Review Category : Feature

An Improved Approach for Seismic Bracing

In recent years, engineers have been seeking to capture the benefits provided by buckling restrained braces (BRBs) through the exploration of new braced-frame configurations to improve the seismic performance of building structures. One such alternative is the BRB mast-frame system, which enhances seismic performance and offers better architectural compatibility at a lower cost than conventional systems. The case study of 740 Heinz demonstrates the efficacy and cost efficiency of BRB mast-frames.

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Constructed from 1883 to 1898, the Provo Tabernacle was a historical treasure of The Church of Jesus Christ of Latter-day Saints (LDS) and the local community. It seated 1,500 and featured octagonal stair towers, a high-pitched gabled roof, art glass windows, exquisite woodwork, and a central tower topping out at 167 feet above the ground. The building hosted U.S. presidents, musical performances, school commencements, interfaith gatherings, and community events.

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Much has been written about the One North development in Portland, Oregon. The two buildings, known as East and West, feature unique architecture, beyond-code energy efficiency, and a shared community courtyard. The project has received numerous awards for innovation and sustainability. However, behind the unique exterior lies a story. The team used glulam construction to meet a number of structural and aesthetic goals.

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Pedestrian bridges capture the imagination and have the potential to transcend conventional design. There is a long history of landmark bridges created by some of the industry’s greatest engineers and architects. However, the overarching aesthetic demands an integrated approach. This article discusses the historical context of signature pedestrian bridges and showcases the tools and processes that facilitate an integrated design approach, using the example of the Lone Tree Bridge in metro Denver, Colorado, designed by Fentress Architects and Thornton Tomasetti.

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A popular community destination in New Haven, Connecticut, East Rock Park is listed on the National Register of Historic Places. The 427-acre park, which attracts visitors year-round for hiking, picnicking, bicycling, boating, and cross-country skiing, features a number of historic buildings, gardens, and structures that date to the late 19th and early 20th centuries. Among these is the circa-1900 East Rock Road Bridge, a steel arch bridge that crosses the Mill River on the west side of the park.

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The 783,800-square-foot Zurich North America Headquarters is the largest build-to-suit office project completed in the Chicago area in the last 15 years, but this striking addition to the I-90 corridor in Schaumburg is not just notable for its size. The unique building form is comprised of the three long rectangular bars shown in Figure 1. The east and west lower bars rise six stories from the ground, while the five-story upper bar sits on top of – and spans between – the two lower bars.

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The Wharf development is transforming Washington DC’s storied Southwest quadrant by creating a mile-long waterfront neighborhood that includes retail, residential, hospitality, offices and cultural complexes as well as a public park and piers. 525 Water is a 107-unit condominium building in Washington, D.C. and the first residential project to be constructed in The Wharf.

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Companies involved in foundations are reaping the benefits of new techniques and methods that allow building on land that was once deemed unbuildable.

For instance, at Geopier Foundation Company, Inc., Director of Business Development Matt Caskey points to their GeoConcrete Column (GCC) system which offers a cost-effective solution to support heavy applied loads, and control settlement at sites with weak and compressible cohesive and organic soils overlying dense soils or rock.

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The National Council of Structural Engineers Associations (NCSEA) is pleased to announce the winners of the 2016 Excellence in Structural Engineering Awards. The top projects were announced on the evening of September 16th during the Awards Program at NCSEA’s Structural Engineering Summit in Orlando. Presented annually since 1998, awards highlight work from the best and brightest in our profession.

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