Dam Breaching: The Rest of the Story
The U.S. Army Corps of Engineers is evaluating the possibility of breaching four dams on the lower Snake River to improve salmon migration. Because significant infrastructure modifications...
Analysis, Design, Construction, and Testing of Deep Foundations
This proceedings,
Stepwise Flood Routing for Gated Reservoirs and Conjunctive Optimization of Hydroelectricity Income with Flood Losses
A six-stage operation policy for routing of flood hydrographs of return periods from 1.01 year up to the Probable Maximum Flood (PMF) for dams having gated spillways is suggested. The...
Traditional Engineering Takes a Turn for the Future Decommissioning Dams and Restoring Ecological Integrity
(No paper) This paper will address the emerging shift evaluating the true value of dams and the importance of including the costs of the initial construction and investments required for...
Sizing Up Seismic Bearings
Today in the U.S., there are two general technologies available to protect new and existing bridges from the damaging effects of earthquakes. One type, seismic isolation bearings, provide...
Catch the Wind
Wind turbines can now produce energy that is cost-competitive with other, more conventional power generation methods. The increased efficiency is due in part to the turbines'...
Instrumentation of Embankment Dams and Levees
Technical Engineering and Design Guides, as adapted from the U.S. Army Corps of Engineers, No. 26. Whether analyzing data to determine the competency...
For the Duration
The U.S. Army Corps of Engineers developed a new grouting method called duration grouting when constructing the foundations for the Portugues Dam in Ponce, Puerto Rico. The site is marked...
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,...
Over the Top Concrete
The 60-year-old Tongue River Dam in southeastern Montana is undergoing extensive dam safety and reservoir enlargement modifications. Major features of the project include a 60,000 cfs...
Inviting Trouble Downstream
When dam-building advocates, representing power generation, irrigation and flood control interests, get their project built, flood control ranks third in priority. Soon, development encroaches...
Interest in Deposits (available only in Geoenvironmental Special Issue)
Sediment accumulating in reservoirs worldwide is gradually reducing storage capacity, posing a long-term threat to supplies of drinking and irrigation water. The buildups also highlight...
Rock Dam Revitalization
Sometimes restoring an area to a natural appearance requires a little artificial help. When the city of Longmont, Colo., began creating the St. Vrain Greenway, a park and recreation area...
Preparing for Pier A
Earthquakes, oil wells, contamination and unstable soil were among the challenges engineers faced as they prepared a site at California's port of Long Beach for the Pier A...
Inspecting the Unknown (Available in Geo-Environmental Special Issue Only)
Unknown foundations have plagued civil engineers for years. In the case of underwater pilings, much time and money is spent inspecting for cracks, breaks or deterioration. Even then, visibility...
The Deep (Available in Geo-Environmental Special Issue only)
Despite a mere 1,500 ft separation, Baltimore's Oriole Park at Camden Yards and Ravens Stadium required vastly different deep foundation solutions. While Oriole Park is founded...
Rebuilding History
Deterioration of the second-oldest multiple-arch masonry viaduct in the country�in Canton, Mass.�threatened its ability to continue carrying Amtrak's Northeast Corridor trains,...
Geosynthetics in Foundation Reinforcement and Erosion Control Systems
The variety and number of applications of geosynthetics in goetechnical engineering continues to grow rapidly. This proceedings focuses on two specific applications: soil reinforcement...
Shake, Rattle and Hold (Available in Structural Engineering Special Issue Only)
In-situ lateral load tests of two bridge bents were conducted on Interstate 15 in Salt Lake City, Utah, to determine the strength and ductility of an existing concrete bridge and the improvements...
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