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Articles 31 - 60 of 444
Full-Text Articles in Entire DC Network
Managing In Changing Times--Industry's Perspective, Dean Blake
Managing In Changing Times--Industry's Perspective, Dean Blake
Kentucky's Annual Forum on Transportation
No abstract provided.
Doing With Less, Paul E. Toussaint, Mike Hancock, Judith M. Mueller
Doing With Less, Paul E. Toussaint, Mike Hancock, Judith M. Mueller
Kentucky's Annual Forum on Transportation
No abstract provided.
Update From The Kentucky General Assembly, Hubert Collins
Update From The Kentucky General Assembly, Hubert Collins
Kentucky's Annual Forum on Transportation
No abstract provided.
Other Perspectives On Transportation Funding, John A. Deacon, Stephen D. Rowland
Other Perspectives On Transportation Funding, John A. Deacon, Stephen D. Rowland
Kentucky's Annual Forum on Transportation
No abstract provided.
Status Of Kentucky's Transportation Program, Don C. Kelly
Status Of Kentucky's Transportation Program, Don C. Kelly
Kentucky's Annual Forum on Transportation
No abstract provided.
The Future Of State Funding, Merl M. Hackbart, Glenn B. Mitchell, Sylvia L. Lovely
The Future Of State Funding, Merl M. Hackbart, Glenn B. Mitchell, Sylvia L. Lovely
Kentucky's Annual Forum on Transportation
No abstract provided.
The Future Of Federal Funding, Harold Rogers, Steven O. Palmer
The Future Of Federal Funding, Harold Rogers, Steven O. Palmer
Kentucky's Annual Forum on Transportation
No abstract provided.
Welcome And Remarks [1995], Thomas W. Lester
Welcome And Remarks [1995], Thomas W. Lester
Kentucky's Annual Forum on Transportation
No abstract provided.
Kentucky Transportation Hall Of Fame [1995], Kentucky Transportation Center
Kentucky Transportation Hall Of Fame [1995], Kentucky Transportation Center
Kentucky's Annual Forum on Transportation
No abstract provided.
Shear Strength And Fatigue Crack Propagation In Concrete By Energy Method, Wei Wang
Shear Strength And Fatigue Crack Propagation In Concrete By Energy Method, Wei Wang
Dissertations
The limit analysis methods have been commonly used to predict the ultimate flexure strength of reinforced concrete members over 50 years. However, current design formulas for shear in structural concrete are mostly empirical. In part one of this dissertation, attempts are made to apply the theory of plasticity to predict the shear strengths of reinforced concrete structures.
The modified Coulomb-Mohr failure criterion is used as the constitutive law of concrete, and the plastic flow is assumed to be associated with this failure criterion. A generalized formulation for energy dissipation in accordance with the failure criterion and associated flow rule is …
A Nondestructive Method For The Determination Of Fracture Energy In Concrete Structures, Been-Jyh Yu
A Nondestructive Method For The Determination Of Fracture Energy In Concrete Structures, Been-Jyh Yu
Dissertations
It is generally believed that linear elastic fracture mechanics concepts can not be employed in determining fracture parameters in concrete, and therefore most of the current research effort has focused on applying the principles in yielding fracture mechanics. Despite all these efforts, comparison of results reported by many investigators indicate wide variations in fracture toughness values even for essentially similar materials. The main source of discrepancy in the observed results is the existence of a large process zone at the crack tip. Hence, the amount of energy consumed in advancing the crack will depend on the size of the process …
Civilizing The Civil Engineer: How A History Course Can Serve As A Curriculum Capstone, John Alfred Heitmann
Civilizing The Civil Engineer: How A History Course Can Serve As A Curriculum Capstone, John Alfred Heitmann
History Faculty Publications
Beginning in 1989 and then every other year thereafter, a unique course dealing specifically with the history of civil engineering has been taught to all civil engineering majors at the University of Dayton. What has evolved over time -- in response to student feedback, ongoing reform in the curriculum, and a maturing of faculty expertise -- is a course in the history of civilization that has as its major focus the discipline of civil engineering.
