A Dam for a Dam
The General Electric (GE) Dam in Minneapolis, Minnesota, was more than a century old when it began leaking excessively in December 1998. Operations staff for the dam owner—the Minneapolis-based...

Changing Lanes
The Rhode Island Department of Transportation (RIDOT) plans to relocate Interstate 195 in downtown Providence began as a safety improvement project but has since grown into an ambitious...

Water for Ahwatukee
Scheduled for completion in August, the South Mountain Water Facilities pipeline will increase drinking water capacity to the community of Ahwatukee Foothills, a rapidly growing south...

The Submarine Mission
A new Navy engineering and support facility for submarines has been designed and constructed at Lake Pend Oreille, near Bayview, Idaho. The project includes a bridge approach to the facility,...

Metamorphosis
Ranked as one of the 15 tallest buildings in New York, the headquarters of the Bear Stearns Companies, Inc., is a 45-story skyscraper that is 815 ft (248 m) tall. Replacing an existing...

Deep Freeze
In engineering, overcoming a failure can sometimes be more instructive than completing a project with unqualified success. Such was the case with the collapse and repair of a force main...

Twin Crossings
The Hungerford Bridge actually comprises twin pedestrian bridges that are being constructed on either side of an operational 19th century railway bridge over the River Thames in London....

The Excavation
As the largest, most emotionally charged deconstruction effort ever undertaken in the United States comes to a close, the World Trade Center has been reduced to what it was 35 years ago:...

Physical Model of Current-Induced Scour at Ventura Harbor
This paper describes a 1:25-scale movable-bed physical model study of scour resulting from longshore current passing through a narrow gap on the leeside of the detached breakwater at Ventura...

Comparison of Hydrodynamic Parameters for a Floating Breakwater
The U. S. Army Engineer Research and Development Center is in the process of developing a Rapidly Installed Breakwater System (RIBS) for use in Joint Logistics Over the Shore Operations...

Montioring and Modeling of Tandem Breakwater System at Hammond, IN
A tandem breakwater system was constructed in 1989-90 to provide protection for a large marina at Hammond, IN, at the south end of Lake Michigan. A five year monitoring program (1993-98),...

Design and Construction of the Pier J Breakwaters at the Port of Long Beach, California
Several different alternatives to mitigate surge activity were investigated. The most acceptable solution was a pair of new breakwaters that altered the basin geometry to change the basin...

Construction Factors and Monitoring Methods Relating to the Performance of Ventura Breakwater Core Loc Repair
In 1999 the Los Angeles District of the U.S. Army Corps of Engineers (USACE) repaired the north Ventura breakwater head. The head was rebuilt using 2-ton underlayer stone armored with...

St. George Habor—Berm Breakwater Construction Considerations
During the period 1984-1987 three berm breakwaters with a total length of approximately 800 meters were constructed at St. George Harbor on St. George Island in the Pribil of Chain of...

Application of Multibeam Echo Sounding and Side Scan Sonar for Mapping of Shoreline Protection Revetments
The use of multibeam survey methodology coupled with high precision positioning systems for the mapping of shoreline protection features and the adjacent offshore areas allows development...

Predicted Service Life of Armor Stone: A Case History
Laboratory testing for determination of true rock quality in terms of expected performance is not clear-cut, may be misleading, and requires extensive interpretation by an expert. This...

Strength from Within
After decades of being continuously struck by rockfalls and wayward vehicles, Knapps Hill Tunnel—a highway structure built in 1936 and located on state Route 97A in central Washington...

An Arbor for Art
The new $50-million, 153,000 sq ft (14,200 m²) building for the Modern Art Museum of Fort Worth will provide the museum with more than five times its current gallery space. The design...

Repeat Performance
Working with a budget of $10 million, engineers designing a new high-rise residential structure in New York City had to find creative ways to control costs. One budget-saving idea was...

Big Idea
The reconstruction of the Big I—the intersection of interstate routes 25 and 40 in Albuquerque that was named for its appearance from the sky—was likely to disrupt commuters and interstate...

 

 

 

 

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