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Articles 541 - 570 of 992
Full-Text Articles in Civil and Environmental Engineering
Laboratory Evaluation Of Edge Drains, L. John Fleckenstein, David L. Allen
Laboratory Evaluation Of Edge Drains, L. John Fleckenstein, David L. Allen
Kentucky Transportation Center Research Report
This report documents laboratory test results performed on four brands of highway edge drains. The four brands included in this study are Hydraway (by Monsanto), Akwadrain (by International Construction Equipment, Inc.), Advantage (by Advanced Drainage Systems), and PDS 40 (by Pro Drain Systems).
Evaluation Of Lime Stabilized Road Bed, Bobby W. Meade, David L. Allen
Evaluation Of Lime Stabilized Road Bed, Bobby W. Meade, David L. Allen
Kentucky Transportation Center Research Report
In October 1986, the Transportation Research Program of the University of Kentucky published a report evaluating the addition of hydrated lime to the subgrade soils of Section 19 of the Ashland-Alexandria (AA.) highway (1). That study involved laboratory testing only and concluded that the engineering properties of these subgrade soils were significantly improved with the addition of 6 percent (by weight) hydrated lime. It was decided to add hydrated lime to the subgrade soils on Section 19.
Because that procedure had not previously been used in Kentucky, a study was approved to monitor construction procedures and the performance of an …
Allocation Of Highway Costs And Revenues, Jerry G. Pigman, John A. Deacon
Allocation Of Highway Costs And Revenues, Jerry G. Pigman, John A. Deacon
Kentucky Transportation Center Research Report
A continuing task related to highway financing is determination of the appropriate level of taxation for each class of highway user. Cost allocation in various forms has traditionally been the tool used to achieve an equitable assignment of user responsibility. Following is a summary of results from such a cost-allocation study undertaken by the University of Kentucky's Transportation Research Program. The objective of this study is to determine highway cost responsibility of various user classes and to assess revenues relative to costs under existing levels of taxation and under various alternatives considered in the 1988 legislative session.
Investigation Of Collapse Of Long-Span Structure Under Ky 80 In Floyd County, Ronald D. Hughes, David L. Allen, Robert C. Deen
Investigation Of Collapse Of Long-Span Structure Under Ky 80 In Floyd County, Ronald D. Hughes, David L. Allen, Robert C. Deen
Kentucky Transportation Center Research Report
The Kentucky Transportation Research Program (KTRP) was requested to obtain and review design, construction, and post construction documents relative to the long-span structure under KY 80 in Floyd County. Telephone and in-person contacts were made with various agency officials involved with the structure in an endeavor to collect pertinent data. Documents that were initially presented to KTRP staff were thoroughly reviewed and a draft report based upon information submitted was prepared. The draft report included a scenario relating to a probable sequence of events that could have been significant in the ultimate collapse of the structure.
Soon after distribution of …
Lime Stabilization Of Pavement Subgrade Soils Of Section Aa-19 Of The Alexandria-Ashland Highway, Tommy C. Hopkins, David L. Allen
Lime Stabilization Of Pavement Subgrade Soils Of Section Aa-19 Of The Alexandria-Ashland Highway, Tommy C. Hopkins, David L. Allen
Kentucky Transportation Center Research Report
The purposes of this study were to evaluate the effects of hydrated lime on the soils from Section AA-19 of the Alexandria-Ashland Highway and determine if the engineering properties of the soils from Section AA-19 could be improved by lime stabilization. Soil samples used in the study were obtained by· the Kentucky Transportation Research Program on March 25, 1986. Three bag samples were collected from Section AA-19 (Lewis County, Kentucky) of the Alexandria-Ashland Highway, Stations 1630 (Sample A), 1495 (Sample B), and 1675+50 (Sample C), respectively. Based on a review of the geology of Section AA-19, the three sampling sites …
Manual On Bridge/Culvert Maintenance, Gary W. Sharpe, Theodore Hopwood Ii
Manual On Bridge/Culvert Maintenance, Gary W. Sharpe, Theodore Hopwood Ii
Kentucky Transportation Center Research Report
The basic objective of this course is to provide background (introductory) technical information that will aid the manager of bridge/culvert installations. In most instances, information presented may not be sufficiently complete for the student to perform the required work. However, the intent is more to familiarize than to instruct In many instances, professional engineering and experienced labor are necessary to ensure successful completion of tasks. Once the local official responsible for bridges and culverts has completed this workshop, he should have a basic understanding of
- the most common bridges/culverts encountered in counties and municipalities,
- the major components of common bridge/culvert …
Agenda: Getting A Handle On Hazardous Waste Control, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Getting A Handle On Hazardous Waste Control, University Of Colorado Boulder. Natural Resources Law Center
Getting a Handle on Hazardous Waste Control (Summer Conference, June 9-10)
The conference chairman was University of Colorado School of Law professor Lawrence J. MacDonnell.
