Preparing for Takeoff
New Hampshire's Manchester Airport laid the groundwork for steady grwoth with a set of infrastructure projects including the construction of a parking garage, a terminal expansion,...
A Better Barrier
Seepage problems have troubled the Walter F. George Lock and Dam, on the Chattahoochee River, for more than 40 years. Construction of a deep positive cutoff wall is nearing completion,...
Work of Art
Cincinnati's new art center is being lauded for its structural animation and innovative use of form. Rendering this sculptural edifice in concrete and steel within a limited...
Restoring PATH
Service from northern New Jersey to lower Manhattan on the Port Authority Trans-Hudson (PATH) commuter rail system will soon be restored thanks to a speedy rehabilitation of tunnels and...
Holding Up
Now that the redevelopment of the World Trade Center site is under way, the time is right to examine the status of the remaining slurry wall foundation system and consider how future construction...
Keeping It Rolling
Thanks to a complex construction staging scheme and a temporary tieback support system, workers were able to rehabilitate an aging rolling lift bridge in Boston....
The Big Dig's Big Dig
Widely recognized as the most demanding component of Boston's Central Artery/Tunnel Project, the tunnel jacking work performed beneath operating rail tracks represents a quantum...
Joining Forces
In times of limited funding, roads and mass transit are sometimes seen as competing interests, but in Denver the two are united in a massive effort to reinvent an aging and congested transportation...
Enduring Strength
The long-term effectiveness of posttensioning in bridges depends on the resiliency of the tendons, and various factors related to construction and marine environments come into play. How...
Northeast Passage
It will take a deft hand to manage the many aspects of this massive highway and mass transit project along interstate 95 in Connecticut. CAreful construction staging and detailed traffic...
Ramping Up
The reconstruction of the Sprinfield interchange, also known as the Mixing Bowl�one of the largest, most complex highway projects in the nation�has reached the halfway point. But some...
Island in the Mur
Floating atop an immense pontoon like a shimmering seashell, this elliptical island of steel and glass in the middle of an Austrian river�an inventive, unconventional bridge�was designed...
Under Cover
In capping a 190-acre hazardous landfill in metropolitan Los Angeles, engineers saved time and money by relying on a construction method seldom used in the environmental sector: design/build....
Worthy Successor
Now under construction, the replacement for Florida's Hathaway Bridge, which crosses St. Andrew Bay in Panama City, will more than double the capacity of the existing structure....
Sediment Remediation at the Unnamed Tributary to the Ottawa River
A sediment removal action was conducted in the Unnamed Tributary to the Ottawa River to address sediments containing polychlorinated biphenyls(PCBs) at concentrations up to 74,000 mg/kg....
Measuring Productivity: An Industry Challenge
Is the design and construction industry more productive today than it was a decade ago? Is it matching the achievements in productivity attained by other industries? Are technological...
An Unconventional Approach
Conceived to resemble a series of covered suspension bridges, Pittsburgh's new $370-million David L. Lawrence Convention Center boasts a cable-supported stainless steel roof...
Can Less Be More?
With its higher strength and improved performance characteristics, high-performance steel is indeed an alluring materials. Its cost, however, also is higher, a factor that cannot be ignored....
Failures and Problems with Lift-Slab Construction
This chapter provides an overview of failures and problems with lift-slab construction. Topics include jack systems with inadequate take-up devices; the Canadian wedge connection; Serra...
Lifting Collars and Lifting Equipment
The terms lifting collars and shear heads are used interchangeably in the industry. In this book the term lifting collar is used since it is a unique term applicable to lift-slab construction...
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