Revenue Enhancement for Water and Wastewater Systems
This proceedings,
Spanning the Grand Canyon
Replacement of a bridge across the Grand Canyon challenged engineers to create a design in keeping with the area's beauty, history and protected environment. Their answer...
Computer Control of CSOs
Like many older cities, St. Louis has a combined sewer system and is faced with the difficulties of dealing with combined sewer overflows (CSOs). The Metropolitan St. Louis Sewer District...
Fishy Business
Hydroelectric power accounts for about 12% of U.S. electric supply and virtually all the nation's renewable energy capacity. Yet hydro is under increasing attack on environmental...
Argentina: Back in Business
Having achieved democracy and stabilized its economy, Argentina is working to improve its transport, telephone and power systems and to ease its housing shortage; the local construction...
Applying Sustainable Development
Experts hoping to lessen the harsh effects of development on Earth's ecosystem have turned to the concept of sustainable development. Engineers are finding old ways to put...
Scoping the Monitoring Instrumentation to Meet Repository Design and Construction Needs
This paper discusses categories of instruments that are available and recommended for consideration to monitor the engineering performance and interactions of the geologic media, groundwater,...
A Natural Cleanup
For almost 30 years, nonvolatile petroleum hydrocarbons from used motor oil, diesel, gasoline and other automotive fluids had been released to an oil sum at a truck-maintenance facility...
MSA for VOC Removal
In what may be the first large-scale application of its type, mechanical surface aeration�usually used in wastewater treatment�is removing volatile organic compounds from potable ground...
Sampling Sediment on a Complex Site
The remedial design of a complex Superfund site hinged on a variety of sampling methods required by the site's diverse terrain. Cadmium, lead, cobalt and nickel are the culprits...
Large-Scale Earthquake Simulator Study of the Tohoku University Base-Isolated Building
This paper describes a series of earthquake simulator tests of a 1/2.5-scale, base-isolated, three-story, reinforced-concrete building. Three different types of elastomeric seismic isolation...
Recent Developments in Seismic Isolation Technology
Large experimental research projects for isolators for both civil structures and nuclear reactor applications have been conducted at the Earthquake Engineering Research Center (EERC) over...
Nonlinear Dynamic Analysis of Single Point Moored Buoy Under Wave and Current Loadings
In this study, a single point moored spherical buoy under wave and current loadings is analyzed in the time domain considering time memory effects. Geometric nonlinearity of the mooring...
The Effect of Nonlinear Drag PSD on Fatigue of Compliant Offshore Structures
Structural fatigue damage induced by random ocean wave loading on a compliant type of offshore structure is considered. The nonlinear wave force is modeled by the Morison equation and...
Jatiluhur Dam: Problems and Rehabilitation
The Jatiluhur Dam in Indonesia, completed in 1965, is an innovative design consisting of rockfill embankment with a clay core and a vertical cylindrical Intake Spillway. Within the Intake...
Rock Structure in Relation to Concrete Dams on Granite
Granite is often considered to provide an excellent foundation for a concrete dam and a great many dams are thus founded on granitic rocks. Although granitic rocks lack the bedding of...
Prediction of Embankment Dam Breaching for Hazard Assessment
Downstream hazard assessments for dams require prediction of 1) whether a breach could form, and 2) the hydraulic characteristics of the breach for use in calculations of discharge and...
Design Considerations for Raising Existing Dams for Increased Storage
While a number of new dams have been constructed in the United States and other countries in recent years, much of the construction activity related to dams has involved the raising of...
Rehabilitation of Crescent and Vischer Ferry Dams?Construction Techniques & Problem Solutions
This paper reviews some of the problems encountered during the rehabilitation of the Crescent & Vischer Ferry Dams and the techniques used to comply with strict water level regulations...
Michigan Dam Safety Inspection
This paper describes the new dam safety act which took affect in Michigan in 1990. This act provides for regular inspection of almost 900 dams in Michigan that meet the size and storage...
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