In reality, what happens in the classroom is a far broader learning experience than either the disciplines of history or civil engineering could provide standing …
Strength Of Flexural Members Using Structural Grade 80 Of A653 And Grade E Of A611 Steels, Shaojie Wu, Wei-Wen Yu, Roger A. Laboube
Strength Of Flexural Members Using Structural Grade 80 Of A653 And Grade E Of A611 Steels, Shaojie Wu, Wei-Wen Yu, Roger A. Laboube
CCFSS Library (1939 - present)
This first progress report reviews earlier research on ASTM A653 Structural Grade 80 steel (formerly ASTM A446 Grade E) and similar steels used for cold-formed structural members, and summarizes the results of the tension coupon tests recently carried out at the University of Missouri-Rolla. The review focuses on experimental study and structural performance of members made of such steels, including ultimate strength of structural members as affected by the increases in yield strength of base metal, reduction in ductility of base metal, thickness of base metal, flat width-to-thickness ratio of elements, type of deck profile, and base metal rolling direction. …
Flexible Low-Cost Automated Scaled Highway (Flash) Laboratory For Studies On Automated Highway Systems, Pushkin Kachroo, Kaan Ozbay, Robert G. Leonard, Cem Unsal
Flexible Low-Cost Automated Scaled Highway (Flash) Laboratory For Studies On Automated Highway Systems, Pushkin Kachroo, Kaan Ozbay, Robert G. Leonard, Cem Unsal
Electrical & Computer Engineering Faculty Research
This paper addresses the development of a flexible low-cost automated scale highway (FLASH) laboratory which is intended to serve as a catalyst for accelerating the development of many intelligent vehicle highway system (IVHS) concepts. It also highlights the significance of the laboratory for the research, evaluation, and testing of automated highway system (AHS) configurations, architectures, designs and technologies. This laboratory, using small scale standardized vehicles will serve as a test bed for the economical development and evaluation of various hardware, software, and management systems before full scale testing and deployment. The laboratory will provide the capability to test day and …
Analysis Of Traffic Accident Data In Kentucky (1990- 1994), Kenneth R. Agent, Jerry G. Pigman
Analysis Of Traffic Accident Data In Kentucky (1990- 1994), Kenneth R. Agent, Jerry G. Pigman
Kentucky Transportation Center Research Report
This report includes an analysis of traffic accident data in Kentucky for the years of 1990-1994. A primary objective of this study was to determine average accident statistics for Kentucky highways. Average and critical numbers and rates of accidents were calculated for various types of highways in rural and urban areas. These data can be used in Kentucky's procedure to identify locations that have abnormal rates or numbers of accidents.
Another objective of this study was to provide data which can be used in the preparation of the problem identification portion of Kentucky's Annual Highway Safety Plan. County and city …
Best Practices For Commercial Vehicle Monitoring Facilities Design, Nikiforos Stamatiadis, R. Clark Graves, John E. Schmidt
Best Practices For Commercial Vehicle Monitoring Facilities Design, Nikiforos Stamatiadis, R. Clark Graves, John E. Schmidt
Kentucky Transportation Center Research Report
The great technological advances that were made over the last decade in monitoring traffic and the increased emphasis on highway safety for truck traffic have prompted a need to determine more effective ways to monitor and inspect truck traffic. Commercial Vehicle Monitoring (CVM) facilities provide the highway community with the means of supervising truck traffic. However, in an era with limited funds and space for roadway expansion. some consideration must be given to the types of facilities needed and the most efficient way to spend the available funds. Hence, a research study was initiated to determine the successful practices for …
Use Of Class Aa Concrete Modified With A High-Range Water Reducing Admixture In A Full-Depth Bridge Deck Slab Us 127, Lincoln County, David Q. Hunsucker, Michael D. Stone
Use Of Class Aa Concrete Modified With A High-Range Water Reducing Admixture In A Full-Depth Bridge Deck Slab Us 127, Lincoln County, David Q. Hunsucker, Michael D. Stone
Kentucky Transportation Center Research Report
Because it is desirable for bridge deck concrete to be strong and durable, the Kentucky Department of Highways chose to use a high-range water reducer to modify the properties of a conventional Class AA concrete mixture to be placed in a full-depth concrete bridge deck on US 127 in Lincoln County. A high-range water reducer is a chemical admixture that when added to low-to-normal slump concrete produces a high slump to flowing concrete. The higher slump enhances placement properties in areas of closely spaced and congested reinforcing steel such as that encountered in the corners of a skewed bridge structure. …
1995 Safety Belt Usage Survey And Evaluation Of Effectiveness In Kentucky, Kenneth R. Agent
1995 Safety Belt Usage Survey And Evaluation Of Effectiveness In Kentucky, Kenneth R. Agent
Kentucky Transportation Center Research Report
The objective of this study was to establish 1995 safety belt and child safety seat usage rates in Kentucky. The 1995 survey documents the continuing results from enacting a statewide mandatory safety belt law in 1994. Data were collected at 100 sites and combined based on vehicle miles travelled for a given type of highway, rural or urban location, and county population category. Also included in this report is an analysis of accident records evaluating the effectiveness of safety belts.
