Trash Busters ? A Comparison of Screening Structures for Irrigation Systems
Several irrigation districts in the Pacific Northwest have recently installed screening structures for use in removal of trash from canals, rivers, or reservoirs. Some of the screens have...
Design Criteria for Mass Culturing Spirulina Algae
One extract of Spirulina, developed by Dr. Christopher Hills has been used as a nutrient for cell cultures and contains a growth factor called Spirulina Growth Factor. Another extract...
Decay in Wood Structures
One of the main causes of wood deterioration is decay. Decay causes millions of dollars in damage to timber structures each year. Left unchecked, decay deterioration can become a structural...
Environmental Engineering
Over 80 of the papers presented at the 1986 National Convention on Environmental Engineering are included in this book. The major categories covered include air, noise, and radiation management,...
Behavior of Concrete Bulkheads in Salt Drifts
Parameters studies of the behavior of a plug made from expansive concrete have been performed. Such plugs are now being field tested for sealing boreholes, shafts and drifts at an underground...
Structural Design of the Defense Waste Processing Facility
The Defense Waste Processing Facility (DWPF) is designed to process radioactive defense waste sludge and the radioactive nuclides, cesium and stronium, from the salt solution. These radioactive...
A Generic Design for On-Site Low Level Radioactive Waste Storage
This paper describes a generic design for an on-site low level radioactive waste storage facility. The generic design encompases the development of design criteria including an envelope...
Building Arrangement and Site Layout Design Guides for On Site Low Level Radioactive Waste Storage Facilities
This paper will discuss a typical storage facility and address the design considerations and operational aspects that are generally overlooked when designing and siting a low level radioactive...
Nonlinear Analytical Models for Interfacial Plug Stresses in Creeping Salt Formation
Analytical and numerical simulation models are presented which predict the nonlinear time dependent behavior of an expanding plug in a creeping environment heavily dependent on the storage...
Lognormality of Point and Non-Point Source Pollutant Concentrations
This paper presents a series of probability plots of water quality data from a variety of discharge sources. It is intended to provide a visual display of the appropriateness of characterizing...
Bridging the Joints in Bridges
Most bridges are designed with gaps in them. The cracks allow bridges to expand and contract as the temperature changes. But water can enter these gaps and foul bearings and structural...
Constructing a Better Environment
The civil engineer is traditionally designated the jobsite environmental engineer during construction, and is responsible for managing environmental protection and monitoring. Jobsite...
New Runways Take Off
The two mile long runway 9-27, now being constructed at Houston Intercontinental Airport, was built for about 30% ($7 million) less than if designed conventionally. Rather than concrete...
Nuclear Waste Handling and Storage
These papers examine a number of topics related to handling and storage of nuclear wastes and spent fuel as well as some topics related to transportation and long term disposal of nuclear...
Housing and Hazardous Waste Contamination
Problems and Remedies
When hazardous waste sites are discovered in close proximity to residential areas, scientists and engineers are often faced with conducting complex studies involving many government agencies...
Management Lessons from Engineering Failures
Engineering failures are not always catastrophic. More are due to improper management of contracts rather than actual physical failures. Some result in loss of life; most result in disputes...
James B. Francis and the Northern Canal
Lowell became America's first great industrial city because of the power of the Pawtucket Falls and the efforts of an amazing group of engineers, industrialists, and workers....
A Digester Gas Cogeneration Plant at EBMUD
Final testing and start-up of a 4. 3 MW digester gas cogeneration plant has been completed and full-time operation begun at the EBMUD Wastewater Treatment Plant in Oakland, California....
Managing Public Works: How the Best Do It
Management methods of what are considered the best public works organizations are reviewed. Examples of personnel management in some of these organizations include: Fostering the professional...
Trouble in Our Own Back Yard
One million tanks will leak toxic and hazardous substances into the U.S. soil within the next four years. Prevention begins with rapid discovery and probability analysis. Various cleanup...
Return to search