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Articles 32791 - 32820 of 39981

Full-Text Articles in Engineering

Development Of An Effectiveness Model Or Metric For The Air Force Environmental Compliance Assessment And Management Program (Ecamp), Craig B. Dezell Sep 1993

Development Of An Effectiveness Model Or Metric For The Air Force Environmental Compliance Assessment And Management Program (Ecamp), Craig B. Dezell

Theses and Dissertations

The Department of Defense (DoD) and the Air Force (AF) are committed to being national leaders in protecting and enhancing the environment and achieving environmental compliance. This commitment is exemplified by the Air Force Chief of Staff's goal of no notices of violation (NOVs). However, the number of AF NOVs from 1990-1992 rose from 103 to 178 an increase of 73 percent. A July 1992 AF Inspector General Report also concluded that Environmental Compliance Assessment and Management Program (ECAMP) findings were not being effectively utilized by the Major Commands (MAJCOM). To aid AF leaders in solving these problems, and protecting …


Development Of A Multicriteria Decision Model For Prioritizing Air Force Environmental Restoration Program Projects, Thomas E. Ellingson, T. G. Gallogly Sep 1993

Development Of A Multicriteria Decision Model For Prioritizing Air Force Environmental Restoration Program Projects, Thomas E. Ellingson, T. G. Gallogly

Theses and Dissertations

Cleaning up hazardous and toxic wastes left from past activities has become one of the major goals of the Department of Defense. Within the Air Force, individual major commands (MAJCOMs) annually review numerous projects submitted under the Defense Environmental Restoration Program (DERP) and forward these projects to HQ USAF/CEVR for funding. Until recently, adequate resources have been available to fully fund all projects. However, within the last two years, funding shortfalls have been experienced, and projects have received only partial funding. The Air Force needs a decision support system that will assist in determining funding priorities for these projects. This …


A Strategy For Combining The Pollution Prevention Opportunity Assessment With The Environmental Compliance Assessment And Management Program, Stacy E. Gent Sep 1993

A Strategy For Combining The Pollution Prevention Opportunity Assessment With The Environmental Compliance Assessment And Management Program, Stacy E. Gent

Theses and Dissertations

This research develops a method to allow an installation environmental function to satisfy the assessment requirements of both the Air Force Pollution Prevention and the Environmental Compliance Assessment and Management Program with the implementation of one assessment process. The model developed is designed to achieve the goals of both programs while increasing the efficiency of implementation. The resulting assessment model formulated within this research is applied on a theoretical level to yield preliminary results. These results indicate that the combination of the Pollution Prevention Opportunity Assessment and the environmental compliance assessment required by the Environmental Compliance Assessment and Management Program …


A Study Of Investigation-Derived Waste Management Options, Barry C. Mountain Sep 1993

A Study Of Investigation-Derived Waste Management Options, Barry C. Mountain

Theses and Dissertations

USAF is dedicated to the clean up of past releases of hazardous substances at its bases under the Installation Restoration Program (IRP) . Clean up decisions are based upon data produced from investigations. Large amounts of waste may be derived from investigations. Investigation-derived waste (IDW), especially that with a hazardous component, may pose significant health protection and regulatory compliance problems if neglected. This study identifies the status and the need for improvement of IDW management to avoid those problems. Information on the background of IDW management was collected through a review of environmental laws, waste management regulations, and existing guidance. …


An Analysis Of Site Parameters Affecting Natural Attenuation In Saturated Soil, William H. Potts Sep 1993

An Analysis Of Site Parameters Affecting Natural Attenuation In Saturated Soil, William H. Potts

Theses and Dissertations

This study investigated the natural attenuation mechanisms and some of the parameters affecting those mechanisms in the saturated zone. A literature search revealed numerous studies of various attenuation and the associated parameters. Much of the literature emphasized biodegradation as the most promising attenuation mechanism. BIOPLUME II(TM), a fate and transport model, was used to simulate the fate and transport of contaminant plume. The effects of the model parameters were investigated by observing the distance a contaminant plume was expected to migrate over a fifty year period. The investigation was limited by the model which excludes chemical reactions and some physical …


