Engineering Commons^™

Economic Impact To Industry, Douglas R. Kuelpman

Kentucky's Annual Forum on Transportation

No abstract provided.

A Kentucky Perspective And Comparison With Milwaukee's Experience, Dale R. Hettinger

Kentucky's Annual Forum on Transportation

No abstract provided.

"The Big One"--A Report On The Cold War Of 1994, J. M. Yowell

Kentucky's Annual Forum on Transportation

No abstract provided.

Welcome And Remarks [1994], Thomas W. Lester

Kentucky's Annual Forum on Transportation

No abstract provided.

Kentucky Transportation Hall Of Fame [1994], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.

In Situ Bioremediation Of Contaminated Unsaturated Subsurface Soils, Joseph L. Sims, R. C. Sims, R. R. Dupont, J. E. Mathews, M. M. Russell

Reports

An emerging technology for the remediation of unsaturated subsurface soils involves the use of microorganisms to degrade contaminants which are present in such soils. Understanding the processes which drive in situ bioremediation, as well as the effectiveness and efficiency of the utilization of these systems, are issues which have been identified by the Regional Superfund Engineering Forum as concerns of Superfund decision makers.

Forecasting And Backcasting Equivalent Single Axleloads (Volume 2- Appendix C), Jack A. Harison, David L. Allen, Jerry G. Pigman

Kentucky Transportation Center Research Report

No abstract provided.

Barge Traffic On Kentucky Rivers, Michael W. Whitney, Issam E. Harik, James J. Griffin, David L. Allen

Kentucky Transportation Center Research Report

Kentucky currently has the second longest navigable inland waterway system in the United States. Prior to the design of a bridge at a specific location on a river, a thorough investigation of barge traffic at that location ust be conducted. This report investigates the barge traffic on all navigable waterways in Kentucky. This report provides the data necessary to develop the risk assessment procedures for Kentucky vessel impact design problems in accordance with the AASHTO Guide Specification and Commentary for Vessel Collision Design of Highway Bridges design Method II. Method II is more rigorous to apply than Method I, but …

Stress Measurements On The I 65 Bridge Over The Ohio River At Louisville, Theodore Hopwood Ii, Christopher M. Oberst

Kentucky Transportation Center Research Report

Kentucky Transportation Center personnel conducted measurements of live stresses on structural members of the I 65 (John F. Kennedy Memorial) Bridge over the Ohio River. That work was performed in conjunction with an extensive flaw evaluation of the bridge by Hazelet & Erdal Consulting Engineers.

The measurements were performed by placing strain gages on the upper chord (an H-beam) and a vertical post and transverse strut that were framed into the upper chord at PP63 on the West truss. Measurements were performed using battery-powered data logging instruments that were capable of unattended strain measurement. The units were used to monitor …

Bs News

Building Services Engineering

No abstract provided.

Regionalization Of Hydrologic Information In Tanzania (Low Flows), Onyekwuluje C

Tanzania Journal of Engineering and Technology (TJET)

Hydrologic infornjation is required for the planning and design Ofwater resource projects. However, Hydrologic infonnation is always lacking at points of interest. Regionalization is ained at estimating hydrologic infor- mation such as low flow statistics at ungauged sites. Hydrologic informa- tion from 63 catchments in Tanzania has been analysed. In this paper, pooled flow duration curves for 1, IO, 30, 60, and 90 days duration have been established. Regression equations between the low flow indices (i.e. 95 percentile and for a IO day duration, average annual yield (AAY), av- erage daily flow (ADE)) and catchment characteristics were developed. The pooled …

Optimal Capacity Allocation Truck Industry In Tanzania:A Case Of National Transport Corporations(Ntc), R Mgaya

Tanzania Journal of Engineering and Technology (TJET)

