Engineering Commons^™

The Study Of Price Accept Threshold For The ??Lue Highway??Tour Of The North-East Region In Taiwan, Hung-Yen Chou, Jin-Long Lu, Chiang Fu

Journal of Marine Science and Technology

The “Blue Highway” in the NE region of Taiwan includes the tour itineraries of Keelung-Suao, Suao-Hualien and Keelung-Hualien, each with its individual oceanic scenic features and its potential corresponding onshore scenic spots. This study explores the relationship between the “Blue Highway” tour portfolios and price attributes to collect the preference recognition of the public concerning the NE region “Blue Highway” tour itineraries and prices with the stated preference method. The utility function of the discrete choice model assumes the impact effect among attributes to be in a linear relationship plus percentages. The price threshold model improves the assumption of this …

Detection Of Voids In Prestressed Concrete Bridges Using Thermal Imaging And Ground-Penetrating Radar, David G. Pollock, Kenneth J. Dupuis, Benjamin Lacour, Karl R. Olsen

Faculty Publications - Biomedical, Mechanical, and Civil Engineering

Thermal imaging and ground-penetrating radar was conducted on concrete specimens with simulated air voids. For the thermal imaging inspections, six concrete specimens were constructed during the month of June 2007 to simulate the walls of post-tensioned box girder bridges. The objective was to detect simulated air voids within grouted post-tensioning ducts, thus locating areas where the post-tensioning steel strands are vulnerable to corrosion. The most important deduction taken from these inspections was that PT-ducts and simulated voids were more detectable in the 20 cm (8 in.) thick specimens than in the 30 cm (12 in.) thick specimens. While inspections of …

The North American Transportation Security Center, Steven Douglas Kreis, Michael M. Barclay

Kentucky Transportation Center Research Report

No abstract provided.

Approach Slope For Midwest Guardrail System, Erin A. Johnson, Karla A. Lechtenberg, Dean L. Sicking, Robert W. Bielenberg M.S.C.E., E.I.T., Ronald K. Faller, John R. Rohde, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Cable Median Barrier Guidelines, Dean L. Sicking, Karla A. Lechtenberg, Francisco Daniel Benicio De Albuquerque

Nebraska Department of Transportation: Research Reports

No abstract provided.

Practical Solution Concepts For Planning And Designing Roadways In Kentucky, Nikiforos Stamatiadis, Adam Kirk, Donald L. Hartman, Jerry G. Pigman

Kentucky Transportation Center Research Report

Kentucky’s highway agency has embarked upon an initiative tagged “Practical Solutions” which sets its goal toward reducing costs throughout the project development process extended into operations and maintenance of all highway facilities. This study focuses on the planning and design stages of project development. Developing a procedure that yields up to the maximum margin of return for the investment requires an approach that takes into account specific safety issues and the commensurate design elements for each roadway. Such an approach requires that the project 1) achieves the stated goals/objectives and 2) delivers the highest rate of return for the investment. …

Annual Update Of Data For Estimating Esal, Clark Graves, Jerry G. Pigman, Brad Rister, David Cain, Neil Tollner

Kentucky Transportation Center Research Report

No abstract provided.

Performance Evaluation Of Safety Grates For Cross-Drainage Culverts, Karla A. Polivka, Dean L. Sicking, Robert W. Bielenberg, John R. Rohde, Ronald K. Faller, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Impacto Socio-Económico Generado Por La Implementación Del Proyecto Transmilenio En El Tramo Comprendido Entre Las Calles Trece Y Octava Sur Sobre La Avenida Carrera 30 Nqs, Juan David Rocha Monsalve, Andrés Francisco Lozano Mendoza

Ingeniería Civil

No abstract provided.

The Development Research On Chinese Railway Logistics, Yuanyuan Zhang

World Maritime University Dissertations

No abstract provided.