Application Of The Simplified Dow Chemical Company Relative Ranking Hazard Assessment Method For Air Combat Command Bases, Raymond A. Sable Sep 1993

Application Of The Simplified Dow Chemical Company Relative Ranking Hazard Assessment Method For Air Combat Command Bases, Raymond A. Sable

Theses and Dissertations

This study investigates the possibility of determining the hazard potential of chemicals on Air Force bases using a relative ranking hazard assessment method. Hazard assessment includes identification of hazards and evaluation of the hazards. Title III of the Superfund Amendments and Reauthorization Act of 1986 requires hazard assessments by all facilities with extremely hazardous substances to prepare release prevention plans. The purpose of the hazard assessments is to provide information to improve the spill prevention, control and countermeasures plans and to identify the substances with the highest hazard potential. Using the results from the hazard assessments, bases cam prepare plans …


A Feasibility Study Of Burning Waste Paper In Coal-Fired Boilers On Air Force Installations, Kenneth P. Smith Sep 1993

A Feasibility Study Of Burning Waste Paper In Coal-Fired Boilers On Air Force Installations, Kenneth P. Smith

Theses and Dissertations

This thesis examined the feasibility of using waste paper derived fuel in coal-fired boilers on Air Force installations in an attempt to help solve air pollution and solid waste disposal problems. The implementation of waste paper derived fuel was examined from both a technical acceptability and an economic feasibility viewpoint. The majority of data for this study was obtained through literature reviews and personal interviews. Waste paper was found to be technically acceptable for use as fuel. However, waste paper has certain characteristics that may create problems during combustion and therefore further research is required. These problems included the possibility …


Development Of A Cost-Effectiveness Methodology To Prioritize Environmental Mitigation Projects, Robert E. Thompson Sep 1993

Development Of A Cost-Effectiveness Methodology To Prioritize Environmental Mitigation Projects, Robert E. Thompson

Theses and Dissertations

A cost-effectiveness prioritization methodology was developed using concepts from the cost-effectiveness technique. The new methodology called the Cost-Effectiveness methodology (CEM) allows the prioritization of mitigation projects across broad categories of hazardous sites as would be ranked among the offices of the Environmental Protection Agency. Two performance criteria were incorporated into the process--rank projects that save the most lives per dollar and enhance general applicability across different categories of risk. A metric was developed that represents the ratio of lives saved per dollar spent on mitigation alternatives of contaminated environmental sites. This metric was incorporated into the CEM to distinguish mitigation …


A Guide To Implementing Reclamation Processes At Department Of Defense Municipal Solid Waste And Construction Debris Landfills, Gregory L. Tures Sep 1993

A Guide To Implementing Reclamation Processes At Department Of Defense Municipal Solid Waste And Construction Debris Landfills, Gregory L. Tures

Theses and Dissertations

This thesis serves as a guide for implementing landfill reclamation techniques on municipal solid waste or construction debris landfills owned, operated, or used by the DoD. The research describes historical and current methods for disposing of solid waste including open dumping, sanitary landfilling, and the development of state-of-the-art sanitary landfill cell technology. The thesis also identifies the factors which have led to the need for new methods of managing municipal solid waste. The vast majority of the study is devoted to identifying actions which should be taken before, during, and after implementation of a landfill reclamation project. These actions include …


A Plan For Coordinating Department Of Defense Emissions Trading, Charles H. Weir Sep 1993

A Plan For Coordinating Department Of Defense Emissions Trading, Charles H. Weir

Theses and Dissertations

The original purpose of this research was to develop a plan to coordinate emissions trading between DoD installations. During the course of this research, findings indicated that restrictions on emissions trading would make such a plan of limited applicability. However, findings did indicate the need for a tool to assist managers with selecting the netting, offset, and banking emissions trading alternatives. Developing this tool became the objective of this research. This objective was fulfilled by developing a management guide to assist environmental managers with selecting the emissions trading alternatives netting, banking, and offsets. Background information was collected by examining literature …


Analysis And Development Of An F-5 Pollution Prevention Management Program With Recommendations For Creation Of Similar Programs For Other Aircraft, Janice M. Gavern Sep 1993

Analysis And Development Of An F-5 Pollution Prevention Management Program With Recommendations For Creation Of Similar Programs For Other Aircraft, Janice M. Gavern

