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Articles 1591 - 1620 of 2550

Full-Text Articles in Civil and Environmental Engineering

Seismic Design Of Deep Foundations, Antonio Bobet, Rodrigo Salgado, Dimitrios Loukidis Jan 2001

Seismic Design Of Deep Foundations, Antonio Bobet, Rodrigo Salgado, Dimitrios Loukidis

JTRP Technical Reports

Detailed investigations of pile foundations affected by earthquakes around the world since the 1960’s indicate that pile foundations are susceptible to damage to such a degree that the serviceability and integrity of the superstructure may be affected. Although numerous cases of seismically damaged piles are reported, the detailed mechanisms causing the damage are not yet fully understood. As a consequence, an effective seismic design of pile foundations has not been yet established in practice. Many road bridge structures supported on piles exist in southern Indiana. This is a region where the risk of occurrence of a dangerous earthquake is high …


Evaluation Of The Implementation Of Hot Pour Sealants And Equipment For Crack Sealing In Indiana, David R. Ward Jan 2001

Evaluation Of The Implementation Of Hot Pour Sealants And Equipment For Crack Sealing In Indiana, David R. Ward

JTRP Technical Reports

This study was initiated as an implementation effort that would monitor, assist with and report on a new maintenance activity involving the trial use of hot pour crack sealant. Work associated with this new activity was qualitatively assessed over a period of several years. INDOT began by purchasing six oil-jacketed melters that were distributed to various sub-districts. Previous INDOT research indicated using hot pour sealant might save on labor expense because it lasted significantly longer than the current emulsion. Random observations were made of various sub-district crews using hot pour sealant and the results were reported to appropriate personnel. Inspections …


Development And Application Of Linear Scheduling Techniques To Highway Construction Projects, D. J. Harmelink, Rene Antonio Yamin Jan 2001

Development And Application Of Linear Scheduling Techniques To Highway Construction Projects, D. J. Harmelink, Rene Antonio Yamin

JTRP Technical Reports

Crucial to the successful outcome of major highway construction and reconstruction projects today is the ability to accurately plan, predict and control the construction process. Evermore sensitive to budget control, schedule control, resource allocation and impacts on the motoring public, highway constructors today require sophisticated project management tools to achieve project goals. One of the tools recently being used across the country is project scheduling. The use of scheduling techniques on highway projects has grown out of the successful application of these methods to building construction for the past 20 to 30 years. Unfortunately, the effective application of traditional scheduling …


Development Of Improved Pavement Performance Prediction Models For The Indiana Pavement Management System, Sedat Gulen, Karen Zhu, John Weaver, Jie Shan, William F. Flora Jan 2001

Development Of Improved Pavement Performance Prediction Models For The Indiana Pavement Management System, Sedat Gulen, Karen Zhu, John Weaver, Jie Shan, William F. Flora

JTRP Technical Reports

The Indiana Department of Transportation (INDOT) is increasingly committed to the Pavement Management System. For this reason, updated simple pavement performance prediction models with the least number of explanatory (independent) variables are required to predict the performance of various pavement types for future planning of rehabilitation or replacement. In Indiana, the two main pavement types are jointed concrete pavement (JCP) and bituminous pavement (BIT). 1999 and 2000 year data were used to develop regression models for different pavement types for the Interstate and Non- Interstate Roads systems. The International Roughness Index (IRI), in inches per mile, was mainly used for …


2001 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Indiana Ltap Jan 2001

2001 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Indiana Ltap

Indiana Local Technical Assistance Program (LTAP) Directory

Contact information for agency officials and employees responsible for Indiana’s local road infrastructure.


An Analysis Of Speed Limit Policies For Indiana, Nisar M. Khan, Kumares C. Sinha Jan 2001

An Analysis Of Speed Limit Policies For Indiana, Nisar M. Khan, Kumares C. Sinha

JTRP Technical Reports

The repeal of the National maximum Speed Limit law in 1995 enabled individual states to set their own speed limits. Speed limits are necessary to ensure mobility while preserving highway safety. It is important that states continually monitor and evaluate existing operating speeds in the context of changing patterns of travel, and changing characteristics of highways, vehicles, drivers, and land-use. Any efforts to review existing speed limits should be accompanied by evaluation of policy impacts such as safety and economic productivity. The goal of this research is to develop a set of speed limit policy guidelines for the state. The …


Design Guidelines For Deploying Closed Loop Systems, Andrew P. Nichols, Darcy M. Bullock Jan 2001

Design Guidelines For Deploying Closed Loop Systems, Andrew P. Nichols, Darcy M. Bullock

