Engineering Commons^™

Fast Track Concrete Paving, John Mcchord

Kentucky's Annual Forum on Transportation

No abstract provided.

Advantage I-75 Project, Jerry Lentz

Kentucky's Annual Forum on Transportation

No abstract provided.

Asphalt Materials, T. Scott Shuler

Kentucky's Annual Forum on Transportation

No abstract provided.

Kentucky's Future Economic Growth Policy: A Legislative Perspective, John A. "Eck" Rose

Kentucky's Annual Forum on Transportation

No abstract provided.

Spurring Economic Development In Kentucky's Communities, Robert N. Elliston

Kentucky's Annual Forum on Transportation

No abstract provided.

Kentucky's Investment In Economic Growth, D. Jeffrey Noel

Kentucky's Annual Forum on Transportation

No abstract provided.

Investments In Economic Growth: A National Perspective, Merl M. Hackbart

Kentucky's Annual Forum on Transportation

No abstract provided.

Does Transportation Lead Economic Growth?, James M. Wiseman

Kentucky's Annual Forum on Transportation

No abstract provided.

Economic Development Through Advancing Transportation Technology, Charles L. Miller

Kentucky's Annual Forum on Transportation

No abstract provided.

Welcome And Remarks [1990], Robert E. Hemenway

Kentucky's Annual Forum on Transportation

No abstract provided.

Kentucky Transportation Hall Of Fame [1990], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.

Elliptical Combing Motion For Harvesting Bell Peppers, J. H. Wilhoit, George A. Duncan, Larry G. Wells

Biosystems and Agricultural Engineering Faculty Publications

A new concept for mechanically harvesting bell peppers, intended specifically for multiple-pass harvesting, utilized spaced horizontal fingers combing vertically upward through plant foliage in an elliptical path alternating from both sides of the row. An apparatus based on this concept was designed and built, and harvest tests were conducted to determine the effect of two main machine operating parameters, vertical picking speed and disk angle. Harvesting performance was evaluated in terms of harvest efficiency, fruit damage, and plant damage as it related to multiple-pass harvesting. Fruit removal, both harvestable size and immature, increased significantly as vertical picking speed increased. Branch …

Ground Modification Systems (Stone Columns And Wick Drains In Jefferson County), Bobby W. Meade, David L. Allen

Kentucky Transportation Center Research Report

The purpose of this study was to document construction procedures, monitor field performance, and make recommendations as to the effectiveness and future use of stone column and wick drains for ground modification purposes. This project involved the use of wick drains to accelerate consolidation in bridge approach foundations and stone columns to improve foundation support for reinforced soil walls supporting bridge abutments.

This effort was executed by use of field inspections, photologs, and instrumentation to monitor field response. Instrumentation included earth pressure meters, multipoint settlement gages, slope inclinometers, settlement platforms, and piezometers. Wick drain performance was satisfactory. One reinforced soil …

Safety Belt Usage Before And After Enactment Of A Mandatory Usage Ordinance (Lexington-Fayette County, Kentucky), Kenneth R. Agent

Kentucky Transportation Center Research Report

No abstract provided.

Analysis Of Traffic Accident Data In Kentucky (1985-1989), 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 1985 through 1989. A primary objective of this study was to determine average accident statistics for Kentucky highways. Average and critical number 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 …

Road Rater Correlation, R. Clark Graves, David L. Allen

Kentucky Transportation Center Research Report

In this study, a correlation has been conducted between the Model 400B and the Model 2000 Road Rater. Also contained in this study, is a study of the linearity of the Road Rater measurements. Information gained from this study will provide better understanding of Road Rater measurements.

1990 Safety Belt Usage Survey And Evaluation Of Effectiveness In Kentucky, Kenneth R. Agent

Kentucky Transportation Center Research Report

The objective of the survey was to establish 1990 safety belt and child safety seat usage rates in Kentucky. 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.

Statewide usage rates were 32 percent for drivers and front-seat passengers (over 19 years of age) and 57 percent for children under four years of age (front and rear seats). Usage rates had increased significantly in 1990 …

Puffing Biological Material, Frederick A. Payne

Biosystems and Agricultural Engineering Faculty Patents

A method and apparatus for puffing biological material such as fruits and vegetables are provided. The method includes the steps of: (a) placing the material in a pressure chamber; (b) subjecting the material to a puffing gas such as carbon dioxide at an increased pressure between substantially 400 and 1200 psi; (c) quickly releasing the puffing gas pressure in less than 1 second to puff the material; and (d) drying the material after puffing to set it in the puffed state. The material is prepared for puffing by sizing so as to include at least one dimension of between substantially …

Correlation Of Astm And Kentucky Cbr Methods For Fayette County, Tony L. Beckham, David L. Allen

Kentucky Transportation Center Research Report

No abstract provided.

Pavement Deflection Test Database, Bobby W. Meade, David L. Allen

Kentucky Transportation Center Research Report

Pavement deflection measurements have been collected on various pavement types by both research and the Pavement Management Branch of the Transportation Cabinet for several years. This report outlines the establishment of a data base of deflection measurements which have been collected. A index program has been developed to search the available data base for pavement sections which meet given criteria. This data base will provide up-to-date information which may be used for both research and pavement management activities. The presence of historical data will assist in evaluating the structural performance of various pavement types. It will also provide additional information …

Proposed Revisions To Kentucky Revised Statutes, Theodore Hopwood Ii, Donald G. Hartman

Kentucky Transportation Center Research Report

No abstract provided.

