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Fatigue Strength And Evaluation Of Sign Structures, Volume 2: Sign Structure Inspection Manual, Xuejun Li, Timothy M. Whalen, Mark D. Bowman
Fatigue Strength And Evaluation Of Sign Structures, Volume 2: Sign Structure Inspection Manual, Xuejun Li, Timothy M. Whalen, Mark D. Bowman
JTRP Technical Reports
This is the second volume of a two-volume final report presenting the findings of the research work that was undertaken to evaluate the fatigue behavior of sign structures and, based on that evaluation, to recommend an inspection plan that can be effectively used to detect and minimize possible deterioration due to wind induced loadings of sign structures. The study included a number of signs that are commonly used in Indiana: single-mastarm and double-mastarm cantilever sign structures, box-truss sign structures, tri-chord sign structures, and monotube sign structures. Sign structures with typical dimensions and details were selected as prototypes for each of …
Fatigue Behavior Of Beam Diaphragm Connections With Intermittent Fillet Welds, Part I, Volume 1, Field Evaluation, Tammy L. Canna, Mark D. Bowman
Fatigue Behavior Of Beam Diaphragm Connections With Intermittent Fillet Welds, Part I, Volume 1, Field Evaluation, Tammy L. Canna, Mark D. Bowman
JTRP Technical Reports
This report is the first of a two-part, three volume final report presenting the findings of the research work that was undertaken to evaluate the behavior of Indiana highway bridges with diaphragm members welded directly to the web of the primary beams and girders. Fatigue cracks have been observed at several bridges that utilize the welded diaphragm connection. The seriousness of the cracking and the corresponding potential risk on the integrity of the bridge superstructure were assessed. Inspection and repair guidelines for bridges with the welded diaphragm connections were also developed as part of the research effort. This volume presents …
Fatigue Behavior Of Beam Diaphragm Connections With Intermittent Fillet Welds, Part I, Volume 2, Laboratory Fatigue Evaluation, Amy S. Barth, Mark D. Bowman
Fatigue Behavior Of Beam Diaphragm Connections With Intermittent Fillet Welds, Part I, Volume 2, Laboratory Fatigue Evaluation, Amy S. Barth, Mark D. Bowman
JTRP Technical Reports
This report is the second of a two-part, three volume final report presenting the findings of the research work that was undertaken to evaluate the behavior of Indiana highway bridges with diaphragm members welded directly to the web of the primary beams and girders. Fatigue cracks have been observed at several bridges that utilize the welded diaphragm connection. The seriousness of the cracking and the corresponding potential risk on the integrity of the bridge superstructure were assessed. Inspection and repair guidelines for bridges with the welded diaphragm connections were also developed as part of the research effort. This volume presents …
The Examination Of Infra-Red Techniques For Inspection Of Steel Structures I & Ii, Vachirapun Trakulyingyong, Mark D. Bowman
The Examination Of Infra-Red Techniques For Inspection Of Steel Structures I & Ii, Vachirapun Trakulyingyong, Mark D. Bowman
JTRP Technical Reports
Infra-red thermography systems that have been developed over the last few years offer great potential to locate and discover flaws in steel highway bridge structures at a relatively early stage in their development. Under ideal conditions, the use of infra-red instrumentation should allow bridge inspection personnel to rapidly scan the structure and determine if a potential structural problem has developed. If a problem spot is located by the infra-red camera, then the trouble spot can be examined carefully to determine the need for corrective maintenance. The primary purpose of this research study is to evaluate the accuracy and reliability of …
Fatigue Behavior Of Beam Diaphragm Connections With Intermittent Fillet Welds: Part Ii, Brittle Fracture Examination Of The I-64 Blue River Bridge, Mark D. Bowman
JTRP Technical Reports
This report is the second of a two-part, three volume final report presenting the findings of the research work that was undertaken to evaluate the behavior of Indiana highway bridges with diaphragm members welded directly to the web of the primary beams and girders. Fatigue cracks have been observed at several bridges that utilize the welded diaphragm connection. The seriousness of the cracking and the corresponding potential risk on the integrity of the bridge superstructure were assessed. Inspection and repair guidelines for bridges with the welded diaphragm connections were also developed as part of the research effort. This volume presents …
Optical Imaging Method For Bridge Painting Maintenance And Inspection, Luh M. Chang, Yasser Abdelrazig, Po-Han Chen
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 …
Steel Bridge Protection Policy: Main Report, Luh M. Chang, Tarek Zayed, Jon D. Fricker
Steel Bridge Protection Policy: Main Report, Luh M. Chang, Tarek Zayed, Jon D. Fricker
JTRP Technical Reports
The study identifies various painting systems that are successfully used in Indiana’s surrounding states and other industries. The identified systems are further screened and evaluated. After prudently comparing INDOT’s inorganic zinc / vinyl system with the waterborne acrylic system, the moisture cure urethane coating system, and the 3-coat system of zinc-epoxy-urethane, the results show that the new 3-coat system fulfills INDOT’s needs with the most benefits. Therefore, the 3-coat system is recommended to replace INDOT present inorganic zinc / vinyl system. To deal with the problems facing the lead-based paint, a comparison between full-removal and over-coating alternatives is made. Results …
Steel Bridge Protection Policy: Metalization Of Steel Bridges: Research And Practice, Luh M. Chang, Tarek Zayed, Jon D. Fricker
