (PSA) to evaluate the effectiveness of the fly ashes and other potential alternatives to mitigate ASR.

TTI has developed an innovative approach to estimating concrete PSA as a function of fly ash replacement levels. A chemical screening tool (CST) based on aggregate threshold alkalinity (THA) – PSA relationship has been developed for rapid determination (within 5 days) of fly ash content to mitigate ASR. The relationship between aggregate ASR reactivity and threshold alkalinity (THA) determined by AASHTO T364-17 was found to be effective to assign THA for an aggregate with known reactivity. The ACCT method was very effective to validate these CST-based predicted fly ash contents with cylinder expansion criterion below 0.04% at 75-90 days. A favorable comparison between CST-based estimations and contents determined by the ACCT / ASTM C1567 tests was observed, which was the basis to consider the CST as an acceptable rapid test to evaluate fly ash effectiveness during the mix design stage. The CST can be used to verify the contents determined by ASTM C1567 (14 days testing duration) in one hand and identify the ashes (i.e., mismatch ashes based on CST vs ASTM C1567 comparison) that need further validation testing by the ACT method on the other hand.

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12:00pm - 1:30pm

Pancho Villa

Awards Luncheon & Keynote: Spaceforce Collaboration with UTEP

Speaker: Dr. Heather Wilson

ABSTRACT:

Dr. Wilson will describe the current status and strategic objectives of the university, including the Advanced Manufacturing and Aerospace Center.

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1:35pm - 2:00pm

Salons A & B

Refreshment Break with Exhibitors

 

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2:05pm - 2:55pm

Salons C & D

Concrete Specifications… Why are my specs ignored?!

Speaker: Jacob Borgerson

ABSTRACT:

Specifiers and particularly concrete construction specifiers are required to have an in-depth understanding of concrete. Engineers and specifiers can minimize concrete construction problems with their specifications but often contribute to the problem. Unfortunately, there are instances when the specifications are unrealistic, outdated, and just don’t make any sense. Poor specifications can have significant consequences, from a legal, financial, and life safety perspective. This seminar will discuss the tell-tale signs of bad concrete specifications, examine typical causes, and provide examples of good performance-based metrics. Case studies and specifications from various projects will be used to illustrate the concepts presented. Topics will include slab finish, slump, temperature, strength, floor flatness/levelness, slab moisture, mass concrete, in addition to others. This presentation will benefit anyone who has sat at their desk and questioned their specifications

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3:00pm - 3:50pm

Salons C & D

The World’s Largest Geodesic Dome: Jeddah Superdome

Speaker: Francisco Castano

ABSTRACT:

In the summer of 2020, with a pandemic raging and day temperatures exceeding 110°F, a 689′ clear-span geodesic dome was fabricated and built in Jeddah, KSA. Structural members were fabricated right on-site. No scaffold, props, or large cranes were used to erect the structure. The whole building envelope was complete within 6 months. This presentation explains the engineering and technology behind this record-setting dome.

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3:55pm - 4:25pm

Salons A & B

Refreshment Break with Exhibitors

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4:25pm

Salons C & D

Exhibit Hall Closes

Register Now!

Join us for the 2021 State Conference as we “Look to The Future.” Attendees will have an opportunity to connect as we discuss emerging technologies, latest developments, and even structural engineering in space as we welcome the return of in-person training and networking in El Paso – connecting the Old West and Mexico to the world of the future!

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