During the past ten years Congress has made the regulation of hazardous waste a priority. This conference focuses on the Resource Conservation and Recovery Act, as amended in 1984, and the Comprehensive Environmental Response, Compensation and Liability Act.
This conference attracted about 100 registrants from 16 states plus the District of Columbia. John G. Welles, Regional Director for EPA Region 8, presented a luncheon address.
Thickness Design Curves For Asphaltic Concrete On A 4-Inch Layer Of Dense-Graded Aggregate, Or On 6, 9, Or 12 Inches Of Stabilized Soil, Or For Maximum Utilization Of Dense-Graded Aggregate, Herbert F. Southgate
Thickness Design Curves For Asphaltic Concrete On A 4-Inch Layer Of Dense-Graded Aggregate, Or On 6, 9, Or 12 Inches Of Stabilized Soil, Or For Maximum Utilization Of Dense-Graded Aggregate, Herbert F. Southgate
Kentucky Transportation Center Research Report
No abstract provided.
Effects Of Load Distributions And Axle And Tire Configurations On Pavement Fatigue, Herbert F. Southgate, Robert C. Deen
Effects Of Load Distributions And Axle And Tire Configurations On Pavement Fatigue, Herbert F. Southgate, Robert C. Deen
Kentucky Transportation Center Research Report
Damage factor relationships for axle and tire configurations are presented. Adjustment factors are provided to account for variations in load distributions within axle groups, distances between axles of a tandem, and variations in tire pressure for both dual and flotation tires.
Properly accounting for accumulated fatigue of a pavement requires a traffic volume, proportions of vehicle styles (classifications) within the of service, estimate of the average damage factor for each classification, reasonable measure of traffic stream, dates and estimates of tire contact pressures.
All adjustment factors presented are based on analyses of a limited number of structures and should be …
Use Of Nondestructive Testing To Prevent Failures Of In-Service Metal Bridges, Theodore Hopwood Ii, Robert C. Deen
Use Of Nondestructive Testing To Prevent Failures Of In-Service Metal Bridges, Theodore Hopwood Ii, Robert C. Deen
Kentucky Transportation Center Research Report
The failure of metal bridges, subject to in-service fracture problems mainly caused by fatigue, may be prevented or minimized by performance of periodic nondestructive testing. Attendant factors that justify funding for such inspections include the potential for bridge failure, the consequences of bridge collapse, risk analyses, and inspection strategies. Factors that affect structural integrity include structural design, construction quality, and service loadings.
Details of a computer/strain-gage system capable of obtaining strain-gage data from critical structural elements are described. Data are processed to determine the stress-range distribution, number of stress cycles, resolved mean stress range, need for structural inspection, critical crack …
Documentation For 1986 Weight-Distance Tax Analyses Using Lotus 1-2-3, Herbert F. Southgate
Documentation For 1986 Weight-Distance Tax Analyses Using Lotus 1-2-3, Herbert F. Southgate
Kentucky Transportation Center Research Report
No abstract provided.
Evaluation Of A Full-Depth Asphaltic Concrete Pavement, Herbert F. Southgate, Gary W. Sharpe, Mark Anderson
Evaluation Of A Full-Depth Asphaltic Concrete Pavement, Herbert F. Southgate, Gary W. Sharpe, Mark Anderson
Kentucky Transportation Center Research Report
This study was initiated to verify a newly-developed set of design curves for full-depth asphaltic concrete pavements. Quality control during construction was checked using nuclear density testers, Benkelman beams, and a Road Rater. During the course of this study, an analysis system (predicated upon the elastic theory model) was developed to interpret the dynamic deflections as measured by the Road Rater. The thickness design curves were verified by elastic theory and deflection testing within the accuracy of construction variations.
Measured rut depths were analyzed in terms of potential rut depth resulting from consolidation under traffic due to lack of obtaining …
Workshop On Roadway And Street Drainage, Ronald D. Hughes, David L. Allen
Workshop On Roadway And Street Drainage, Ronald D. Hughes, David L. Allen
Kentucky Transportation Center Research Report
No abstract provided.