The Arch Bridge Mystery
For some years, concrete from the Manayunk Bridge�a long-idle, spandrel-arch railroad bridge in Philadelphia�had been spalling toward the streets and river below. While a system of nets...
Construction Control for Earth and Rockfill Dams
Technical Engineering and Design Guides, as adapted from the U.S. Army Corps of Engineers, No. 27 This manual provides critical guidance for constructors...
Seattle Solutions
Many of Seattle's most important bridges are vulnerable to serious damage if a much-anticipated big earthquake hits. A city-wide study designated lifeline structures for retrofitting,...
Advancing Composites (Available in Structural Engineering Special Section only)
Advanced composites, particularly fiber-reinforced polymers, have received considerable attention from bridge owners over the last few years, as cost-effective, durable alternatives to...
Calendar: Bridges 2000 Calendar
Featured bridges are: Mill Creek Park Suspension Bridge (OH); Coos Bay (McCullough Memorial) Bridge (OR); Gothic Arch (NY); Bidwell Bar Suspension Bridge (CA); Plaza de Espana (Spain);...
A Composite Sketch
Engineers are using the lightweight advantages of fiber reinforced polymers to build short span vehicular bridges and pedestrian bridges, particularly in remote areas, such as national...
High-Performance Powder
The application of fundamental principles related to the composition, the making, and the thermal treatment of concrete resulted in the development of a new type of concrete with outstanding...
Mix and Match
The U.S. Navy wanted to expand operations at Pearl Harbor, which required a bridge from Oahu to nearby Ford Island. The bridge spans more than 4,000 ft, and combines a fixed bridge and...
Balancing Act
The cable-stayed $69 million Glebe Island Bridge in Sydney was built using a combination of one rolling frame and one form traveler instead of a more orthodox two or four form traveler...
Record Spans in Japan
The Japanese bridge authority was tasked in 1970 with overseeing a vast project to link to two main islands of Honshu and Shikoku. The project, scheduled for completion in 2000, comprises...
Positively Not Pedestrian
An elaborate pedestrian and bicycle bridge in Eugene incorporates a number of innovative engineering features to create an aesthetically pleasing structure to complement the surrounding...
Putting Polystyrene to Work
Geofoam, the generic name for block or low density cellular plastic foam solids used in geotechnical applications, has low density and good insulation properties, which makes it well suited...
Czech It Out (Available only in Structural Engineering Special Issue)
Bridge and transportation engineers and architects combined on the design of a unique bridge in a small city in the Czech Republic. The cable-stayed bridge only has one tower which is...
Casting Hot and Cold
Contractors and engineers battled the Minnesota winter to build a concrete segmental bridge with form travelers. Superstructure segments were poured in temperatures as low as -19F, using...
Rapid Redecking
A contractor replaced nearly 7,000 m� of steel grid roadway deck filled with microsilica concrete on the Canadian crossing of the Thousand Islands bridge system more than one year ahead...
Scaffolding�What Can We Do? (Available only in Structural Engineering Special Issue)
Simpson Gumpertz & Heger Inc. investigated a construction site scaffolding collapse at a West Coast hotel which permanently injured three workers. The engineering investigation...
Hovering Over the Harbor
The $600 million extension to the Hong Kong Convention and Exhibition Center features a highly sculpted roof inspired by the uplifting image of seabirds in flight, as well as a 300-ft-long...
Santa Fe Sensation
The new renovation of the Sante Fe Opera Theater is a striking combination of architecture and engineering. The owners wanted to upgrade amenities, especially ADA compliance, and to protect...
All Decked Out
After 50 years of wear, the deck of New York City's Williamsburg Bridge was buckling and badly in need of replacement. In 1994, consultants recommended replacing the deck...
Cable-Stay Conundrum
Wind- and rain-induced vibrations of cables on cable-stayed bridges are a relatively new phenomenon. While some observers report hearing about such vibrations ten or 12 years ago, typically...
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