JTRP Technical Reports

Closed loop systems are becoming the preferred method of operating coordinated traffic signal systems. Some of the benefits of a closed loop system include remote controller access, synchronization of controller time clocks, and orderly transition between coordination plans. With ensured time clock synchronization, the coordination of traffic signals becomes more reliable, which leads to optimal vehicle progression through the system. However, due to the complexity and relative infrequent implementation in more rural districts of closed loop systems, it is very difficult to obtain a successful deployment. This manual provides a step-by-step procedure for designing the parameters, implementing, testing, and field …


Performance Of Bridge Decks And Girders With Lightweight Aggregate Concrete, V. 2 Of 2, J. A. Ramirez, J. Olek, Eric Joseph Rolle, Brian Joseph Malone Oct 2000

Performance Of Bridge Decks And Girders With Lightweight Aggregate Concrete, V. 2 Of 2, J. A. Ramirez, J. Olek, Eric Joseph Rolle, Brian Joseph Malone

JTRP Technical Reports

Structural lightweight concrete is a very versatile material and Haydite and Minergy lightweight aggregates can be utilized in the mixture development of concrete for use in girders and decks in bridges. More widespread use of lightweight aggregates (LWA) would result in savings in construction cost due to considerable dead load reduction.

The materials phase of this research study evaluated the fresh concrete properties (slump, unit weight, and air content), the mechanical properties of hardened concrete (compressive strength, tensile strength, flexural strength, static and dynamic modulus of elasticity, Poisson’s Ratio, and temperature development), and durability related parameters (air void distribution, freeze-that …


2000 Indiana County Highway Department Wage And Salary Survey, Indiana Ltap Sep 2000

2000 Indiana County Highway Department Wage And Salary Survey, Indiana Ltap

Indiana Local Technical Assistance Program (LTAP) Publications

Included in this publication are wage and salary figures for the major salaried and hourly county highway positions in Indiana. In addition, the numbers of employees working under each job title are tabulated, and the ratio of total number of employees per mile of county road is displayed. The following series of tables are divided into four categories: administration, maintenance and repair, general and undistributed, and cumulative bridge. The appendix presents the recommended methods for calculating the labor burden for both salaried and hourly employees. Also included are generalized worksheets, which may be copied and used to calculate labor burden …


Bridge Rail Rating Guide, Marc Friedman Aug 2000

Bridge Rail Rating Guide, Marc Friedman

Indiana Local Technical Assistance Program (LTAP) Publications

This guide provides criteria and check lists for rating bridge railings, approach rails, tranisitions, and end terminals to be used during a visual inspection of these bridge elements.


2000 Summary Of Road And Street Inventory Data For Indiana Lpa's For Adams County, In, Indiana Ltap Apr 2000

2000 Summary Of Road And Street Inventory Data For Indiana Lpa's For Adams County, In, Indiana Ltap

Indiana Local Technical Assistance Program (LTAP) Publications

This report provides roadway mileage summary information for each incorporated agency within Adams County as well as statewide summaries of mileage broken down by agency type, roadway functional classification, surface type, and federal-aid system for all local roads and streets within Indiana. The body of this report has been divided into three distinct sections, Reference Reports, Statewide Summary Reports, and County Specific Reports.

In Section 1, Reference Reports, the statewide functional classifications, surface types, and federal-aid systems are given in three reports. These three reports serve as an overview of the possible functional classifications, surface types, or federal-aid systems, which …


Indiana High Accuracy Reference Network (Harn) Final Report, Boudewijn H.W. Van Gelder, David J. Vandenberg, Aaron W. Braun Mar 2000

Indiana High Accuracy Reference Network (Harn) Final Report, Boudewijn H.W. Van Gelder, David J. Vandenberg, Aaron W. Braun

Indiana Local Technical Assistance Program (LTAP) Publications

This report has three main areas of interest. First, a brief discussion on the need for the Indiana HARN and why this was an important task. Second, a summary of the details surrounding the Indiana HARN survey. Finally, the station description of the HARN point in your county is attached with a map of the general area surrounding this point. We have also included a discussion on monument preservation with tips on how keep the high accuracies associated with your point(s). Also, a section is included on how the HARN is being used in Indiana with a few success stories.