The data show that the dramatic increase in usage rates after enactment of the statewide law has decreased a small …
Ccfss Technical Bulletin August 1995, Wei-Wen Yu Center For Cold-Formed Steel Structures
Ccfss Technical Bulletin August 1995, Wei-Wen Yu Center For Cold-Formed Steel Structures
CCFSS Technical Bulletins (1993 - 2020)
No abstract provided.
Lead Distribution In A Simulated Aquatic Environment: Effects Of Bacterial Biofilms And Iron Oxide, Yarrow M. Nelson, Waihung Lo, Leonard W. Lion, Michael L. Shuler, William C. Ghiorse
Lead Distribution In A Simulated Aquatic Environment: Effects Of Bacterial Biofilms And Iron Oxide, Yarrow M. Nelson, Waihung Lo, Leonard W. Lion, Michael L. Shuler, William C. Ghiorse
Civil and Environmental Engineering
Biofilms influence the transport and fate of heavy metals in aquatic environments both directly by adsorption and complexation reactions and indirectly via interactions with oxides of iron and manganese. These reactions were investigated by introducing lead into a continuous-flow biofilm reactor that was designed to simulate conditions in a flowing freshwater aquatic environment. The reactor provided controlled conditions, and use of a chemically-defined growth medium allowed calculation of lead speciation with a chemical equilibrium program (MINEQL). Pseudomonas cepacia was employed as a test cell strain because of its ability to grow and form biofilms in the defined medium. This bacterium …
Ccfss News August 1995, Wei-Wen Yu Center For Cold-Formed Steel Structures
Ccfss News August 1995, Wei-Wen Yu Center For Cold-Formed Steel Structures
CCFSS Newsletters (1999 - 2008)
No abstract provided.
Summary Of Results Of 1994 Field And Laboratory Evaluations Of Pavement Marking Materials, Kentucky Transportation Center
Summary Of Results Of 1994 Field And Laboratory Evaluations Of Pavement Marking Materials, Kentucky Transportation Center
Kentucky Transportation Center Research Report
This report summarizes the results of data collected as part of the 1994 field and laboratory evaluations of pavement marking materials for the National Transportation Product Evaluation Program (NTPEP). The purpose of the NTPEP is to pool the professional and physical resources of the individual participating AASHTO member departments and to focus those resources to test materials of common interest in order to improve cost-effectiveness.
