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Articles 1261 - 1290 of 2796

Full-Text Articles in Civil and Environmental Engineering

Evaluation Of Edge Drains On Interstate 64 Fayette, Scott, And Woodford Counties, L. John Fleckenstein, David L. Allen, Brad W. Rister Jul 1996

Evaluation Of Edge Drains On Interstate 64 Fayette, Scott, And Woodford Counties, L. John Fleckenstein, David L. Allen, Brad W. Rister

Kentucky Transportation Center Research Report

This report documents findings of the investigation of edge drains and their associated outlets on Interstate 64 from Milepost 65 to Milepost 75.6 in Fayette, Scott, and Woodford Counties. The study was initiated due to significant amounts of water and fines coming up through the AC surface. State and Federal Officials were concerned that possible failures in the edge drains were causing pumping and staining which will ultimately lead to premature pavement failure. Several factors appear to be contributing to the staining and pumping at the surface. These factors are discussed in the report.


Cost Estimating And Forecasting For Highway Work In Kentucky [1996], James D. Stevens, Jennifer R. Walton Jun 1996

Cost Estimating And Forecasting For Highway Work In Kentucky [1996], James D. Stevens, Jennifer R. Walton

Kentucky Transportation Center Research Report

There is a need for better cost estimating and forecasting for highway work in the Commonwealth of Kentucky. KRS45.245 grants the Interim Joint Committee on Transportation oversight of the biennial highway plan, including a review of all authorized highway project phases that exceed their estimates by 15%. In recent years, the Kentucky Transportation Cabinet has suffered the loss of many resources necessary to produce good cost estimates.

Estimates developed using current methods are not sufficiently accurate to preclude cost overruns in excess of 15%. Over the 1992 and 1994 bienniums, 362 overruns totaling $162,487,511 have been submitted to the Committee. …


Development Of A Critical Path Method Specification And A Training Program For Use Of Cpm And Ktc, James D. Stevens, Donn E. Hancher, Ihab M. Hamdi Jun 1996

Development Of A Critical Path Method Specification And A Training Program For Use Of Cpm And Ktc, James D. Stevens, Donn E. Hancher, Ihab M. Hamdi

Kentucky Transportation Center Research Report

The Critical Path Method is a proven management technique used for determining the critical activities that would need additional care in any type of construction projects. The KTC requires that CPM schedules be used on selected highway projects. This research project offers a detailed idea on CPM scheduling application in highway construction projects, as well as current practices in other departments of transportation nationwide, together with specifications for proper application of CPM scheduling.


Development Of Accident Reduction Factors, Kenneth R. Agent, Nikiforos Stamatiadis, Samantha S. Jones Jun 1996

Development Of Accident Reduction Factors, Kenneth R. Agent, Nikiforos Stamatiadis, Samantha S. Jones

Kentucky Transportation Center Research Report

The objective of this project is to develop accident reduction factors associated with various types of highway safety improvements. These factors will be used in the cost-optimization procedure to rank safety improvements.

The basis of the accident reduction factors developed in this study is a survey of states and a review of literature. The recommended reduction factors are presented in a table which lists the percent reduction in all accidents or specific types of accidents for given types of improvements.


Evaluation Of Edge Drains On I-81, In Roanoke, Virginia, L. John Fleckenstein, David L. Allen Jun 1996

Evaluation Of Edge Drains On I-81, In Roanoke, Virginia, L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

This report documents findings of the investigation of five different brands of panel edge drains installed in a test section along Interstate 81 in Roanoke, Virginia, from Milepost 154.148 to Milepost 156.11. Findings from this study indicated that closed core edge drains (Multi-Flow, Advanedge) are less likely to become damaged or distressed than the more open core drains (Contech, Akwadrain, Hydraway). Typical distress found in the more open cores was rolling over of the top row of support columns, fabric intrusion between support columns, and rolling up of the bottom row of support columns.


Evaluation Of Edge Drains On Pennyrile Parkway Webster County, L. John Fleckenstein, David L. Allen May 1996

Evaluation Of Edge Drains On Pennyrile Parkway Webster County, L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

This report documents findings of the investigation of pipe edge drains and outlets on the Pennyrile Parkway from Milepost 60.476 to Milepost 65.305 in Webster County. The study was initiated due to concerns from District 2 personnel that possible failures in the edge drains were causing pavement distress along the right wheel path. Findings from this study indicated that approximately 40 percent of the 123 edge drain outlets were less than 50 to 60 percent open. The round perforated pipe edge drain appeared to be in excellent condition, including the integrity of the pipe and the filter material. The sand …


Evaluation Of Superior Performing Portland Cement Concrete Pavements In Kentucky, Jerry G. Rose, Bobby W. Meade, David Q. Hunsucker May 1996

