A Higher Profile
After an extensive inspection revealed severe corrosion to the substructure of a low-lying bridge over salt water in Norfolk, Virginia, engineers devised a retrofit that included vertical...

Atmospheric Corrosion Resistance of Structural Steels
The main objective of this paper is to provide engineers with data on thickness loss of structural steel members resulting from corrosion. To this end, the writers have collected atmospheric...

Economic Restoration of Concrete Infrastructure at Jefferson Parish, Louisiana
United States municipalities are spending hundreds of millions of dollars annually tore place and repair corroded concrete infrastructures in wastewater systems. Structures such as wet...

Battling Concrete Corrosion
For decades engineers have fought concrete corrosion, but few methods have offered a long-term solution´┐Żuntil now. Electrochemical techniques such as electrochemical chloride extraction...

Ground Attack
Buried surfaces made of concrete, ductile iron and carbon steel are susceptible to corrosion by the soil that surrounds them, but there are numerous ways that these surfaces may be protected....

Positively Not Pedestrian
An elaborate pedestrian and bicycle bridge in Eugene incorporates a number of innovative engineering features to create an aesthetically pleasing structure to complement the surrounding...

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...

Rerouting Boston's Utilities
During construction of the Central Artery/Tunnel project in downtown Boston, engineers had to move utility lines over and under both new and existing infrastructure and maintain utility...

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...

Start the Presses!
Turning an existing bleach manufacturing facility into a printing plant required careful structural design to support a wide range of production processes. The new Daily News facility...

Cable Corrosion in Bridges and Other Structures:
Causes and Solutions
This book provides the reader with basic facts concerning cable corrosion and means to avoid or rehabilitate corrosion damage. Corrosion problems associated with cable-supported structures...

Potential Microbial Impacts on Groundwater Quality
Over the last decade there has been significant progress in the understanding of sub-surface microbiology. The ubiquity of microorganisms within groundwaters forms a major part of these...

Parking Lot Corrosion Cure
The $3 million structural repair and restoration of a large post-tensioned parking structure required engineers to replace 2,400 tendons while keeping the parking garage in service. After...

Evaluation of Corroded Steel Chimneys
The paper is focused on the analysis of corroded steel chimneys. Cylindrical steel plates are exposed to thermal and chemical effects. The study is based on the results of extensive measurements...

Modeling Issues of Copper Solubility in Drinking Water
The paper discusses the application of a model to the solubility of copper in drinking water. This paper is the result of numerous forms of pitting corrosion and pipe failures. Monitoring...

The Effects of NOM and Coagulation on Copper Corrosion
Copper corrosion was examined in solutions containing natural organic matter (NOM) and in situations where NOM was removed by enhanced coagulation with alum or ferric chloride. Electrochemical...

Water Chemistry of Lead Corrosion Control
Requirements of the Lead and Copper Rule (U.S. EPA) makes it necessary for regulators, consultants, and water purveyors to understand the fundamental relationships between water quality...

The Use of Iron Salts to Control Dissolved Sulfide in Districts' Trunk Sewers
Headspace H2S removal via the precipitation of dissolved sulfide was investigated using iron chlorides. Full-scale experiments were conducted in...

A New Basic Principle for a New Series of Hydraulic Measurements. Erosion by Abrasion, Corrosion, Cavitation and Sediment Concentration
The DECAVER is a novel apparatus able to make new measurements in various domains where an erosion is produced in an aqueous medium. It gives the erosion rate and the accumulated erosion....

Design of Stay Cables
Cable stayed structures, consisting of slender superstructure, stay cables and pylons are optimal systems for long span structures with regard to design an economy. The important function...

 

 

 

 

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