Structural News

AISI publishes new standard for design of profiled steel diaphragm panels

Washington, D.C. — The American Iron and Steel Institute (AISI) published a new standard: AISI S310-13, North American Standard for the Design of Profiled Steel Diaphragm Panels. The new standard provides design provisions for diaphragms consisting of profiled steel decks or panels which include acoustic panels, cellular deck, and composite deck filled with concrete.

Horner & Shifrin develops repair plans for Maritz Overpass

St. Louis — Horner & Shifrin (H&S) developed plans for repairing the Maritz Overpass on Interstate 44 for the Missouri Department of Transportation (MoDOT). In June, the bridge was struck by an over-height commercial vehicle, severely damaging two of its steel plate girders and causing slight damage to four more.

AISI standards offered free at new website

Washington, D.C. – The American Iron and Steel Institute (AISI) announced that its S200-series (cold-formed steel framing), S300-series (profiled steel diaphragm), and S900-series (test) standards are now available for downloading free of charge at a new website location, www.aisistandards.org.

ACI Foundation’s Concrete Research Council announces new Research Network

Farmington Hills, Mich. — In its quest to align donors, researchers, and funders with concrete research projects, the ACI Foundation has united with several industry partners by formal Memoranda of Agreements to form the Concrete Research Network (CRN). The CRN is a forum for the concrete industry to engage and connect researchers, funding organizations affiliated with the concrete industry, and industry users with technical research needs, with the end goal of promoting research needs and projects that offer broad implementation across the concrete industry.

Iowa State engineers to simulate and model tornado winds and their effects on buildings

AMES, Iowa – The Iowa State University Tornado Simulator kicked up a thick and slowly spinning funnel cloud over a model of a small town, overwhelming the miniature streets, buildings and homes. Partha Sarkar turned from the laboratory vortex and announced, “That’s an EF3.” Most tornadoes (about 90 percent of them) are EF3 or less in intensity. And so Sarkar advocates that homes and buildings within tornado alley across the middle of the U.S. be designed to withstand EF3 tornadoes and their top wind speeds of 165 mph.

RIDOT to replace I-95 bridge within an 11-day period

Providence, R.I. — The Rhode Island Department of Transportation (RIDOT) is set to replace the Barton Corner Bridge, which carries I-95 over Route 2 on the Warwick/West Warwick town line, beginning later this month. The operation uses accelerated bridge construction techniques to complete the work in an 11-day period. The new bridges (north and southbound) are scheduled to be in place by Labor Day.

ASU selects Hunt-Sundt JV for Sun Devil Stadium renovation

Tempe, Ariz. — Arizona State University selected Hunt-Sundt, a joint venture of Hunt Construction Group and Sundt Construction, Inc., as the Construction Manager at Risk (CMAR) to renovate Arizona State University’s Sun Devil Stadium. The $162-million project includes complete reconstruction of the lower stadium bowl, new concessions, restrooms and amenities, along with new luxury suites on the east and west sides of the stadium.

Construction crews shift focus to the northbound span of I-495 Bridge

Wilmington, Del. — Now that the southbound span of the I-495 Bridge is open to traffic, construction crews have shifted their focus to the northbound span. In the past week they were able to finish underpinning the piers needing new support closest to the Christina River (pier 14) and Christiana Avenue (pier 11). These piers are now firmly encased in a new footer on top of underground support columns.

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