Theses and Dissertations

This study developed a pollution prevention program for the F-5 aircraft, and described its utility and applicability as a generic framework for similar programs. A representative set of F-5 technical orders was analyzed by hand, and the identified chemicals, materials, and processes were loaded into a spreadsheet data base for additional analysis. The Environmental Protection Agency EPA 17 chemical list, and lists of ozone depleting chemicals (ODCs) were used as criteria to identify, for minimization, reduction, or elimination from use on the F-5, a hazardous material (hazmat) subset of those chemicals and materials which had already been identified. The identified …


Ccfss Technical Bulletin August 1993, Wei-Wen Yu Center For Cold-Formed Steel Structures Aug 1993

Ccfss Technical Bulletin August 1993, Wei-Wen Yu Center For Cold-Formed Steel Structures

CCFSS Technical Bulletins (1993 - 2020)

No abstract provided.


Ccfss News August 1993, Wei-Wen Yu Center For Cold-Formed Steel Structures Aug 1993

Ccfss News August 1993, Wei-Wen Yu Center For Cold-Formed Steel Structures

CCFSS Newsletters (1999 - 2008)

No abstract provided.


Seismic Analysis Of The Brent-Spence Bridge, Issam E. Harik, David L. Allen, Ronald L. Street, Meiwan Guo, R. Clark Graves, Jack A. Harison, Mark J. Gawry Aug 1993

Seismic Analysis Of The Brent-Spence Bridge, Issam E. Harik, David L. Allen, Ronald L. Street, Meiwan Guo, R. Clark Graves, Jack A. Harison, Mark J. Gawry

Kentucky Transportation Center Research Report

This report presents the findings of a seismic evaluation of the Brent-Spence bridge. The bridge is a double-deck cantilever through truss which was constructed in 1961; it is a critical highway link conveying 1-75 over the Ohio river. While not yet subjected to a moderate or major earthquake, the bridge is within the influence of the New Madrid, Wabash Valley, and Anna seismic zones.

The seismic evaluation program consisted of field testing and seismic analysis. The vibrational properties of the main bridge were determined through field testing and used to calibrate a 3-D finite element model. The model was then …


Flowable Fill, Herpicc Aug 1993

Flowable Fill, Herpicc

Indiana Local Technical Assistance Program (LTAP) Technical Reports

This publication supplies information on Controlled Low Strength Material (CLSM) and performance related to material characteristics and mixture properties.


An Energy Approach To Seismic Analysis And Design Of Secondary System, Genda Chen, Tsuteh Soong Aug 1993

An Energy Approach To Seismic Analysis And Design Of Secondary System, Genda Chen, Tsuteh Soong

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The dynamic analysis and design of secondary systems have been extensively studied over the last two decades, resulting in a better understanding of their general dynamic characteristics. One of the current challenges for researchers is to develop simple yet accurate procedures incorporating these research results and transfer them into the development of practical design and performance evaluation procedures. This is the basic thrust of this report.

Statistical energy analysis has been proven to be a powerful tool in the dynamic analysis of complex systems involving interaction effect between acoustic field and structure. In this report, such a tool is systematically …


Economic Analysis Of Costs Incurred From Chemical Exposures In The Workplace Resulting In Non-Carcinogenic Responses As Additional Justification For Pollution Prevention Projects, Michael L. Forcht, Timothy D. Neu Aug 1993

Economic Analysis Of Costs Incurred From Chemical Exposures In The Workplace Resulting In Non-Carcinogenic Responses As Additional Justification For Pollution Prevention Projects, Michael L. Forcht, Timothy D. Neu

Theses and Dissertations

This research determines the applicability of using costs associated with chemical exposures in the workplace for financial justification of pollution prevention projects. Specifically, this thesis looks at costs incurred due to noncarcinogenic effects caused by chemical exposures. Average costs are determined through researching applicable statistical cost data. Acute effects are analyzed using an analysis of available statistical accident data from multiple sources. Expected values are then calculated based upon the projected cost of an accident and the probability of having an accident. Chronic effects are analyzed using an empirical analysis. A risk assessment is used to determine the likelihood of …


