Big Trouble in Little America
Traditionally, rural communities in the U.S. have relied on septic systems to treat their wastewater. Many of the nation's 23 million septic systems, however, are failing....
Putting Waste to Use
Although it's only been nine years since Superfund was passed, a traditional hazardous waste disposal process has nontheless been established. That is, wastes are taken to...
Training the Waste Watchers
Whether an engineer is going to work at a Superfund site himself, or if his firm will be doing cleanup work at the site, that engineer will want to take the 40 hour training course as...
SPIDA Method for Reinforced Concrete Pipe Design
The required supporting strength of buried pipe is affected by the total load that is imposed upon the pipe and the manner in which the pipe is supported by the surrounding soil. The installation...
Segmental Tunnel Lining Meets `Buy American'
Segmental concrete tunnel lining is the other innovation proven during construction of the Washington Metropolitan Area Transit Authority (`wmata'). Although `wmata's'...
Resilient Moduli of Soils
Laboratory Conditions
Historically, structural pavement design has been based on static testing techniques, such as the CBR. More recently, the profession has placed increased emphasis on repeated load testing...
Selection of Consultants for Municipal Water/Wastewater Projects
The City of Dallas, Texas Water Utilities Department is responsible for the design and construction of all needed water and wastewater facilities including treatment plants, pump stations,...
Channel Tunnel, Texas Style
Two water supply pipelines under the Houston Ship Channel and Greens Bayou are an example of deep tunneling in soft ground. The navigable waters and the water-bearing silty soils in the...
Stabilizing a `Mann'-Sized Sinkhole
On Sept. 21, 1988, a sinkhole suddenly developed beneath a transmission/distribution effluent pipeline on Mann Road in Orange County, FL. Initially it measured 30 ft in diameter and 8...
Augering Answers
Leaking storage tanks, a long time environmental problem, are now being addressed nationally with cleanup regulations. Clearly, inexpensive and quick remediations are needed. This article...
Beam-Supported Slabs Subject to Edge Loading
A model is presented which allows a designer to estimate stiffnesses required to provide a given critical buckling load in beam-supported slabs subjected to biaxial edge loading, such...
Arbuckle Mountain Hydro Vertical-Axis Fish Screens
Fish screens to exclude small fry and debris at remote sites such as Arbuckle Mountain Hydroelectric Plant post unique design considerations to satisfy criteria established by fisheris...
Field Experiences in Improving Water Quality Downstream From Dams
Recent experiences by the Tennessee Valley Authority in improving water quality and fish habitat downstream from dams are presented. At Douglas Dam, floating pumps near the surface of...
Reservoir Releases Improvements?Requiem for Integrating Pollution Control and Resource Management Programs?
To better define the interrelationships between economic growth and development, pollution control, and water resource management, TVA conducted two studies that examined how reservoir...
Repair of The Hinckley Dam Embankments
The New York Power Authority was licensed in 1982 to construct and operate a 9 Mw hydroelectric facility at the existing Hinckley Dam near Utica, New York. Soil exploration programs undertaken...
Modern Technology in an Ancient Environment?The Answan II Power Plant
The Aswan II power plant is located at the old Low Aswan Dam in Southern Egypt. This dam was constructed in the early years of the century in order to provide irrigation water for cash...
The Stanley Canyon Conduit Hydroelectric Project
The Stanley Canyon Hydroelectric Project is an excellent example of the maximum use of a natural resource. The project is a combined water supply and hydroelectric facility which received...
The European Underground
Three tunneling projects in Europe are described: a tunnel bored under two rivers in Lyon, France, a subway station constructed as a mined tunnel in Vienna, Austria and a tunnel mined...
Sewage Plant Engineered for Value
The Camden County (NJ) Municipal Utilities Authority was formed in 1972 to cope with suburban growth that had overloaded 34 primary treatment plants. By the early 1990s, the Authority...
Cedar Falls Roller Compacted Concrete Dam
This paper presents the design, material testing, quality control, and construction considerations applicable to a small Roller Compacted Concrete (RCC) dam. The Cedar Falls RCC dam is...
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