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New Support for Pin-Hanger Bridges
To promote safety of their bridges, many state highway departments are considering ways to add auxiliary support to existing pin-hanger bridges. The Pennsylvania DOT and its open-end consultant...

Beyond Engineering: The Politics of Maracaibo
The Lake Maracaibo Bridge in Venezuela was built in 1959. It ranks as one of the largest and longest bridges in the world at the time it was built and contained the longest concrete cable-stayed...

GIS Infrastructure Management and Maintenance Applications of the Future
The use of computer technology has had a dramatic impact on the way we plan, design and manage municipal infrastructure networks. Low cost desktop computers and workstation technology...

The Application of GIS Technology in Planning and Maintaining Distribution and Collection Systems
To date, the use of geographic information in the planning and maintenance of distribution and collection systems has been limited to AM/FM systems. However, the needs of engineers while...

Optimal Scheduling of Advanced Maintenance Dredging
This brief article discusses conventional and new procedures for nourishment of beaches taking advantage of recent years' development of more effective equipment of smaller...

A Decision Support System for Dredging the Lower Mississippi River
The paper describes a decision support system proposed to aid short-term scheduling of maintenance dredging activities on the lower Mississippi River for the New Orleans District of the...

AI Development Environment for the Maintenance of Existing Buildings
A specific structural typology is considered with a deep expertise available on the subject. The 'state of health' of a single building is assessed by an expert...

Methodology for Optimizing Rock Slope Preventative Maintenance Programs
Rock slopes along transportation routes can fail in several different modes, with various types and magnitudes of consequences. The 'risks' associated with such...

Beach Politics?The Importance of Informed, Local Support for Beach Restoration Projects
The increasing utilization of our coastal areas by people and the development attendant to it have resulted in attempts to maintain or stabilize shorelines. In this paper the author emphasizes...

Dune Maintenance
Beach nourishment and stabilization may be achieved through the replacement of sand eroded from the dune. A generalized description of the physical processes and the storm protection benefits...

Environmental Monitoring Systems?A Case Story?The Great Belt
The law passed by the Danish Parliament on the construction of a combined bridge and tunnel across the 18 km wide Great Belt, included an environmental design criteria. This has initiated...

Historical Changes in the Beaches of Los Angeles County
The condition of the beaches of Santa Monica Bay are the result of natural events and man's intervention in coastal processes. This paper reviews events which have shaped...

Coastal Maintenance?The Netherlands
The government of The Netherlands decided in the summer of 1990 to maintain the coastline at the position of 1990. This will be done mainly by artificial beach nourishment. The costs will...

Optimization of Maintenance for Coastal Inlets with Uncertainty
Maintenance dredging costs the nation roughly $400 million per year. Yet, relative to other areas of water resources engineering, little attempt has been made to apply operations research...

Inside the Manhole: New Design on a Leaky Link
Wastewater collection systems represent a major investment for every community, not only in capital dollars, but also in the well-being of community members. Though sanitary sewer manholes...

Composting, Past, Present and Future
Over the past ten years, the composting process has taken on a different look as a method of processing municipal sludge. Today it is one of the most popular and prevalent methods of sludge...

Portland's New Approach to Maintenance
The traditional if it ain't broke don't fix it approach to maintenance was not working for Portland, Oregon's two wastewater treatment plants. By...

New Demands for Hydro Unit Inspection and Preventive Maintenance
As the hydro industry enters the 90's, special interest has been drawn to the fundamental practice of hydro unit inspection and maintenance. New demands on hydropower equipment...

Operations and Maintenance Manual for Bradley Lake Hydroelectric Project
Bradley Lake Hydroelectric Project is located on the Kenai Peninsula of Alaska. The project consists of two 63 MVA turbine-generators fed via a single 3.5-mile-long penstock. The water...

Total Quality Planning
When it comes to major unit maintenance, 'total quality results' require an investment in 'total quality planning.' The successful replacement...

 

 

 

 

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