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...
Back from the Brink
The Cape Hatteras Lighthouse, the tallest brick lighthouse in the United States, has been moved to prevent it from toppling into the sea as a result of coastal erosion. Engineers from...
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...
Advances in Composite Materials and Mechanics
Recent advances in the development and use of composite materials have renewed interest in the applications of engineering mechanics in this growing field. This proceedings provides a...
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...
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...
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...
Repeated Loading of Stabilized Recycled Aggregate Base Course
The fatigue behavior, resilient properties, and progressive accumulation of damage due to repeated flexural loads on a fiber-reinforced pavement base course material composed of cement-stabilized...
Dam Engineers Go Over the Top
In the 1980s, dam engineers with the Lower Colorado River Authority worried that the Wirtz Dam, near Austin, Texas, would fail in the event of a maximum probable flood. They looked to...
Risk Management at Wahleach Dam
In a first-of-its-kind application, engineers used risk analysis to make event-driven design decisions to evaluate dam safety improvements at Canada's Wahleach Dam in British...
Automated Monitoring at Tolt Dam
As dams age, maintenance needs and safety concerns increase. Dam safety officials are placing greater emphasis on automated instrumentation, monitoring and reporting systems. A look at...
Corrosion Control
As pipe systems with nonwelded joints have become more common, so have problems with corrosion. It's up to designers to carefully consider corrosion issues in order to avoid...
Braced for Failure (Available only in Structural Engineering Special Issue)
Investigations into the collapse of steel-framed structures often focus on minor, insignificant design flaws, only to ignore the real culprit: inadequate temporary bracing. The collapse...
Recycling Penn Forest Dam
Almost since it's construction more than 30 years ago, the Penn Forest Dam had suffered severe seepage, leading officials in Bethlehem, Penn., to wonder how secure their largest...
Balancing Act (Available only in Geoenvironmental Special Issue)
On March 9, 1996, at the Rumpke sanitary landfill near Cincinnati, a precariously overbuilt waste slope collapsed and more than 20 acres of waste slammed into an adjacent excavation site....
Guidelines for Retirement of Dams and Hydroelectric Facilities
Prepared by the Task Committee on Guidelines for Retirement of Dams and Hydroelectric Facilities of the Hydropower Committee of the Energy Division of ASCE. ...
Old Aswan Dam
Egypt's Aswan Dam is almost 100 years old, and engineers performed tests of the masonry, conducting petrographic and chemical analyses. The High and Aswan Dam Authority of...
Construction Safety Affected by Codes and Standards
These five papers present an insight into, and highlights of, some very recent design/construction standardization activities in the US, Canada, Great Britain, Japan and Israel. New performance-type...
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