A Methodology To Estimate Load And Non-Load Shares Of Highway Pavement Routine Maintenance And Rehabilitation Expenditures, Zongzhi Li, Kumares C. Sinha Jan 2000

A Methodology To Estimate Load And Non-Load Shares Of Highway Pavement Routine Maintenance And Rehabilitation Expenditures, Zongzhi Li, Kumares C. Sinha

JTRP Technical Reports

The present study focused on the estimation of load and non-load shares of pavement maintenance and rehabilitation expenditures. The information provides the basis for the allocation of pavement-related expenditures in a highway cost allocation study. A comprehensive database was developed in the study, and an aggregate performance approach was used based on econometric models. This approach utilizes the marginal effect of traffic loading to quantify the load and non-load shares of pavement routine maintenance and rehabilitation expenditures. The study revealed that the share of pavement damage attributable to load and non-load factors depends on several factors such as the type …


A Field Study Of Scour Monitoring Devices For Indiana Streams, Thomas J. Cooper, Huey-Long Chen, Dennis A. Lyn, A. Ramachandra Rao, A. G. Altschaeffl Jan 2000

A Field Study Of Scour Monitoring Devices For Indiana Streams, Thomas J. Cooper, Huey-Long Chen, Dennis A. Lyn, A. Ramachandra Rao, A. G. Altschaeffl

JTRP Technical Reports

INDOT is considering the deployment of fixed scour-monitoring instrumentation as part of a systematic response to the problem of scour around bridge piers. Fixed-in-place automated scour-monitoring devices measure the depth of scour at the point where they are installed. Unless they are installed at the location where maximum scour occurs, their readings may give a misleading estimate of scour potential. This raises a number of technical issues concerning their effective deployment and the interpretation of the collected data, which should be resolved in order to maximize the benefits to INDOT from using these monitoring devices. These include the location of …


Borman Expressway Point-To-Point Wireless Modem, J. V. Krogmeier, Michael P. Fitz Jan 2000

Borman Expressway Point-To-Point Wireless Modem, J. V. Krogmeier, Michael P. Fitz

JTRP Technical Reports

The Federal Highway Administration has a nationwide allocation of five frequency pairs in the 220-222 MHz Narrowband Radio Services band which are intended for application in Intelligent Transportation Systems. These frequencies are available for use by state DOTs (subject to FHWA approval) and provide an attractive solution for certain low to medium bit rate data communications applications. However, given the limited bandwidth available in these channels, very efficient modems will be required to make maximum beneficial use of this resource. The goal of this project was to design, field test, and deploy a digital radio which uses the 220-222 MHz …


Construction Data Management 2000, Bob G. Mccullouch Jan 2000

Construction Data Management 2000, Bob G. Mccullouch

JTRP Technical Reports

Construction Data Management 2000 was a project designed to help guide INDOT into using emerging technologies to meet data management needs in the construction process. The landscape at INDOT has changed, having been shaped through the factors of increased workloads, a reduced number of employees, and increasing dependence on outside consultants to fill the needs. This has resulted in changing roles for INDOT employees creating differing data management needs. This project looked into this area, studied various answers, and is recommending solutions. This report describes the work performed and proposes recommendations with supporting documentation. The original project scope had the …


Determination Of Practical Esals Per Truck Values On Indiana Roads, Sedat Gulen, John Nagle, John Weaver, Victor Lee Gallivan Jan 2000

Determination Of Practical Esals Per Truck Values On Indiana Roads, Sedat Gulen, John Nagle, John Weaver, Victor Lee Gallivan

JTRP Technical Reports

The Indiana Department of Transportation (INDOT) has been using ESAL (Equivalent Single Axle Load) values for pavement design. The current ESAL values were obtained in the late 1970. However, truck deregulation and higher allowable maximum loads have increased the 1970's values. Updated ESAL values are needed for better road designs. The 1998 and 1999 traffic data from the all Weight-in-Motion (WIM) stations were obtained and used to compute updated ESAL values for multiple unit trucks (Class 9/F-9) and single unit trucks (Class 5, 6 and 7). Statistical analyses indicated that average ESAL values for 1998 and 1999 are statistically the …


Field Implementation Of Bioremediation At Indot Facilities-Phase I, Loring F. Nies, Brett Robert Baldwin, Matthew B. Mesarch Jan 2000

Field Implementation Of Bioremediation At Indot Facilities-Phase I, Loring F. Nies, Brett Robert Baldwin, Matthew B. Mesarch

JTRP Technical Reports

Bioremediation is often the most cost-effective and successful technique available for the remediation of soils and groundwater contaminated with organic pollutants (e.g. petroleum). The goal of bioremediation is to stimulate naturally occurring microorganisms to biodegrade the contaminants to harmless products. To be in compliance with EPA regulations all underground fuel storage tanks must have spill, leak and corrosion protection. Many older obsolete tanks had deteriorated to the extent that petroleum products had leaked into the environment. In the past, petroleum contaminated soils were typically excavated, followed by landfilling of the contaminated material. The continued use of landfills for disposal of …


