Evaluation Findings for Tekton, Inc. Steel Rubber Bearings
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. This report summarizes the results of a detailed evaluation...
Evaluation Findings for Scougal Rubber Corporation High Damping Rubber Bearings
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. This report summarizes the results of a detailed evaluation...
Evaluation Findings for Tekton Inc. Roller Bearings
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. This report summarizes the results of a detailed evaluation...
Evaluation Findings for FIP-Energy Absorption Systems, L.C.C. Slider Bearings
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. This report summarizes the results of a detailed evaluation...
Evaluation Findings for Skellerup Base Isolation Elastomeric Bearings
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. This report summarizes the results of a detailed evaluation...
Evaluation Findings for Earthquake Protection Systems, Inc. Friction Pendulum Bearings
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. This report summarizes the results of a detailed evaluation...
Calendar: Bridges 1999 Calendar
Featured bridges are: Cornish-Windsor Covered Bridge (NH); John A. Roebling Bridge (KY); Bollman Truss Bridge (MD); Eads Bridge (MO); Brooklyn Bridge (NY); Manhattan Bridge (NY); High...
Historic American Covered Bridges
Covered wooden bridges are a visual testament to the American spirit. Originally designed with roof-like covers to protect the exposed wood from the effects of sun and rain, these bridges...
Northumberland's Ice Breaker
Extending more than 12.8 km over treacherous waters, the new Northumberland Strait Crossing had to go a long way to finally join the last separate Canadian province to the mainland. Design...
A Bridge Along the Same Lines
Engineers in Tennessee were recently charged with building a new viaduct in an old profile, while at the same time keeping headroom for the trains and keeping off the neighbors'...
Multiplicity (Available only in the Geoenvironmental Special Issue)
When it comes to tracking groundwater contaminant plumes, single completion monitoring wells are the standard choice, but they aren't the only one. After four years of trying...
On Solid Ground (Available only in the Geoenvironmental Special Issue)
On four transportation projects in Portland, Ore., soil nails and micropiles are used as alternatives to conventional earth-retention and foundation systems. The use of soil nails and...
Seismic and Dynamic Analysis and Design Considerations for High Level Nuclear Waste Repositories
This committee report was created to fulfill two primary objectives: 1) to provide guidance for assessing and defining the dynamic loads that must be considered in the design of a repository...
Dampers Hold Sway
In the wake of earthquakes like Kobe and Northridge, structural engineers in seismic design have begun to consider a new tool - seismic dampers. There are many different kinds, though,...
Bulb-Tees Make More Efficient Long-Span Bridges
The bulb-tee girder has helped erect new bridges with fewer I-beams, and is also shown in studies to be a structurally efficient, cost-effective alternative for long-span bridges....
Bridge Bashing
Ships can be dangerous to bridges. Collisions are increasing and costs are considerable. There are ways to reduce the risks, but these cost money, too. A 1993 vessel collision with and...
A Dual Answer to Seismic Stress (Available only in the Structural Engineering Special Issue)
Are two systems better than one? When it comes to high-rise seismic design post-Northridge, the answer may be yes, based on studies conducted by CBM Engineers, Inc., Houston. The aftermath...
A Turnaround for Hangar Design
As the military's airplanes get larger and budgets get tighter, building hangars becomes more of a challenge. But by giving conventional rectangular hangar shapes a 90 degree...
Catchy Culverts
Franklin County, Ohio, installed box culverts in Norman Ditch to prevent flooding of surrounding homes, streets and sewer lines after heavy storms. The design team, given tight deadlines...
Hydraulic Fracturing Advances (Available Only in Geoenvironmental Special Issue)
Removing contaminants trapped in clays and nonpermeable soils can be difficult if not impossible with traditional extraction methods. A look at four hydraulic fracturing case studies shows...
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