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Physical Model Study of Navigation Conditions
This paper describes a physical model study performed to assess the impact of increased flows from a redeveloped hydroelectric generating station on the ability of pleasure boats to navigate...

Hydraulic Modeling of Boating Hazards and Sedimentation?Union Avenue Dam, Denver Colorado
Hydraulic jump type energy dissipators are a hazard to recreational boaters. Many white water boaters have been trapped in 'reverse roller' hydraulic jumps. Numerous...

Waves Generated by Recreational Traffic on the Upper Mississippi River System
Vessels of all sizes, from canoes to 15-barge tows, share the Upper Mississippi River System (UMRS), and every vessel interacts with the river by means of its displacement, propulsion,...

Lime-Fly Ash-Aggregate Base and Subbase Courses
This paper describes the use of lime-fly ash-aggregate (LFA) base and subbase courses for highway pavements. This type pavement course is considered as an alternate to cement treated bases...

Seismic Surgery
The authors describe the installation of seismic isolators in the columns of an eight-story concrete building in Seal Beach, Calif., which serves as Information Systems Center for Rockwell...

Lessons Learned in Southeast United States
The droughts during the decades of the eighties in the southeast were the most severe during the period of record. In addition to the immediate inconvenience they caused, they were precursors...

Water Resources Development vs. Concern for Environmental Protection: Political and Judicial Responses to a Head-On Collision
There are numerous 'environmental laws' that water developers must comply with. These laws can and must be complied with. One response to such laws is to work...

A Comparison of Performances of Various Frictional Base Isolation Systems
The results of a comparative study of the performances of several frictional base isolation devices including the Sliding-Joint, the French System, and the Resilient-Friction isolators...

A KBES for Seismic Design of Buildings
A knowledge-based expert system for earthquake resistant design of buildings is described. The knowledge-intensive nature of the domain and the consequent motivation for an expert-system...

N-Pad?A Three-Dimensional Program for the Analysis of Base-Isolated Structures
N-PAD is a three-dimensional computer program especially written for the analysis of base-isolated structures. The program is designed with the ability to model various types of isolation...

Hydrodynamic Isolation of Concrete Dams
The feasibility of reducing hydrodynamic effects in the earthquake response of concrete dams by anchoring gas-filled balloons or injecting bubbles in the water is investigated. Significant...

Seismic Isolation of Storage Tanks
There has been a significant amount of research activity over the past decade on the seismic design of storage tanks. The seismic design issues and limit states are quite complex due to...

Seismic Isolation of the USC University Hospital
This paper provides an overview of the various structural engineering tasks that are associated with the implementation of the design of a seismically isolated structure. The project is...

Seismic Isolation for the Los Angeles County Fire Command and Control Facility
The use of seismic isolation is becoming an increasingly important consideration in improving the earthquake lifelines of a community. This paper identifies the major problems encountered...

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...

Development of Design Requirements for Seismically Isolated Structures
This paper provides background and describes on-going work by the Structural Engineers Association of California (SEAOC) to develop design requirements for seismically isolated structures....

Recent Developments in Testing Base Isolation Systems
One of these developments has been the ability to test large scale isolation systems using simulated seismic loads. These tests have not only proven the performance and reliability of...

Recent Developments in Isolation Hardware
Most isolation systems have at least two physical components: one specifically intended to add flexibility and the other to control the resulting deflections. However, other elements may...

Seismic Isolation of Nuclear Plants: A World Overview
The French were first to apply seismic isolation to the design of nuclear structures. Two large Pressurized Water Reactor plants (PWR) were isolated; the two unit Koeberg station in South...

Shake Table Testing of a Friction Pendulum Seismic Isolation System
Building models using the Friction Pendulum System (FPS) were tested on the shaking table at the Earthquake Engineering Research Center of the University of California, Berkeley. This...

 

 

 

 

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