Evaluation Of Scour And Stream Stability By Using Caesar, Huey-Long Chen, A. Ramachandra Rao, Dennis A. Lyn, A. G. Altschaeffl Jan 2000

Evaluation Of Scour And Stream Stability By Using Caesar, Huey-Long Chen, A. Ramachandra Rao, Dennis A. Lyn, A. G. Altschaeffl

JTRP Technical Reports

The performance of an expert system (CAESAR for Catalog and Expert Evaluation of Scour Risk and River Stability) for an initial evaluation of scour and stream stability was assessed. Three alternative scour indices are used to compare with the evaluation results of CAESAR. These scour indices include the Observed Streambed Scour index, the INDOT Potential Streambed Scour Index, and the Simon Potential Streambed Scour Index. Ten bridges in Indiana are selected for evaluation in this study. The scour indices and the field inspection information required by CAESAR are retrieved from the USGS data base. In general, the results show that …


Effect Of Fine Aggregate Angularity On Asphalt Mixture Performance, Chih-Jen Lee, Thomas D. White, Terry R. West Jan 2000

Effect Of Fine Aggregate Angularity On Asphalt Mixture Performance, Chih-Jen Lee, Thomas D. White, Terry R. West

JTRP Technical Reports

Superpave aggregate qualification includes the fine aggregate angularity (FAA). Fine aggregate angularity levels used in the Superpave system are below 40, 40 to 45 and above 45. The higher values are specified for layers near the surface and for higher traffic levels. The objective of this study was to address the effect of fine aggregate angularity on asphalt mixture rutting performance. A total of 18 mixtures were designed according to the Superpave volumetric design criteria. A surface mixture utilizing a partially crushed 9.5mm coarse aggregate and a single PG 64-22 binder were utilized. The poor quality coarse aggregate was used …


Indot Training Needs Study, Ray E. Eberts, Jodi S. Goodman, Bob G. Mccullouch, Kumares C. Sinha Jan 2000

Indot Training Needs Study, Ray E. Eberts, Jodi S. Goodman, Bob G. Mccullouch, Kumares C. Sinha

JTRP Technical Reports

During the strategic plan development process, the INDOT staff identified a list of possible training needs, which included suggestions for workshops, certification procedures, training sessions for interpersonal communication, computer skills, and video conferencing, as well as more specific topics such as hazardous areas and clean up of contaminated soil. This study’s objective is to assess current and future training needs at INDOT on a comprehensive basis, as well as analyze current and future trends in order to fulfill the INDOT strategic goals and objectives.


Optical Imaging Method For Bridge Painting Maintenance And Inspection, Luh M. Chang, Yasser Abdelrazig, Po-Han Chen Jan 2000

Optical Imaging Method For Bridge Painting Maintenance And Inspection, Luh M. Chang, Yasser Abdelrazig, Po-Han Chen

JTRP Technical Reports

The term "quality" is defined as the conformance to predetermined requirements or specifications. These requirements may be set in terms of the end result required or as a detailed description of how work should be executed. Recently, there has been increasing interest in quality assurance in the construction industry. Quality assurance includes design and planning, sampling, inspection, testing, and assessment to ensure that end products perform according to specifications. This research proposes a new quality assessment model for highway steel bridges and more specifically for coating rust assessment. The research proposes a hybrid model using image processing and neural networks …


New Treatment Combinations For Vegetation Management Along Indiana Roadsides, D. James Morré Jan 2000

New Treatment Combinations For Vegetation Management Along Indiana Roadsides, D. James Morré

JTRP Technical Reports

This report represents results from a project for research to develop and implement new treatment mixtures for control of problem brush, trees and other woody species and herbicide-resistant weeds along Indiana roadsides. An environmentally safe mixture of trichlopyr (Galon Herbicide) and ammonium nitrate for one application control of deciduous roadside vegetation was developed. Also discovered and developed was a new, environmentally safe and effective TR series of additives that enhance the action of the auxin herbicides (trichlopyr, 2,4-D, picloram) for inclusion in both the brush control mixtures and control of milkweed, Canada thistle, bindweed, ground cherry and other perennial, herbicide-resistant …


A Laboratory Sensitivity Study Of Hydraulic Parameters Important In The Deployment Of Fixed-In-Place Scour-Monitoring Devices, Dennis A. Lyn, E. Neseem, A. Ramachandra Rao, A. G. Altschaeffl Jan 2000

A Laboratory Sensitivity Study Of Hydraulic Parameters Important In The Deployment Of Fixed-In-Place Scour-Monitoring Devices, Dennis A. Lyn, E. Neseem, A. Ramachandra Rao, A. G. Altschaeffl

