Seismic Rehabilitation: Why, When and How
Common methods of seismic rehabilitation are: repair of cracks, reconstruction of structural elements, addition of stiffening elements, and addition of dampers. A major consideration is...
Damage Assessment and Seismic Behaviour of Steel Buildings in Mexico City
Preliminary reports on the September 1985 earthquakes indicated 10 steel buildings collapsed and 2 more severely damaged. The total number of buildings found either collapsed or severely...
Repairing and Strengthening of Reinforced Concrete Buildings Damaged in the 1985 Mexico City Earthquake
This paper describes briefly the criteria and techniques used for the repairing and strengthening of reinforced concrete buildings damaged in Mexico City during the 1985 earthquakes. It...
Thoughts on a Different Approach to Seismic Design Codes
The aim of this paper is to show that some of the principles on which conventional structural design is based are not directly applicable to seismic design. Seismic design, and the corresponding...
Courting Public Opinion
Promoting good community relations is an integral part of hazardous waste projects. Before field investigations are conducted, neighboring communities should be advised of the proposed...
Stopping Seepage
The Navajo Dam in New Mexico has major seepage problems. The Bureau of Reclamation, which owns the Dam, conducted studies, verified by outside consultants, concluding that the combination...
Pressure Injected Footings in Piedmont Profiles
Comparatively little has been published on the behavior of pressure injected footings in the Piedmont residual soils and weathered rocks. It is the purpose of this paper to describe some...
Emergency Response
A spill normally has five phases; namely, the initial emergency response, the site assessment, the development of a remedial action plan, the implementation of the remedial action plan,...
Biological Treatment of Trichloroethylene
Trichloroethylene and related compounds such as cis- and trans-1,2-dichloroethylene and vinyl chloride are common contaminants of ground water in industrial areas. In oxygenated ground...
Chasing Birds from Oil Spills?Two Experiments
Two Canadian studies that addressed different aspects of this problem were conducted in the late 1970's. One was funded by Canadian Marine Drilling Ltd. (Canmar), who was...
The Formulation of a Comprehensive Program to Protect Marine Wildlife Resources During an Oil Spill: A Case Study in Problem Solving Through Private and Public Sector Cooperation
This paper describes a unique experiment in private and public sector cooperation which led to the formulation of a comprehensive program designed to maximize the protection accorded Southern...
Design Considerations for a Navigational Channel
The hydraulic feasibility of the proposed navigation channel from Shuwaikh to the offshore area in Sulaibikhat Bay was studied. Channel width and alignment were determined considering...
Maintaining the Gateway to the Columbia Basin?A Plan for Improvement
Portland District has begun a Maintenance Improvement Program to recommend procedures to reduce annual operations and maintenance costs while providing safe and efficient ship passage...
Satellite-Tracked Buoy Activities in Saudi Arabia
During the pollution threat on the Gulf caused by the collapse of the NOWRUZ oil field well in February 1983, the Meteorology and Environmental Administration (MEPA) established an Oil...
St. George Harbor?A Berm Breakwater Solution in Alaska's Bering Sea
The berm breakwater concept is based on the premise that locally available materials should be used in breakwater construction to the largest degree possible. By looking at failure dynamics...
U.S. Port Commerce in Radioactive Materials (
In the ten-year period assessed, total radioactive materials handled at U. S. ports expanded by over 19,000 tons, which amounts to almost a 173 percent growth rate. This abstract refers...
A Case Study of the CEQ Worst Case Regulation
This paper focuses on a decision by the U. S. Army Corps of Engineers (Corps) not to include a worst case oil spill analysis in the Environmental Impact Statement (EIS) for a proposed...
A Wetland Habitat Assessment Method using Birds
A wetland habitat assessment technique (HAT) using birds as indicators of habitat quality was developed from the method of V. R. Holmes et al. , (1986) and J. W. Graber and R. R. Graber...
Integrated Disposal Studies in San Francisco Bay
The United States Army Corps of Engineers is studying the accumulation of dredged material at the Alcatraz Disposal Site in San Francisco Bay. Alcatraz was chosen for aquatic disposal...
Decisionmaking for Dredggedg Material Management
Management of dredged material produced in coastal environments is greatly complicated by the presence of chemical contaminants in the material. The kinds and quantities of contaminants...
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