Test Wall Promises Big Savings (Available in Geo-Environmental Special Issue Only)
A new kind of retaining wall is being tested in Texas at a National Geotechnical Experiment site. The wall is a variation of soil-mixing that uses fewer columns, which saves time, materials...
Grouts and Grouting
A Potpourri of Projects
This proceedings,
Better Salt Storage
Facing tighter maintenance budgets and stringent environmental regulations, many highway departments are designing and building innovative structures to store road salt. One such structure...
Containing Contaminants (Available Only in Geoenvironmental Special Issue)
The Environmental Protection Agency and the Department of Energy are currently in favor of containing contaminants and either remediating on site or simply capping such materials within...
Clear Sailing
Three recent projects--the Conoid Atrium Wall at the Federal Courthouse in Boston, an addition to the U.S. Bureau of Census building in Baltimore, and a new University of Connecticut academic...
Cutting Off Water in Queens
New York's Transit Authority wanted to dig a new tunnel for a Queens subway connection, but first contractors had to wall-off the potentially contaminated groundwater nearby....
Historic Upgrades in San Francisco
The 1989 Loma Prieta earthquake seriously damaged many of the historical buildings that compose the San Francisco Civic Center complex. As the complex serves as a critical cultural and...
In Situ Remediation of the Geoenvironment
The progress in the development and implementation of techniques for the remediation of contaminated soil and ground water has been and continues to be rapid. These proceedings focus on...
Wonderwall
A Superfund site near Seattle was surrounded by a 2,200-ft-long soil-bentonite wall to keep contaminants from entering nearby water sources. An earlier remediation effort had failed to...
Historic Downtown Dilemma (Available only in Structural Engineering special issue)
Many older commercial masonry buildings built of locally quarried stone or fired brick in downtown areas suffer from roof leaks. Because a studwall cavity often is located between the...
Plumbing the Quality of a Sewer System
Consultants in Phoenix were recently charged with assessing the city's sewer system, many feet of which were laid without plastic lining to protect them. Developing a capital...
Re-engineering Cowboy Heaven (Available only in
On a wooded hill overlooking the north end of Oklahoma City sits one of the foremost repositories of this country's Western heritage, the National Cowboy Hall of Fame. Contained...
Translucent Structural Beacon
In East Los Angeles some 2,000 children, teens and adults are accessing their future inside a building that is as high-tech as the computers they are using to learn. The 40,000 sq ft building...
McAlpine Intake Model Study for Innovative Lock Design
The McAlpine Locks and Dam Project is located on the Ohio River near Louisville Kentucky. Construction of an additional 33.53-m-wide (110 ft) by 365.76-m-long (1200 ft) navigation lock...
Propeller Wash Induced Erosion at Quay Walls
The characteristics are examined of the sea bed erosion produced by the scouring action of a ship's propeller wash acting against a quay wall. The rate of development of erosion...
Stochastic Determination of Wave Heights for Flood Control Channels
Physical model data for subcritical and supercritical flow has been collected and analyzed to determine a statistically-based relationship for wave runup heights in a trapezoidal channel....
Bank Protection Toe-Downs and Local Pier Scour
The zone-of-influence for pier scour may impact bank protection toe-down depths. Countermeasures were required at a site along the Salt River in Phoenix, Arizona when the alignment of...
When Toxics Meet Metal
Zero-valent iron is an emerging remediation technology that transforms chlorinated solvents to harmless substances. Engineers and researchers have been studying the process for about five...
Big Business
Prior to the 1990s, there were few mergers in the environmental engineering consulting industry. Growth and profitability were generally sufficient to compensate owners and employees and...
Pile Wall Cuts Off Seepage (Available only in Geo/Environmental Special Issue)
An unusual cutoff wall constructed by the secant pile method succeeded in drying up seepage through the permeable strata below a saddle dam at Beaver Dam in Arkansas, owned by the U.S....
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