This paper tries to examine truck transportation service in Tanzania, particularly, in National Transport Corporation’s subsidiary companies - Regional Transport Companies. It provides an analysis based on operations research approach on resource allocation, specifically, truck allocation, with an aim of trying to minimize running costs and hence improve profits. It is established that there had been higher running costs and hence decline of profits in some Regional Transport Companies due to misallocation of capacity. However, this problem had been compounded by some other factors as discussed in the paper. It is recommended that these Regional Transport Companies and other transport …

Comparison Of The Environmental Effects Of Aerobic And Anaerobic Composting Technologies, Samuel A. Vigil, George Tchobanoglous

Civil and Environmental Engineering

The biological conversion of yard wastes and municipal solid waste by aerobic composting is an established technology. Anaerobic conversion of these wastes is less practiced but is being widely advocated for the next generation of bioconversion systems. Although the operational characteristics of both types of systems is well known, there is a lack of quantifiable data in the literature on the environmental effects of these technologies. It is widely assumed that they are environmentally benign, especially as compared to other processing and conversion technologies such as incineration or mechanical processing. The process microbiology, design, and operational characteristics of aerobic and …

A Study Of Chloride Diffusion Properties Of Concrete At Early Age, W.D. Yeih, R. Huang, J.J. Chang

Journal of Marine Science and Technology–Taiwan

Existence of chloride ions in concrete may accelerate reinforcement corrosion. Chloride ions can penetrate into the concrete by the diffusion process even if no major cracks exist. It is well known that properties of concrete will change with time since the hydration reaction continues for a long time, which implies that the diffusion coefficient of concrete is a time-dependent function. In this research, the diffusion behavior is focused on early-age mortar and concrete. It is shown that the diffusion coefficient changes dramatically at early age; and the control of interface property is significantly important to chloride diffusion. The effect by …

The Use Of Ac And Dc Methods For Corrosion Monitoring Of Reinforced Concrete Members In Marine Environment, R. Huang, W.D. Yeih, J.J. Chang, C.C. Yang

Journal of Marine Science and Technology–Taiwan

Reinforced concrete is the most common engineering material for civil structures. The durability of the concrete structures depends mainly on the corrosion of steel reinforcement. In general, concrete produces an alkaline environment for steel which passivates it, so preventing corrosion. Provided this passivity is maintained, no problem should arise with steel reinforcement. However, in certain environment, chloride ions can locally destroy very protective passive film of reinforcement even though concrete is still alkaline. This paper presents the corrosion results of reinforcing steel in concrete members in marine environment using the AC impedance technique and DC method.

Analysis Of Three-Dimensional Pile Groups, M.T. Liang, Y. Liu

Journal of Marine Science and Technology–Taiwan

A numerical technique is presented in the analysis for loading behavior of general three-dimensional pile groups. The striking characteristics of the pile-group model may include raked pile, different pile sizes, non-uniform pile sections, soil inhomogeneit y, soil nonlinearity, and pile-soil-pile interaction. A typical six-pile group is analyzed and the results are compared with that obtained by four other computer programs that are based on different approaches. The computed solutions are shown to have reasonally good agreement with the measured values.

Evaluating The Design And Effectiveness Of Subsurface Drainage Layers, Bobby W. Meade, David Q. Hunsucker

Kentucky Transportation Center Research Report

In recent years, the subject of open-graded drainage layers, often referred to as "drainage blankets", has been utilized increasingly for pavement drainage. This study addresses the use of drainage blankets in Kentucky. Study efforts have focused on construction, performance, materials, and design considerations of drainage blankets.

Study findings are that the Number 57 gradation provides the optimum drainage and structural stability of the standard gradations evaluated. Asphalt treated aggregate provides greater stability and a better working platform than untreated aggregate. Maintenance of collector system outlets is very poor. Daylighting of drainage blankets appears to be feasible. Drainage blankets can be …

Effects Of Thickness And Curvature On The Natural Frequencies Of Cylindrical Composite Shells, Jose L. Monteverde E.

