The Chernobyl Problem
When the infamous accident at the Chernobyl Nuclear Power Plant occurred in April 1986�a catastrophe that involved an explosion that blew off the top of one of the plant's...
Use of New Liner In Water Distribution System
For years there has been interest in rehabilitation of water distribution systems to provide quality drinking water and to reduce breaks in the water system service. Much work has been...
A Glass Act
The Museum of Glass under construction in Tacoma, Washington, is the centerpiece of a plan to develop brownfield sites on the Thea Foss Waterway. The $57.3-million museum project includes...
Ancient Concept, Modern Context
For several centuries, Bibliotheca Alexandrina was the cultural center of the Western world. It was built by the heirs of Alexander the Great some 2,400 years ago and burned, some say...
Modeling of Inelastic Behavior of RC Structures under Seismic Loads
Proceedings of the U.S.?Japan Seminar on Post-Peak Behavior of Reinforced Concrete Structures Subjected to Seismic Loads: Recent Advances and Challenges on Analysis and Design, held in...
Stronger Longer
Like many older concrete bridges, the Sierrita de la Cruz Creek Bridge, a 1957 crossing near Amarillo, Texas, suffered from concrete deterioration. When the Texas Department of Transportation...
Effect of Column-to-Beam Strength Ratio on Seismic Performance of RC Moment Frames
Reinforced concrete (RC) moment frames are often used in building applications. During strong earthquake excitations, such buildings have been subject to soft-story or column sidesway...
Rehabilitation of the Packers Falls Bridge
The Packers Falls Bridge was constructed in 1912 and consists of a 42' (12.8m) single span, reinforced concrete arch structure. This bridge was constructed using a unique forming system...
Holding Steady
The San Diego�Coronado Bay Bridge is an unmistakable landmark that frames the skyline of downtown San Diego, providing a vital link between the mainland and the Coronado peninsula. The...
Composites Enhance Timber Bridges
Two relatively new technologies are available for reinforcing or strengthening timber bridges with fiber-reinforced polymers (FRPs). The first consists in reinforcing the tension side...
Extended Life Span
The Harlem River Lift Span�part of New York City's Triborough Bridge System�was the largest vertical span in the country at the time of its construction in 1936. The lift...
Native American Imprint
Following a design phase of more than four years, construction has finally begun on the Smithsonian Institution's National Museum of the American Indian, which will occupy...
Liner Lessons
The County Sanitation Districts of Los Angeles County comprise 25 independent special districts that cover a service area of approximately 770 sq mi (1,990 km�). Since the early 1990s...
Towering Achievement
A new headquarters complex being constructed for Goldman Sachs in New York City will rise where a Colgate factory once stood. The complex will incude a high-rise main building, a mixed-use...
Gap Analysis for Durability of Fiber Reinforced Polymer Composite in Civil Infrastructure
Prepared by the Civil Engineering Research Foundation. This report provides the results of a study on what is known and not known about the use of...
Closing in on Approval
A lack of qualification criteria and design standards has hindered some engineers from using fiber-reinforced polymers to restore concrete structures. But several organizations�among them,...
Branching Out (Available in Structural Engineering Special Issue only)
The Cologne/Bonn Airport in Germany is currently undergoing its biggest construction project to date: a $200 million, five-story addition. Close and productive collaboration between the...
Inside Job
River Mill Dam is a large Ambursen (buttress type) dam constructed in 1911 on the Clackamas River in Oregon. The preliminary and final design phase of the seismic upgrade project coincided...
Glass Nautilus
A multi-faceted glass and steel pavilion now adds an extra measure of enjoyment and convenience for visitors to Seattle's Space Needle. The new two-story, 15,000-square-foot...
Quality Check
Composite materials, also known as fiber reinforced polymers (FRPs), have traditionally been reserved for aerospace engineering applications because of their high cost. FRPs'...
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