Monitoring Culvert Load With Shallow Filling Under Geofoam Areas, Charlie Sun, Tommy C. Hopkins

Kentucky Transportation Center Research Report

Geofoam and the “Imperfect Ditch” method can be used effectively on embankment projects to reduce pressures on underground structures when sufficient fill height is available to create an arching effect. When the fill height is too shallow the arching effect cannot be created. However, the pressure acting on the underground structure can still be reduced by making use of the very small unit weight of lightweight geofoam material. In this study, stresses acting on a three-sided culvert were reduced using lightweight geofoam. Initially, the culvert had been designed to carry a 6-foot loading. During construction it was discovered that the …

Development Of A Problem-Based Learning (Pbl) And Cooperative Learning (Cl) Transportation Engineering Course For Undergraduate Students, Deogratias Eustace

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

This study reports the findings of a project that was done during the implementation of a problem-based learning (PBL) and cooperative learning (CL) elements into an undergraduate transportation engineering course. The study procedure used the student course evaluations, including a survey questionnaire, and university-wide standardized student evaluations. Additionally, student homework, tests, and exam grades were used as part of the evaluation process. Two methods of teaching formats were evaluated: the traditional teaching method of lecturing and using end-of-chapter book questions for homework assignments and the new currently used teaching method of student field data collection, preparation of a lab report …

Analysis Of Traffic Crash Data In Kentucky (2003 – 2007), Eric R. Green, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

This report documents an analysis of traffic crash data in Kentucky for the years of 2003 through 2007. A primary objective of this study was to determine average crash statistics for Kentucky highways. Average and critical numbers and rates of crashes 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 crashes.

The other primary objective of this study was to provide data that can be used in the preparation of the problem identification portion of Kentucky’s Annual Highway Safety …

2008 Safety Belt Usage Survey In Kentucky, Kenneth R. Agent, Eric R. Green

Kentucky Transportation Center Research Report

The objective of this study was to establish 2008 safety belt and child safety seat usage rates in Kentucky. The 2008 survey continues to document the results after enactment of the initial “secondary enforcement” statewide mandatory safety belt law in 1994 and the subsequent change to “primary enforcement” which was enacted in 2006. Data were collected at 200 randomly selected sites spread across Kentucky. Data from the individual sites were combined into a statewide percentage considering roadway functional classification, geographic region, and vehicle miles traveled.

The data show that the usage rate in 2008 (73.3 percent) increased compared to 2007 …

Repair Of Full-Scale Timber Bridge Chord Members By Shear Spiking, Travis A. Burgers, Richard M. Gutkowski, Jeno Balogh, Donald W. Radford

Mechanical Engineering Faculty Publications

The addition of vertically-oriented shear spikes (fiberglass reinforced polymer rods) was shown to increase the effective stiffness of the stringers of a full-scale timber bridge chord specimen. Results found from the flexural load testing of a full-scale timber bridge chord laboratory specimen are presented. Reinforcement was provided with 19 mm diameter shear spikes bonded to the wood by an epoxy resin. The bridge chord specimen was intentionally damaged to simulate degradation. Shear spikes were then installed from the top of the member into pre‑drilled holes to provide horizontal shear resistance and to improve the flexural effective stiffness. Results from the …

Evaluation Of Kentucky’S “Click It Or Ticket” 2008 Campaign, Kenneth R. Agent, Eric R. Green, Ronald E. Langley

Kentucky Transportation Center Research Report

The objective of this report was to document the results of the “Click It or Ticket” 2008 campaign in Kentucky. The campaign involved a combination of earned media, paid media, and enforcement. The earned media started about three weeks prior to Memorial Day 2008 and continued through the enforcement period. The paid media campaign was for the two weeks prior to Memorial Day while the enforcement period was a two-week period including the week before and the week of Memorial Day.

The evaluation of the campaign included documenting the activities associated with the program (publicity and enforcement) and evaluating the …

Implementation Of Conductive Concrete For Deicing (Roca Bridge), Christopher Y. Tuan

Nebraska Department of Transportation: Research Reports

No abstract provided.

