Wetlands Treat Mine Runoff
Engineers were asked to design a treatment system for the severely acidic drainage from the Mike Horse and Anaconda metals mines in Montana. Challenges included the mountainous terrain,...
Weighing Anchors
Modern anchorage systems offer design engineers and contractors unprecedented choice in load transfer mechanisms. Some anchors are highly specialized, while others are appropriate for...
Evaluation Findings for Dynamic Isolation Systems, Inc. Elastomeric Bearings
This report,
Evaluation Findings for R.J. Watson Sliding Isolation Bearings
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. This report summarizes the results of a detailed evaluation...
Pipe Up
The East Bay Municipal Utility District (EBMUD) provides potable water for approximately 1.2 million people in San Francisco's East Bay area and is constructing seismic upgrades...
Bridging Substance with Style
Engineers used an elegant form to come up with a functional solution when designing the new Damen Avenue Arch in Chicago. Two steel ribs, created using heat induction bending, closely...
Holding Court
Contractors had their work cut out for them when structural engineers specified concrete-filled steel tubes for the Thomas F. Eagleton Federal Courthouse's perimeter columns....
Glass Rebar's Growing Pain
Although engineers have used glass fiber reinforced polymer (GFRP) reinforcing bar in applications as diverse as winery roofs and bridge decks, a lack of standards and understanding by...
Isolating the Arts
The LG Kangnam Building in Seoul, Korea, is a multi-use, 140,000 sq m project, consisting of a 40 story, 183 m tall office tower, an adjacent 9-story acoustically base-isolated performing...
Structural Surgery
Structural engineers had to transform four existing buildings and two new buildings into a new non-profit center for Jewish history. The buildings were of varying ages and had different...
Casting Their 'Net
Small engineering firms are exploring new markets, winning clients and bringing in fresh talent�all through their company web pages. Executives from small firms around the country talk...
Cable Access
By moving the expansion joints off the main, cable-stayed span and creating innovative cable connections and tower configurations, Parsons Brinckerhoff Quade & Douglas Inc. (PB)...
Monitoring Construction Vibrations (Available in Geoenvironmental Special Issue only)
A review of procedures, criteria and equipment used to protect buildings and other structures from construction generated vibrations, the article begins by describing the importance of...
Betting on the Baseline (Available in Geoenvironmental Special Issue only)
In construction contracts, new deductive differing site conditions (DSC) clauses provide for credits to owners when contractors encounter better-than-anticipated subsurface conditions....
Walled In (Available in Geoenvironmental Special Issue only)
Of the many challenging aspects of the $10.8 billion, 7.5 mi long Central Artery Project in Boston, the construction of soldier pile, tremie concrete (SPTC) walls under the existing elevated...
Acting Alone
Wired Up
Redesign Responses
Road to Nowhere?
Earthquake Engineers
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