About the author  ⁄ STRUCTURE magazine

By Matt Barnard

Somewhere, the earth is shaking. Earthquakes happen frequently throughout the world but often go unnoticed or are of little concern. Occasionally, earthquakes are much larger with shaking that impacts people and the built environment and cause tremendous loss of life, as we saw last year with the disaster in Turkey. In a world that seems to be more connected than ever, whether through our instantaneous sharing of everything to our global economies and supply chains, we now almost immediately see and then are impacted by these large earthquakes whether we have personally felt the shaking or not.

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By Joan Malana Kennedy

This is part 2 of a 2-part series about the developing issues in access to design data concerning digital collaborative working environments, particularly BIM. Part 1 discussed the background and BIM development in the UK, and the first reported formal dispute involving BIM in the UK, Trant Engineering Limited v Mott MacDonald Ltd [2017] EHWC 2061 (TCC). This article will deal with the lessons learned about TEL v MML [2017] and the implications and applications for designers.

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By Dr. Frank Griggs, Dist. M. ASCE

Click here to view the article with images in the digital flipbook.

Proposals to span the Mississippi River by a bridge were submitted by Charles Ellet, Jr. in 1840 for a 1,200-foot suspension bridge and by John A. Roebling in 1868 for another suspension Bridge. A local engineer by the name of Truman Homer proposed a tubular bridge similar to Stephenson’s Menai Straits Bridge in 1865 with three 500-foot spans. With the opening of several bridges upstream on the Mississippi, the City of St. Louis feared losing its claim as the gateway to the west and started to plan its own bridge. This would require a charter from both Missouri and Illinois as well as the federal government. On February 5, 1864, St. Louis received its charter from Missouri which stated in Section 6:

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Pleasanton, Calif. — Simpson Strong-Tie, the leader in engineered structural connectors and building solutions, has published its 2024-2025 Wood Construction Connectors catalog (C-C-2024), a comprehensive guide to the company’s most recent innovations, product line expansions and existing solutions for wood construction applications. The 372-page catalog offers extensive specification details and installation instructions for wood-to-wood, wood-to-masonry and wood-to-concrete structural connectors, as well as information on allowable loads, code reports, corrosion and coatings, fastener identification and more.

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James R. (Jim) Harris received his undergraduate education in civil engineering at the University of Colorado at Boulder in 1968. After working in consulting in Denver for five years, he earned his MSCE and Ph. D. from the University of Illinois, Urbana in 1975 and 1980, respectively. From 1975-1981 he was a research structural engineer at the National Bureau of Standards after which he returned to professional practice. He established J.R. Harris & Company in 1984. 

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Michael O’Rourke has been a professor in the Civil Engineering Department at Rensselaer Polytechnic Institute (RPI) in Troy, NY, since 1974. He has taught over 4,000 undergraduate and graduate students. In addition, Professor O’Rouke supervised 62 students for Master of Science theses and 10 for Ph. D dissertations. From 1997 to 2017, Professor O’Rouke served as Chair of the Snow and Rain Loads Subcommittee of the American Society of Civil Engineer’s ASCE 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures. He is a Former Chair of the ASCE 7 Snow and Rain Loads Subcommittee and is a Fellow of the Structural Engineering Institute (SEI). He is the nation’s foremost snow expert and is known for his extensive snow load research, authoring many articles and guides related to snow loads.

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Stephanie Slocum

Stephanie Slocum is the Founder and CEO of Engineers Rising LLC and is a career and business strategist for engineers. She is the author of She Engineers, chair of the Structural Engineering Institute’s (SEI’s) Business Practices Committee and has also been elected to the SEI Board of Governors. (stephanie@engineersrising.com)

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Pleasanton, Calif. — Simpson Strong-Tie, the leader in engineered structural connectors and building solutions, has introduced the Yield-Link® brace connection (YLBC), an innovative structural steel solution for dissipating energy through a fuse connection, creating a resilient steel frame that protects the beam column and brace during seismic and wind events.

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