Theses and Dissertations

An analytical study is performed to determine the dynamic response, natural frequencies and mode shapes, of deep composite cylindrical shells, including the effect of through the thickness shear strain. The DSHELL finite element program is used to predict the first four natural frequencies and the results are compared to a reference using the Galerkin technique. The program was extended to problems considering simply supported-free boundary conditions. As is well know, the free boundary is rather difficult to represent using the Galerkin technique approach. The mode shapes are created by plotting a surface-contour plot of the eigenvector output from DSHELL.

A …

The Application Of Nepa Requirements To Cercla Remedial Actions, Connie L. Strobbe

Theses and Dissertations

This study investigated the application of National Environmental Policy Act NEPA requirements to Comprehensive Environmental Response, Compensation, and Liability Act CERCLA actions. Similarities in the documentation and public participation requirements of NEPA and CERCLA include identification and evaluation of alternatives and public participation. Differences include document contents and timing of public participation. This study presented four options for ensuring NEPA compliance at CERCLA sites. Option one included a Programmatic Environmental Impact Statement PEIS with subsequent combined FSEIS report for each subunit. Option two eliminated the PEIS, but retained a stand-alone NEPA document for each CERCLA subunit. Option three included a …

Knowledge‐Based Expert System For Concrete Mix Design, Yong Bai, Serji N. Amirkhanian

Civil and Environmental Engineering Faculty Research and Publications

In the United States, the American Concrete Institute method (ACI 211) is the most widely used concrete mix design. However, ACI 211 does not consider all factors regarding concrete mix design. The acceptance of a freshly mixed concrete depends on concrete quality control test results. If the results indicate that the concrete does not meet the specification, mix design adjustment must be made. Concrete mix design and adjustment are somewhat complicated and time‐consuming tasks that are performed best by experienced persons. In this project, a rule‐based expert system was developed to assist the user in concrete mix design, including the …

Bs News

Building Services Engineering

No abstract provided.

Seismic Response Study Of The Us 101/Painter Street Overpass Using Strong Motion Records, Rakesh K. Goel, Anil K. Chopra

Civil and Environmental Engineering

Abutment stiffnesses are determined directly from the earthquake motions recorded at the US 101/Painter Street Overpass using a simple equilibrium-based approach without finite-element modeling of the structure or the abutment-soil systems. The calculated abutment stiffnesses, which include the effects of soil-structure interaction and nonlinear behavior of the soil, are used to investigate variation of the abutment stiffness with its deformation during the earthquake and torsional motions of the road deck. Also evaluated are the CALTRANS, ASSHTO-83, and ATC- 6 procedures for estimating the abutment stiffness. It is demonstrated that stiffness of the abutment depends significantly on its deformation during the …

Method And Apparatus For Objective Evaluation Of Patent Ambulation, Balance And Weight Bearng Status, Eric B. Lancaster, Michael F. Kocher

Department of Agricultural and Biological Systems Engineering: Faculty Publications

A walker is provided which is equipped with detectors for measuring various loads and torques placed thereon by a user including right side and left side loads as well as torque loads on the handles of the walker and having time and distance detectors to allow the ambulation status of a user to be progressively monitored by medical personnel.

Tensile And Bearing Capacities Of Bolted Connections, Jeffrey L. Carril, Roger A. Laboube, Wei-Wen Yu

CCFSS Library (1939 - present)

PREFACE Experimental studies were preformed to investigate the tensile capacity, bearing capacity and the interaction of tension and bearing capacities of flat sheet cold-formed steel bolted connections. The effect of bolt hole deformation on the bearing capacity of bolted connections, was also investigated. In the experimental investigation, single shear flat sheet connections were investigated for single bolt and multiple bolt configurations. The intent of this investigation was to compare the current AISI and AISC Specifications for the nominal bearing and tensile capacities and to develop appropriate serviceability design criteria. A review and evaluation of past research on the tensile and …

Evaluation Of Kentucky’S Policy On Tourist Information Signs, Jerry G. Pigman

Kentucky Transportation Center Research Report

As a result of recommendations made by the Governor's Task Force on Signage and Tourism, the Transportation Cabinet requested that an evaluation be made of Kentucky's policy on tourist information signs. Among the tasks undertaken were a review of the formula tor Parks, Historic, and Recreation Area signs, a survey of interstates and parkways to determine the extent of the constraints imposed by the limitation of one supplemental sign tor each interchange approach, and an investigation of the potential for application of Tourist Oriented Directional signs (TODS).