Effect Of Reduced Plate Width On The Structural Behaviour Of A Triangularly Folded Plate Barrel Vault, S Manyele Jul 1993

Effect Of Reduced Plate Width On The Structural Behaviour Of A Triangularly Folded Plate Barrel Vault, S Manyele

Tanzania Journal of Engineering and Technology (TJET)

Various methods of analysis have been employed to predict the  structural behaviour of the Triangularly Folded Plate Barrel  Vault, with conflicting results. A review of past analytical  and experimental investigations carried out on the structure  show that theoretical analysis based on a smaller effective  width rather than the overall plate width is capable of closely  predicting the deflection behaviour of the structure.  This paper presents an experimental study of the behaviour of  a triangularly folded plate barrel vault with physically reduced  plate width.  It is found that physical reduction of the plate width to  correspond to ‘theoretical’ effective width weakens …


Optimal Contaminant Plume Management With Us/Wells, Alaa H. Aly, Richard C. Peralta Jul 1993

Optimal Contaminant Plume Management With Us/Wells, Alaa H. Aly, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

A micro-computer based software package developed at utah State University for computing optimal pumping strategies for well systems (US/WELLS) is demonstrated. US/WELLS is used to determine the optimal time-varying sequence of extraction and injection rates when only limited data is available. The software determines the extraction/injection rates, in pre-specified locations, needed for immobilizing and/or extracting a groundwater contaminant plume. In the optimization problem, the objective function can be either to minimize the extraction/injection rates needed {linear) or to minimize the hydraulic power used for lifting water (quadratic). In either case, different weights can be assigned to emphasize any time period. …


Optimizing Conjunctive Water Use In A Dynamic Stream Aquifer System, Getachew Belaineh, Richard C. Peralta Jul 1993

Optimizing Conjunctive Water Use In A Dynamic Stream Aquifer System, Getachew Belaineh, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

Long-term water management planning models frequently use large time steps and must employ fairly crude assumptions (such as average climatic conditions, etc.). Managing stream aquifer systems during a dry season requires using finer discretization in time and space. Presented is a computer model, US/REMAX, developed by Utah State University personnel for aiding best management of stream-aquifer systems for both long and short eras. The model computes strategies for optimally allocating surface and ground water resources in time and space. For a water supply problem the model can maximize the sum of delivered surface and ground water. For an environmental protection …


Design Of Automotive Structural Components Using High Strength Sheet Steels Effect Of Strain Rate On The Structural Strength And Crushing Behavior Of Cold-Formed Steel Stub Columns, Chi-Ling Pan, Wei-Wen Yu Jul 1993

Design Of Automotive Structural Components Using High Strength Sheet Steels Effect Of Strain Rate On The Structural Strength And Crushing Behavior Of Cold-Formed Steel Stub Columns, Chi-Ling Pan, Wei-Wen Yu

CCFSS Library (1939 - present)

INTRODUCTION In the past, a considerable amount of theoretical and experimental research has been undertaken to study material properties and the behavior of structures under dynamic loads and impact loads. For the purpose of investigating the structural behavior and strength of cold-formed steel members under dynamic loads, a research project was conducted at the University of Missouri-Rolla from January 1988 through December 1991 to study the effect of strain rate on mechanical properties of sheet steels and the structural behavior and strength of cold-formed steel members. The test results of material properties, stub columns, and beams with evaluations were summarized …


Eureka General Plan Update, Susie Van Kirk Jul 1993

Eureka General Plan Update, Susie Van Kirk

Susie Van Kirk Papers

Historic resources within the City of Eureka's planning area, which extends from College of the Redwoods to Indianola, reflect the region's development since its settlement in 1850. Significant in the area's social, economic, and architectural history, these resources include a diversity of structures, sites, groups, neighborhoods, and communities, each of which contributes to the planning area's aesthetic qualities and historic context. They are the tangible evidence of the regions past and a heritage to be valued by this and future generations.