Structural Evaluation Of The John A. Roebling Suspension Bridge – Element Level Analysis, Ching Chiaw Choo, Issam E. Harik

Kentucky Transportation Center Research Report

The primary objective of the structural evaluation of the John A. Roebling Bridge is to determine the maximum allowable gross vehicle weight (GVW) that can be carried by the bridge deck structural elements such as the open steel grid deck, channels, standard sections, or built-up sections. To achieve this objective, an “Element Level Analysis” is carried out. The maximum allowable GVW for different truck and bus types are presented for different levels of structural elements sectional loss. The loss or reduction in element sectional properties is due to rust, cracks, etc.

The critical member in the bridge deck is the …

Structural Evaluation Of The John A. Roebling Suspension Bridge, Ching Chiaw Choo, Issam E. Harik

Kentucky Transportation Center Research Report

The primary objective of the structural evaluation of the John A. Roebling Bridge is to determine the maximum allowable gross vehicle weight (GWV) that can be carried by the bridge deck structural elements such as the open steel grid deck, channels, standard sections, or built-up sections. To achieve this objective, four levels of analysis are carried out: "Element Level", "Sectional level 1", "Sectional level II", and "Global level" analysis.

The four levels of analysis yield a load envelope that encapsulates the maximum and minimum allowable loads. The maximum allowable gross vehicle weight (GWV) for different truck and bus types are …

Design Evaluation Of A Low-Tension Cable Guardrail End Terminal System, Cody S. Stolle, Karla A. Polivka, Ronald K. Faller, John R. Rohde, Dean L. Sicking, Rebecca A. Hitz, Kirk J. Molacek, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Evaluation Of Critical Flare Rates For The Midwest Guardrail System, Cody S. Stolle, Karla A. Polivka, Ronald K. Faller, Robert W. Bielenberg M.S.C.E., E.I.T., Dean L. Sicking, John R. Rohde, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Design And Evaluation Of A Low-Tension Cable Guardrail End Terminal System, Rebecca A. Hitz, Kirk J. Molacek, Cody S. Stolle, Karla A. Polivka, Ronald K. Faller, John R. Rohde, Dean L. Sicking, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Qc/Qa: Evaluation Of Effectiveness In Kentucky, Kamyar C. Mahboub, Paul M. Goodrum, Andy Glasglow, Jason Enlow, Nick Hendrix, Moin Uddin

Kentucky Transportation Center Research Report

Quality control and quality assurance in the highway industry is going through a cultural shift. There is a growing trend toward using the contractor data for acceptance and payment purposes. This has led to serious concerns about conflicts of interests. The question remains: are there adequate safeguards in place? To address these concerns, a number of asphalt and concrete QC/QA projects in Kentucky were examined and statistical analyses were conducted. This report presents a summary of findings and recommendations. Generally speaking, the Kentucky experience revealed that the QC/QA system is working well, and the agency’s random inspection data when compared …

Service Quality Radar Map And Two-Stage Service Quality Score, Kee-Kuo Chen, Ding-Hsun Hsiao, Cheng-Hung Arthur Hsieh

Journal of Marine Science and Technology

In an attempt to portray all information released from the service quality studies the service quality radar map (SQRM), is designed in this paper firstly and a generalized service quality score GSQS follows. GSQS is defined by way of the weighted average of differences between relative frequencies of customers’ performance perception and performance expectation, thus can avoid the problems involved in the gap-based SERVQUAL scale and caused by skewed distributions. A special case of GSQS, the stochastic dominance service quality score (SDSQS) whose ideal come from the second stochastic dominance criterion is used to illustrate how a standardized score can …

Detailed Seismic Evaluation Of Bridges On And Over The Parkways In Western Kentucky, Jian Xie, Issam E. Harik, Tong Zhao

Kentucky Transportation Center Research Report

This report outlines a rating system and details an evaluation procedure for the seismic evaluation of highway bridges. These processes are later used to investigate the structural integrity of selected highway bridges on and over the parkways in Western Kentucky. A total of 349 bridges were rated with the bridge ranking system, and 17 were selected for detailed seismic evaluation.