The opportunity tor increased tourism through improvements in signing and accessibility was evaluated. …

Summary Of Stress Evaluations Of Welded Steel Bridges On Coal-Haul Routes, Theodore Hopwood Ii, Keith J. Hogan, Christopher M. Oberst

Kentucky Transportation Center Research Report

Stress analyses were performed on continuous girder welded steel bridges on extended weights coal-haul routes. The tests were intended to determine whether extended weight coal trucks pose fatigue problems to those bridges. Measurements were performed by strain gaging selected bridges subject to high coal transport tonnages. Stress measurements were conducted on fatigue-prone weld details or test sites where high tensile stresses were anticipated. Test sites on the bridges were instrumented with strain gages. Strains induced by routine traffic including coal trucks were monitored for periods of one to two weeks. Unattended monitoring of the variable amplitude strain data was performed …

Evaluation Of Flood Routing Techniques For Incremental Damage Assessment, Enan Fakhri Jayyousi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Incremental damage assessment is a tool used to assess the justification for expensive modifications of inadequate dams. The input data to incremental damage assessment are the output from the breach analysis and flood routing. For this reason, flood routing should be conducted carefully. Distorted results from the flood routing technique or unstable modeling of the problem will distort the results of an incremental damage assessment, because an error in the estimated incremental stage will cause a certain error in the estimated incremental damages.

The objectives of this study were (1) to perform a comprehensive survey of the available dam break …

Load Transfer Mechanisms For Piles In Soft Soils, Andrew L. Palmer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this thesis is to interpret pile load test data for several instrumented piles to determine the load transfer characteristics of driven piles in soft soils. Piles develop resistance to axial loads through two different mechanisms, side friction and end bearing. The rate that resistance develops is dependent upon soil type, pile type, and movement of the pile with respect to the soil. This thesis addresses load transfer for driven pipe piles in deep lacustrine deposits along the Wasatch Front area of Utah. The piles used in this study were installed for the support of highway structures in …

Design And Evaluation Of Stepped Spillways For High Dams, Jeffrey Scott Rau

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this research was to investigate the hydraulic performance of stepped spillways. A thorough investigation was made of all printed material on stepped spillways, and a summary of this material is presented in the text. Data from experiments in the laboratory were used to develop a design procedure for stepped spillways and hydraulic jump stilling basins. The experimental study was conducted at Utah State University - Utah Water Research Laboratory in Logan, Utah. Four models were built and tested in the laboratory under various flowrates.

The crest of the model spillway was constructed in the shape of a …

Use Of Multispectral Aerial Videography For Jurisdictional Delineation Of Wetland Areas, James A. Shoemaker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Multispectral aerial videography was used to reproduce the jurisdictional delineation of wetland area of approximately 50 hectares in Davis County, Utah Imagery from the system consisted of three-band composite with wavelengths covering 550 nm (±10 nm), 650 nm (±10 nm), and 850 nm (±10 nm). The site was overflown at three different flight dates during the 1992 growing season (June 2, July 22, October 1). Imagery resolution varied from 0.56 m to 0.81 m. Mosaiced images were analyzed with a Supervised clustering/maximum likelihood classifier, ISODATA clustering/Euclidan classifier, statistical clustering/maximum likelihood classifier, and fuzzy c-means clustering. Overall accuracies for wetland/upland designations …