Evaluation Of Superior Performing Portland Cement Concrete Pavements In Kentucky, Jerry G. Rose, Bobby W. Meade, David Q. Hunsucker

Kentucky Transportation Center Research Report

This research report describes a program of study directed at determining common factors which have contributed to the superior performances of selected sections of Portland cement concrete (PCC) pavements in Kentucky. The program involved an extensive survey of Kentucky's interstate, partway and other primary routes to determine locations of PCC pavement sections greater than 15 years old that had performed satisfactorily with minimal maintenance. Twelve of the best performing PCC pavements with long service life and heavy traffic were selected for detailed evaluations. Initial designs were documented and a series of in-situ pavement tests were conducted including core dnlling and …


A Proposed Method Of Calibration And Correlation Of Weigh-In-Motion Systems, David L. Allen, Jerry G. Pigman Apr 1996

A Proposed Method Of Calibration And Correlation Of Weigh-In-Motion Systems, David L. Allen, Jerry G. Pigman

Kentucky Transportation Center Research Report

There are various types of weigh-in-motion systems currently in use by agencies that collect weight data. These include load cells, bending plate, capacitance pads, piezoelectric cables, and bridge WIM's. The response and behavior of these systems differs from one type to another. Most states calibrate these systems by one of two methods. The first is to calibrate by running a truck or trucks of known weights across the scales a number of times. The second is to use a sample of trucks from the traffic stream.

This report details a field calibration and correlation test site between a slow-speed WIM …


Source Zones, Recurrence Rates, And Time Histories For Earthquakes Affecting Kentucky, Ron Street, Zhernning Wang, Issam E. Harik, David L. Allen, James J. Griffin Mar 1996

Source Zones, Recurrence Rates, And Time Histories For Earthquakes Affecting Kentucky, Ron Street, Zhernning Wang, Issam E. Harik, David L. Allen, James J. Griffin

Kentucky Transportation Center Research Report

Time histories of hypothetical earthquakes, along with their peak-particle accelerations, and 0 and 5 percent damped response spectra are developed as guidelines for the seismic design of highway structures and bridges within Kentucky. The time histories are derived through the use of random vibration analyses, and take into consideration the probability of earthquakes from nearby seismic zones, the attenuation of ground motions with distance in the Central United States, and the possibility of a random event occurring outside of the generally recognized zones of seismicity in the area. Suggested peak-particle accelerations, time histories, and response spectra are intended for use …


Environmentally Safe Protective Coatings For Steel Structures-New Construction And Maintenance Painting, Theodore Hopwood Ii, Christopher M. Oberst Mar 1996

Environmentally Safe Protective Coatings For Steel Structures-New Construction And Maintenance Painting, Theodore Hopwood Ii, Christopher M. Oberst

Kentucky Transportation Center Research Report

The purpose of this study was to: 1) assist KyTC in identifying protective coatings lor structural steel that would meet current and pending environmental regulations, I and 2) to evaluate overcoating procedures that would be cost-effective and provide regulatory (OSHA and EPA) compliance.

A coatings research program was conducted that included: 1) laboratory accelerated corrosion/weathering tests, 2) field exposure tests, and 3) experimental maintenance I painting of entire bridges by overcoating. Each of those tasks was intended to address different issues. Regulations concerning volatile organic compound limits lor coating systems used in new construction were studied and recommendations provided to …


Rockfall Mitigation Measures, Tommy C. Hopkins, Tony L. Beckham, William A. Puckett Mar 1996

Rockfall Mitigation Measures, Tommy C. Hopkins, Tony L. Beckham, William A. Puckett

Kentucky Transportation Center Research Report

Highways in Kentucky contain numerous rock slopes and rockfall from these slopes represent potential dangers to motorists. As these highway rock cut slopes age and deteriorate because of weathering, the potential for rockfall and rock slides increases. Some bodily injuries and traffic fatalities have been reported in past years. The general aims of this study were to establish a highway rock cut slope policy and devise a statewide system of dealing with this problem. This study represents the start of an effort by the Kentucky Transportation Cabinet to develop a proactive stance and policy toward preventing, minimizing, or mitigating the …


1996 Highway Cost Allocation Update: Overview And Summary, John A. Deacon, Jerry G. Pigman Jan 1996

1996 Highway Cost Allocation Update: Overview And Summary, John A. Deacon, Jerry G. Pigman

Kentucky Transportation Center Research Report

No abstract provided.