The capacity/demand ratio method developed by the Federal Highway Administration is employed for the detailed evaluation of bridges. The evaluation involves creating three-dimensional finite element models for all 17 bridges. Dynamic analysis is performed for a projected 250-year event. Among …

Evaluation Of Median Barrier Safety Issues, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

The objective of this study was to evaluate the effectiveness of the Brifen TL-4 and Trinity CASS median cable barrier systems in preventing cross-median collisions on sections of I-64, I-71, and I-265 (Brifen system) and I-265 (Trinity system) in Jefferson County and on KY 4 (Brifen system) in Fayette County. An effort was made to identify crashes which involved a vehicle crossing a median. Using specific logic to identify this type of crash, 392 crashes were identified for the five-year period of 2001 through 2005. Using crash and mileage data resulted in an average of 0.28 crossover crashes per mile …

Seismic-Hazard Maps And Time Histories For The Commonwealth Of Kentucky, Zhenming Wang, Issam E. Harik, Edward W. Woolery, Baoping Shi, Abheetha Peiris

Kentucky Transportation Center Research Report

The ground-motion hazard maps and time histories for three earthquake scenarios, expected earthquakes, probable earthquakes, and maximum credible earthquakes on the free surface in hard rock (shear-wave velocity >1,500 m/s), were derived using the deterministic seismic hazard analysis. The results are based on (1) historical observations, (2) instrumental records, and (3) current understanding of the earthquake source, recurrence, and ground-motion attenuation relationship in the central United States. It is well understood that there are uncertainties in the ground motion hazard maps because of the uncertainties inherent in parameters such as earthquake location, magnitude, and frequency used in the study. This …

Seismic Evaluation And Ranking Of Embankments For Bridges On And Over The Parkways In Western Kentucky, Han Shan Ding, Issam E. Harik, Ching Chiaw Choo

Kentucky Transportation Center Research Report

This study represents one of the Seismic Evaluation of Bridges on and over the Parkways in Western Kentucky investigative series. The effort is focused on the seismic vulnerability of bridge embankments against slope instability and liquefaction potential. An evaluation and rating procedure is presented to assist in identifying and prioritizing bridge embankments that are susceptible to failure due to projected seismic events.

To expedite the process, the algorithm titled Seismic Assessment System for Bridges (SASB) was programmed. Three hundred and eight-nine (389) bridge embankments (parallel bridges included) along the five western Kentucky parkways – Audubon, Pennyrile, Purchase, Western Kentucky, and …

Equivalent Barge And Flotilla Impact Forces On Bridge Piers, Peng Yuan, Issam E. Harik

Kentucky Transportation Center Research Report

Bridge piers located in navigable inland waterways are designed to resist impact forces from barges and flotillas in addition to other design considerations (e.g., scour, dead and live loads, etc.). The primary design tool for estimating these forces is the AASHTO Guide Specification which provides a simple hand calculation method for determining an “equivalent impact force”. The simplicity comes at a cost of excluding the effect of the pier shape, impact duration, and interaction between barges in a flotilla. The objective of this report is to present a hand calculation method for determining barge or flotilla equivalent static impact forces …

Compost For Steep Slope Erosion, Sudhir Palle, Stephen F. Higgins, Theodore Hopwood Ii

Kentucky Transportation Center Research Report

This study was initiated to develop guidelines for maintenance erosion control measures for steep slopes. The study focused on evaluating and monitoring KY-31 fescue germination rates using two media treatments 1) 100 percent by weight compost and 2) 70 percent compost with 30 percent soil) with different seeding rates on a pilot project to establish vegetation on slopes with grades of 3:1 or steeper.

The pilot program demonstrated that weed infestation and erosion problems on slopes can be minimized by use of properly formulated compost with sufficient seed. It also showed that the seeding rate of 1 lb/1,000 ft2 slope …