Construction Report Fhwa Special Project 202, Break And Seat Of Jointed Reinforced Concrete Pavement, R. Clark Graves, David L. Allen Jul 1993

Construction Report Fhwa Special Project 202, Break And Seat Of Jointed Reinforced Concrete Pavement, R. Clark Graves, David L. Allen

Kentucky Transportation Center Research Report

This study is part of the FHWA sponsored Special Project 202, "Break and Seat of Jointed Reinforced Concrete Pavement" (SP-202). In addition to Kentucky, West Virginia, Ohio, and Louisiana are also participating in the project. The projects were constructed under the experimental design defined in the FHWA Document "Special Project 202 Technical Resource Forum", June 6 and 7, 1989. Breaking patterns of 6, 18, and 30 inches, along with a control section which was not broken were used in each of the participating states.

The only major problem which occurred during construction occurred in the inside lane of the 6-inch …


Bs News Jul 1993

Bs News

Building Services Engineering

No abstract provided.


Optimizing Irrigation Management For Pollution Control And Sustainable Crop Yield, G. R. Musharrafieh, Richard C. Peralta Jul 1993

Optimizing Irrigation Management For Pollution Control And Sustainable Crop Yield, G. R. Musharrafieh, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

We developed a simulation-optimization model which maximizes crop yield while maintaining target salt concentration in the root zone, and/ or preventing salt from leaching to the groundwater. The model performs nonlinear optimization and simulation. Implicit finite difference forms of the nonlinear, transient, unsaturated water flow equation, and the convection-diffusion equation are embedded as constraints. Other constraints include nonlinear functions describing the hydraulic properties of the medium. The objectives of the management model is to develop irrigation strategies which prevent salt leaching to the groundwater when salty irrigation water is used. Five different irrigation strategies are developed for Huntington Research Farm, …


Breaking Wave Spectrum And Set-Down Set-Up In Shallow Water, W.H. Yang Jun 1993

Breaking Wave Spectrum And Set-Down Set-Up In Shallow Water, W.H. Yang

Journal of Marine Science and Technology–Taiwan

To study the mean water surface in the shallow water, it is necessary to compute the wave set-up and set-down of random waves on the surf zone. Therefore, the breaking wave spectra and radiation stress must be calculated from a wide-band breaking wave model. In this study, we extend the breaking wave spectrum model (Yang, 1991) by using the Wallops spectrum in the deep water. The Wallops spectrum is based on wave dynamics theoretical analysis and no empirical coefficients to be determined by the users. It also contents correct energy (Huang et al., 1981). The breaking wave spectra, radiation stress, …


The Naval Reserve Civil Engineer Corps Environmental Engineering Program, William A. Heine, Samuel A. Vigil Jun 1993

The Naval Reserve Civil Engineer Corps Environmental Engineering Program, William A. Heine, Samuel A. Vigil

Civil and Environmental Engineering

The Navy is engaged in a national effort to bring its shore facilities into compliance with all applicable local, state, and federal environmental regulations. This work is being completed by civil service employees, consultants, and contractors under the supervision of Navy Civil Engineer Corps officers. To supplement these active duty and civilian resources, the Reserve Division of the Naval Facilities Engineering Command (RDNAVFAC) has identified Reserve officers with substantial environmental engineering skills who are being assigned to assist Navy shore activities all over the world in this essential task. The Naval Reserve Civil Engineer Corps (CEC) is composed of over …


Predicting Seepage Of Leachate From The St. Johns Landfill To Ground And Surface Water Systems, Kevin A. Schock Jun 1993

Predicting Seepage Of Leachate From The St. Johns Landfill To Ground And Surface Water Systems, Kevin A. Schock

Dissertations and Theses

Determination of the vertical and horizontal groundwater hydraulic gradient within a landfill is the first step in determining the potential of groundwater contamination from the landfill leachate. The length of a study and the frequency at which measurements are recorded can greatly affect the description of the local groundwater environment. A more comprehensive analysis can be preformed for longer periods of study and greater measurement frequency. The intent of this study was to install a continuous groundwater level monitoring system around the st. Johns Landfill for a minimum study length of one year. This would allow a more thorough study …


Conference Speakers, Multiple People Jun 1993

Conference Speakers, Multiple People

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Meeting Minutes Of The Organizing And Steering Committees, Multiple Members Jun 1993

Meeting Minutes Of The Organizing And Steering Committees, Multiple Members

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.