Kentucky Traffic Accident Facts 1996 Report, Kentucky Transportation Center, Kentucky State Police Jan 1996

Kentucky Traffic Accident Facts 1996 Report, Kentucky Transportation Center, Kentucky State Police

Kentucky Transportation Center Research Report

KENTUCKY’S TRAFFIC ACCIDENT FACTS report for 1996 is based on accident reports submitted to the Accident Unit housed in the Kentucky State Police Information Services Branch, Records Section. As required by Kentucky Revised statutes 189.635, “every law enforcement agency whose officers investigate a vehicle accident of which a report must be made...shall file a report of the accident...within ten days after investigation of the accident upon forms supplied by the bureau.” The stated purpose of this requirement is to utilize date on traffic accidents” for such purposes as will improve the traffic safety program in the Commonwealth.” Data contained in …


1996 Highway Cost Allocation Update: Technical Report, John A. Deacon, Jerry G. Pigman Jan 1996

1996 Highway Cost Allocation Update: Technical Report, John A. Deacon, Jerry G. Pigman

Kentucky Transportation Center Research Report

This update of the highway cost allocation study is the seventh in a recent series begun in the early 1980's by the Kentucky Transportation Cabinet and the Kentucky Transportation Center. The primary objectives were to determine the level of revenue contribution and cost responsibility for each class of highway user. The base year of the study is FY 1995; the most recent time period for which revenue and cost data were available. Highway use or travel activity data for calendar year 1994 was the most recent available. A basic premise of the study was that only state maintained highways were …


Guidelines For The Installation Of Left-Turn Phasing, Kenneth R. Agent, Nikiforos Stamatiadis, Bryan Dyer Dec 1995

Guidelines For The Installation Of Left-Turn Phasing, Kenneth R. Agent, Nikiforos Stamatiadis, Bryan Dyer

Kentucky Transportation Center Research Report

The objective of this study was to update the guidelines to be considered when determining whether left-turn phasing should be used and the appropriate type at phasing to use. Emphasis was placed on high speed areas.

There were 264 intersections included in the study with data obtained tor 518 approaches at these intersections. The data included accidents and characteristics at the intersection. Traffic conflict data were collected. Simulation models were used to estimate delays.

Recommendations were made concerning guidelines to consider when deciding whether to install left turn phasing and whether to use protected-only or protected/permitted phasing. Variables considered included …


Impacts Of The Extended-Weight Coal Haul Road System, Jerry G. Pigman, Joseph D. Crabtree, Kenneth R. Agent, R. Clark Graves, John A. Deacon Dec 1995

Impacts Of The Extended-Weight Coal Haul Road System, Jerry G. Pigman, Joseph D. Crabtree, Kenneth R. Agent, R. Clark Graves, John A. Deacon

Kentucky Transportation Center Research Report

The Extended-Weight Coal Haul Road System, created by the Kentucky Legislature in 1986, consists of all roads which carry over 50,000 tons of coal in a calendar year. Trucks hauling coal on this system are authorized to exceed normal weight limits through the payment of an annual decal fee. A research study was initiated in July of 1992 to analyze the impacts of the extended-weight system.

Analyses in this report are based on the following: historical data on coal production and transportation: data from coal decal applications; interviews of legislators. transportation officials. coal company representatives. and coal trucking representatives: newspaper …


Groundwater Study: Toyota Motor Manufacturing, Usa Georgetown, Kentucky, Gary Felton, Lyle V. A. Sendlein, Teri Dowdy, Daryl Hines Nov 1995

Groundwater Study: Toyota Motor Manufacturing, Usa Georgetown, Kentucky, Gary Felton, Lyle V. A. Sendlein, Teri Dowdy, Daryl Hines

KWRRI Research Reports

An eighteen month study of the Toyota Motor Manufacturing (TMM) plant site and the surrounding area was undertaken. The basic charge for this project was to characterize the groundwater that is potentially impacted by the TMM plant site. This included occurrence, flow direction, and, if possible, velocity. Because the area is karstified (has sinkholes, springs, caves, etc.) surface water and groundwater are intimately connected and, hence, surface water was frequently an important component of this work.

Data from TMM construction plans and monitoring work done subsequent to construction were elicited from the various repositories within the TMM infrastructure. Aerial color …


Appendix: List Of Participants [1995], Kentukcy Transportation Center Oct 1995

Appendix: List Of Participants [1995], Kentukcy Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Wrap-Up, Leon N. Larson Oct 1995

Wrap-Up, Leon N. Larson

Kentucky's Annual Forum on Transportation

No abstract provided.


On The Horizon, David R. Bryant, John Leonard Carr, Tom Layman Oct 1995

On The Horizon, David R. Bryant, John Leonard Carr, Tom Layman

Kentucky's Annual Forum on Transportation

No abstract provided.


Managing In Changing Times--Industry's Perspective, Dean Blake Oct 1995

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 Oct 1995

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 Oct 1995

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 Oct 1995

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 Oct 1995

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 Oct 1995

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 Oct 1995

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 Oct 1995

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 Oct 1995

Kentucky Transportation Hall Of Fame [1995], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Analysis Of Traffic Accident Data In Kentucky (1990- 1994), Kenneth R. Agent, Jerry G. Pigman Sep 1995

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 …