The Application of Seismic Isolation to Bridges
Unlike a building application the primary intent in a bridge is to protect the structure below the plane of isolation - the superstructure being relatively rigid to in-plane loads and...
Retrofitting Existing Seismically Hazardous Buildings
This paper presents a brief overview of the types of problems encountered in retrofitting of existing seismically hazardous buildings. Included is a description of the various types of...
Study of the Seismic Behavior of Retrofitted Reinforced Concrete Buildings
Over ten years experimental research in Japan on the seismic behavior of retrofitted reinforced concrete buildings is reviewed. Emphasis is put on the improved strength and/or ductility...
Seismic Repair, Restoration and/or Upgrading of Existing Buildings
The ultimate goal of this paper is to discuss the selection of the most efficient (optimal) strategies and techniques for upgrading an existing building. To achieve this goal, it was considered...
Concrete Removal Techniques with Potential for Use in Rock
This paper describes concrete removal techniques that were employed in the rehabilitation of US Army Corps of Engineers mass concrete structures and are thought to have potential for limited...
Presented in 3-D
Stone & Webster started development in 1985 on a mainframe based computer system that provides the capability to integrate all plant information into a single integrated plant...
Cincinnati's Dream Team
For years, the cries of Cincinnati's Public Works Department and its civil engineers for infrastructure repair fell on deaf ears. In 1986, Mayor Charles Luken tried a new...
Probabilistic Approaches to Maintenance
All structures and their components are subject to the aging process, to wear and tear in the performance of assigned functions and to deterioration by exposure to the operating environment....
Intake Towers and Outlet Tunnels Adapted for Hydro
An intensive design project was undertaken with the objective of retrofitting two U.S. Army Corps of Engineers (COE) dam sites for hydroelectric power generation. The challenge of designing...
Analysis and Rehabilitation of Ambursen Dams
This paper deals with the investigation and analysis of two Ambursen dams located in the upper Midwest. These investigations revealed that the original design contained significant defects,...
Dam Rehabilitation and Fish Lift Design at the Pejepscot Hydroelectric Project
The rehabilitation work on the existing rockfilled timber crib dam comprised an assessment of the existing dam stability; analysis of the existing hydraulic conditions to establish the...
Balancing Hydropower Development in the Ohio River Basin
A large number of retrofit hydroelectric projects have been proposed at existing navigation dams in the Ohio River basin. These proposals involve potentially adverse environmental impacts,...
Bonneville I Powerhouse Station Service Unit Rehabilitation
This paper presents the work being done towards the rehabilitation of the Bonneville I station service unit. The rehabilitation of this unit includes a generator rewind, excitation system...
Characteristics of the Independent Turbine Testing Facility
The Independent Turbine Testing Facility (ITTF) located at the St. Anthony Falls Hydraulic Laboratory has recently undergone extensive upgrading, partially funded by a grant from the small...
Retrofitting of Hydro Electric Generators with Bus Fed Solid State Excitation Systems
The Northern Hydro Division has completed retrofitting the excitation systems on 22 generating units ranging in output from 1 to 95 MWatts. The Big Creek Hydro Project upgraded these systems...
Hydroelectric Generator Rewinding Pitfalls and Means to Ensure Success
The failure or success of generator rewinding begins well before the actual rewind, and many of the pitfalls can be avoided if owners take some very important steps prior to the rewind...
Case Study in the Rehabilitation of a Pumped/Storage Installation - Salina Powerhouse Grand River Dam Authority
This paper presents a specific case study in the rehabilitation of a pump/turbine for the Grand River Dam Authority at its Salina plant. The study addresses problems such as cavitation...
Crescent and Vischer Ferry Hydroelectric Redevelopment Projects
The owners of aging small hydro plants face a myriad of complex technical, economic, and regulatory challenges as they seek to reliance and prepare their projects for continued operation...
Buffalo Bill Dam Modifications?Modification of an Existing Bureau of Reclamation Facility to Increase Power Generation
This paper describes a joint venture between the United States Bureau of Reclamation and the State of Wyoming to increase the storage capacity and power generation capacity of Buffalo...
Safer Dams
During the last 11 years, thousands earth dams have been inspected. Here are four that were rehabilitated. Army Corps inspections are phase I of the program, and have been completed. The...
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