The type of testing performed under the NTPEP will provide information that will be used to evaluate the acceptability of materials and to compare the performance of similar materials. The NTPEP also provides industry with …
Pavement Distresses At Intersections, David Q. Hunsucker, Bobby W. Meade
Pavement Distresses At Intersections, David Q. Hunsucker, Bobby W. Meade
Kentucky Transportation Center Research Report
Asphaltic concrete pavements at intersections and their approaches, where traffic is required to stop and start, exhibit several types of distress. Among the more prominent forms of these distresses are deep rutting, pushing and shoving, and severe wash boarding. Prior research in this area has shown the leading causes of pavement failures at these locations are primarily materials related. Meaningful amounts of funds allocated for maintenance operations are exhausted each year to rehabilitate intersection pavements that have become safety hazards as a result of simple traffic action. Significant savings may be realized if intersections and their approaches are designed and …
Optimal Pumping Strategies To Maximize Dissolved Tce Extraction At Central Base Area, Norton Afb, California, Richard C. Peralta
Optimal Pumping Strategies To Maximize Dissolved Tce Extraction At Central Base Area, Norton Afb, California, Richard C. Peralta
Civil and Environmental Engineering Faculty Publications
Norton Air Force Base (NAFB) is located in the San Bernardino Valley, part of the California Peninsular Range geomorphic province (Figure 1). The elevation at NAFB is about 1,100 feet above mean sea level (msl). The ground slopes gradually to the southwest.
Stay-In-Place Deck Panels - Horizontal Shear Strength Of Bridge Deck Panels - Part 2, Phani Kumar Nukala, J. A. Ramirez, Robert H. Lee, Menashi D. Cohen
Stay-In-Place Deck Panels - Horizontal Shear Strength Of Bridge Deck Panels - Part 2, Phani Kumar Nukala, J. A. Ramirez, Robert H. Lee, Menashi D. Cohen
JTRP Technical Reports
One of the most economic methods of bridge deck construction consists of prestressed concrete deck panels used in stay-in-place forms in conjunction with the cast-in-place concrete topping instead of the traditional monolithic roadway deck slabs. The performance of this type of deck as a composite unit is only possible if the horizontal shear stress resulting from bending of the deck if effectively transferred across the interface of the two elements. It is assumed that horizontal shear stresses are transmitted across the interface due to bond between the precast panel and cast-in-place concrete acting in conjunction with the horizontal shear connectors …
Toward Determining Minimal/Optimal Transportation Department Resource Requirements: An Examination Of State Privatization Trends Among Selected States, Douglas J. Olberding
Toward Determining Minimal/Optimal Transportation Department Resource Requirements: An Examination Of State Privatization Trends Among Selected States, Douglas J. Olberding
Kentucky Transportation Center Research Report
The purpose of this project was to conduct a preliminary analysis of employment and privatization trends in state transportation departments. This project involved a review of recent literature on public sector privatization efforts, an analysis of all state transportation departments in order to locate a sample of states with transportation system characteristics similar to those of Kentucky, and a survey of the sample states· to determine privatization trends in the functional areas of administration, maintenance, design, engineering, enforcement and safety, and construction.
The study finds that among transportation departments in the 14 sample states, average annual increases in private sector …
Results Of A Delphi Study On Transport Research Needs, Marcus Ramsay Wigan
Results Of A Delphi Study On Transport Research Needs, Marcus Ramsay Wigan
Marcus R Wigan
A Delphi survey was undertaken with a selection of professionals in academic, government and consulting across the world. The objective was to identify the application areas where priorities should be placed, and the current status of the research and information tools needed to address them. For this reason both modelling and application experts were included. The shifts in priorities over the last five years, and the differences in view between the three sectors are presented. The attitudes towards a range of specific research and development directions were also assessed. Later republished in the Journal of Transport Statistics, but without this, …
Stormwater Drainage Manual 1995, Christopher B. Burke, Thomas T. Burke
Stormwater Drainage Manual 1995, Christopher B. Burke, Thomas T. Burke
Indiana Local Technical Assistance Program (LTAP) Publications
This manual is a comprehensive catalog of procedures, design methods and criteria, and general background information which will enable the designer to quickly learn or review the basic principles of storm drainage design. Subjects included are the precipitation and hydrological cycle, runoff and its estimation, open channels, flow in gutters and inlets, stormwater storage, storm sewer system design, and computer applications for computing watershed runoff. Included in the appendices are basics of statistical analysis, fundamentals of hydraulics, a list of regulatory agencies and governmental bodies which may have jurisdiction over drainage projects, and TR-20 and TR-55 blank forms.