JTRP Technical Reports

INDOT is considering the deployment of fixed scour-monitoring instrumentation as part of a systematic response to the problem of scour around bridge piers. Fixed-in-place automated scour-monitoring devices measure the depth of scour at the point where they are installed. Unless they are installed at the location where maximum scour occurs, their readings may give a misleading estimate of scour potential. This raises a number of technical issues concerning their effective deployment and the interpretation of the collected data, which should be resolved in order to maximize the benefits to INDOT from using these monitoring devices. These include the location of …


Monitoring Of Long-Term Performance Of Highway Bridge Columns Retrofitted By Advanced Composite Jackets In Indiana, Ming-Hung Teng, Elisa D. Sotelino, Wai-Fah Chen Jan 2000

Monitoring Of Long-Term Performance Of Highway Bridge Columns Retrofitted By Advanced Composite Jackets In Indiana, Ming-Hung Teng, Elisa D. Sotelino, Wai-Fah Chen

JTRP Technical Reports

The service life of highway bridges is limited by the deterioration of their substructure components. In the U.S., it is estimated that more than 240,000 (about 40%) of the highway bridges are functionally or structurally deficient. Repairing these deteriorated bridges using traditional methods is usually time-consuming and expensive. Furthermore, these methods are such that they can cause a number of problems, such as being a threat to public safety and severe traffic disruption. Thus, it is important that new safer and more efficient methods be developed. Fiber Reinforced Plastics (FRP) have a great potential to provide such a solution. Due …


2000 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Indiana Ltap Jan 2000

2000 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Indiana Ltap

Indiana Local Technical Assistance Program (LTAP) Directory

Contact information for agency officials and employees responsible for Indiana’s local road infrastructure.


2000 Bridge Sufficiency Rating Report For All Indiana Counties, Indiana Ltap Jan 2000

2000 Bridge Sufficiency Rating Report For All Indiana Counties, Indiana Ltap

Indiana Local Technical Assistance Program (LTAP) Publications

This report provides bridge sufficiency rating information for each county bridge in each Indiana county. County officials can view a quick overall assessment of their bridge needs. This information is a convenient starting point for formulating a long-range plan to cope with their county bridge deficiencies.


Utilizing Gis Technology To Improve Indot Pavement Friction Data Management And Distribution, Karen Zhu Jan 2000

Utilizing Gis Technology To Improve Indot Pavement Friction Data Management And Distribution, Karen Zhu

JTRP Technical Reports

Pavement friction condition provides an important parameter in selecting highway rehabilitation and maintenance projects. The Research Division of Indiana Department of Transportation has been conducting annual pavement friction testing on the Indiana highway network. Due to the large amount of data accumulated, an efficient system is in demand for data management. In this project, we developed a computer program that constitutes an integrated system for friction data management and distribution. In the developed system, database technology was utilized for data storage and organization; networking technology was utilized for real-time data distribution; geographic information systems (GIS) technology as well as computer …


Examination Of Post-Tensioned Steel Bridges In Indiana, Hung-I Wu, Mark D. Bowman Jan 2000

Examination Of Post-Tensioned Steel Bridges In Indiana, Hung-I Wu, Mark D. Bowman

JTRP Technical Reports

The purpose of the research study is to conduct an investigation to understand the performance of a relatively new type of bridge construction that involves prestressed (post-tensioned) steel-concrete composite bridge members. Strictly speaking, the technical and economical advantages of this type of structure have been understood for several decades. However, the application of this concept to practice is still very limited due to difficulties associated with the post-tensioning anchorage. The study was thus intended to explore the mechanical behavior of such construction. Both the short-term and long-term bridge performance were evaluated in this study.

The investigation included experimental as well …


Development Of Closed Loop System Evaluation Equipment And Procedures, Eric J. Nelson, Montasir Abbas, Gary E. Shoup, Darcy M. Bullock Jan 2000

Development Of Closed Loop System Evaluation Equipment And Procedures, Eric J. Nelson, Montasir Abbas, Gary E. Shoup, Darcy M. Bullock

JTRP Technical Reports

Modern traffic control systems are complex entities whose performance should be thoroughly quantified prior to deployment. However, many of the advanced features available with this control equipment, such as preemption and real-time control strategies, are typically proprietary in nature, and therefore not incorporated into standard simulation models. Since it is not desirable for the engineer to learn in a field environment, under live traffic conditions, this research presents a rational procedure for evaluating and validating such control strategies in a laboratory setting. This document explores three aspects of traffic signal systems, which include the advanced control settings for single controller …