Automated Harvesting Of Burley Tobacco Ii. Evaluation Of System Performance, Larry G. Wells, George B. Day V, Timothy D. Smith

Biosystems and Agricultural Engineering Faculty Publications

A prototype system for fully automated harvesting of burley tobacco has been developed and tested. Three years of field testing has shown that mechanical losses associated with the system were only slightly higher than via conventional methods. The system performed reliably at a sustained harvesting rate of approximately 1.4 ha/day (3.4 acre/day), while indicating that a rate of 2 ha/day (5 acre/day) should be easily achievable. The system is operated by two workers and reduces conventional labor requirement by approximately 80-85%.

Automated Harvesting Of Burley Tobacco I. System Development, Larry G. Wells, George B. Day V, Timothy D. Smith

Biosystems and Agricultural Engineering Faculty Publications

A fully automated system for harvesting and handling mature buriey tobacco has been developed. This article identifies the operations essential to this harvesting concept and describes the development of the mechanisms by which they were accomplished. The system detaches, inverts and places mature plants into portable holders for air curing under waterproof covering without requiring any manual handling of the crop. Manual labor currently required to harvest buriey tobacco would be reduced by 80-85% and the system would eliminate the drudgery associated with manual handling. The harvesting system has an approximate capacity of 1.4 to 2.0 ha/day (3.5 to 5.0 …

Louisa Bypass Experimental Project, Kamyar C. Mahboub, L. John Fleckenstein

Kentucky Transportation Center Research Report

In an effort to reduce rutting in the new Louisa Bypass in Lawrence County, Kentucky, a large-stone asphaltic base mix (Class K) was used in the base layer. A one-inch surface wearing course was used in this project, a polymer-modified asphalt was used in the surface course on half of the project. In order to facilitate subsurface drainage, a free draining subbase (No. 57's) was placed between the large-stone base and a dense-graded aggregate (DGA) layer. The drainage design was further enhanced by edge and median drains. Construction processes were monitored and photographed. Laboratory and field studies were conducted to …

Estimation Of Equivalent Axleloads Using Data Collected By Automated Vehicle Classification And Weigh-In-Motion Equipment, Herbert F. Southgate

Kentucky Transportation Center Research Report

The primary objective of this research study was to modify the existing EAL estimation system to include data obtained using the Golden River Weigh-In-Motion system and automated vehicle classification equipment. Data are to be collected over a three-year cycle in accordance with the FHWA Traffic Monitoring Guide. Having the capability of moving the portable weigh-in-motion scales to locations other than interstate sites permits the collection and analyses of specific data at sites on other highway functional classifications. Such data permits estimating both accumulated and future EAL requirements for that site. Such data permits estimating EAL requirements for sites on the …

Large-Stone Mixes For Reducing Rutting, Kamyar C. Mahboub

Kentucky Transportation Center Research Report

Large-stone mixes are becoming a very popular means for reducing rutting in flexible pavements. Aggregate interlock in large-stone mixes provides for very efficient dissipation of compressive and shear stresses that are known to be responsible for rutting and shoving in flexible pavements. This report documents mix design procedures and laboratory testing for characterization of rutting potential of large-stone asphalt mixes (LSAM) in Kentucky and particularly the Louisa Bypass project.

A series of large-stone aggregate gradations were studied. A promising aggregate gradation was selected in cooperation with Kentucky Department of Highway officials and representatives of the asphalt industry. Based upon the …

Performance Report On Corrugated Polyethylene Pipe, N-12, L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

This paper documents the installation and performance ofN-12 pipe installed during construction of South Forbes Road in Fayette County, KY 54 in Daviess County, US 62 in McCracken County, Nicholasville Road in Fayette County, and US 68/KY 80 in Warren County. The pipe is manufactured by Advanced Drainage Systems, Inc., and is designated as ADS N-12. ADS N-12 is a corrugated high-density polyethylene (HDPE) pipe. The pipe has a corrugated exterior for increased strength and a smooth interior to provide maximum flow capacity.

The N-12 pipe requires less equipment and fewer personnel than steel or concrete pipe for installation. From …

Summary Of Results Of 1989 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 field and laboratory evaluations of pavement marking materials for the SASHTO Regional Test Facility. The purpose of the Regional Test Facility (RTF) is to minimize the amount of field and laboratory research testing of specific types of materials. This is accomplished by combining efforts in an organized manner to reduce the monetary and man-hour requirements of both the states and industry. A RTF for the twelve SASHTO states was approved at the 1988 SASHTO convention. The twelve SASHTO states are Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North …

Tort Liability Related To Highways In Kentucky, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

An objective of this study was to review and analyze claims made against the Kentucky Transportation Cabinet through the Board of Claims. Another objective was to review the current state-of-the-art related to tort liability and highway agencies. This was accomplished by reviewing the literature and contacting other state highway agencies. Using information obtained from these various sources, recommendations were made relating to the establishment of an effective risk management program.

Information from Board of Claims cases was obtained for the years 1981 through 1989 and then analyzed. This information included the date of the claim, the county where the action …

Instrumentation Of The Twelvemile Bridge, Theodore Hopwood Ii, David Q. Hunsucker, Edgar E. Courtney

Kentucky Transportation Center Research Report

An experimental precast, post-tensioned concrete segmental girder bridge over Twelvemile Creek in Campbell County was instrumented with stress and strain sensors. Those sensors were read during beam fabrication and the initial portion of construction. The work was performed to address Transportation Cabinet questions about structural performance and also to assess the effect of long-term creep. The study and bridge were not completed as originally designed due a beam failure during post-tensioning.

A variety of stress, strain, and deflection measuring techniques were to be employed during the study. Several of those including concrete stress and strain meters, and vibrating-wire strain gages …