Steel Bridge Protection Policy: Metalization Of Steel Bridges: Research And Practice, Luh M. Chang, Tarek Zayed, Jon D. Fricker
JTRP Technical Reports
The study identifies various painting systems that are successfully used in Indiana’s surrounding states and other industries. The identified systems are further screened and evaluated. After prudently comparing INDOT’s inorganic zinc / vinyl system with the waterborne acrylic system, the moisture cure urethane coating system, and the 3-coat system of zinc-epoxy-urethane, the results show that the new 3-coat system fulfills INDOT’s needs with the most benefits. Therefore, the 3-coat system is recommended to replace INDOT present inorganic zinc / vinyl system. To deal with the problems facing the lead-based paint, a comparison between full-removal and over-coating alternatives is made. Results …
Steel Bridge Protection Policy: Life Cycle Cost Analysis And Maintenance Plan, Jon D. Fricker, Tarek Zayed, Luh M. Chang
Steel Bridge Protection Policy: Life Cycle Cost Analysis And Maintenance Plan, Jon D. Fricker, Tarek Zayed, Luh M. Chang
JTRP Technical Reports
The study identifies various painting systems that are successfully used in Indiana's surrounding states and other industries. the identified systems are further screened and evaluated. After prudently comparing INDOT's inorgainc zinc/vinyl system with the waterborne acrylic system, the moisture cure urethane coating system and the 3-coat system of zinc-epoxy-urethane, the sresults show that thte new 3-coat system fulfills INDOT's needs with the most benefits. Therefore, the 3-coat system is recommended to replace INDOT present inorgaic zinc/vinyl system. To deal with the problems facing the lead-based paint, a comparison between full-removal and over-coating alternatives is made. Results show that over-coating might …
Steel Bridge Protection Policy: Evaluation Of Bridge Coating System For Indot Steel Bridges, Luh M. Chang, Tarek Zayed, Jon D. Fricker
Steel Bridge Protection Policy: Evaluation Of Bridge Coating System For Indot Steel Bridges, Luh M. Chang, Tarek Zayed, Jon D. Fricker
JTRP Technical Reports
The study identifies various painting systems that are successfully used in Indiana’s surrounding states and other industries. The identified systems are further screened and evaluated. After prudently comparing INDOT’s inorganic zinc / vinyl system with the waterborne acrylic system, the moisture cure urethane coating system, and the 3-coat system of zinc-epoxy-urethane, the results show that the new 3-coat system fulfills INDOT’s needs with the most benefits. Therefore, the 3-coat system is recommended to replace INDOT present inorganic zinc / vinyl system. To deal with the problems facing the lead-based paint, a comparison between full-removal and over-coating alternatives is made. Results …
Steel Bridge Protection Policy: Warranty Clauses For Indot Steel Bridge Paint Contracts, Luh M. Chang, Tarek Zayed, Jon D. Fricker
Steel Bridge Protection Policy: Warranty Clauses For Indot Steel Bridge Paint Contracts, Luh M. Chang, Tarek Zayed, Jon D. Fricker
JTRP Technical Reports
The study identifies various painting systems that are successfully used in Indiana’s surrounding states and other industries. The identified systems are further screened and evaluated. After prudently comparing INDOT’s inorganic zinc / vinyl system with the waterborne acrylic system, the moisture cure urethane coating system, and the 3-coat system of zinc-epoxy-urethane, the results show that the new 3-coat system fulfills INDOT’s needs with the most benefits. Therefore, the 3-coat system is recommended to replace INDOT present inorganic zinc / vinyl system. To deal with the problems facing the lead-based paint, a comparison between full-removal and over-coating alternatives is made. Results …
Implementation Of The Developed Quality Acceptance System For Steel Bridge Painting Construction, Luh M. Chang, Machine Hsie
Implementation Of The Developed Quality Acceptance System For Steel Bridge Painting Construction, Luh M. Chang, Machine Hsie
JTRP Technical Reports
The purpose of this research is to implement the steel bridge painting quality acceptance system developed in the Joint Highway Research Project HPR-2029-89-27 and to computerize the developed system into inspectors’ daily practice. A training program was conducted. Field experiment of the developed inspection system was initiated immediately right after the inspector training program. The new acceptance system was manually tested. Feedback from INDOT’s inspectors and other personnel were adopted to refine the inspection system. Meanwhile, an interactive computer graphic program was developed to assist the INDOT in designing the double sampling plan and deciding the sample size with controlled …
Pavement Drainage And Pavement-Shoulder Joint Evaluation And Rehabilitation, Zubair Ahmed, Thomas D. White, Philippe L. Bourdeau
Pavement Drainage And Pavement-Shoulder Joint Evaluation And Rehabilitation, Zubair Ahmed, Thomas D. White, Philippe L. Bourdeau
JTRP Technical Reports
The objectives of this research were i) to evaluate the performance of pavement subdrainage systems ii) study the behavior of moisture conditions below pavements and iii) provide recommendations for unproved drainage criteria based on analysis of field data. Existing and retrofitted subdrainage collector systems were inspected through external visual inspection in combination with a probe for internal inspection. Distresses and deficiencies in construction observed were listed and compiled on video. A methodology for inspection is presented that can be used by highway agencies in monitoring the condition, need for maintenance, and performance of collector systems. Pavements with various types of …
Fatigue Strength And Evaluation Of Sign Structures, Volume 1: Analysis And Evaluation, Xuejun Li, Timothy M. Whalen, Mark D. Bowman
Fatigue Strength And Evaluation Of Sign Structures, Volume 1: Analysis And Evaluation, Xuejun Li, Timothy M. Whalen, Mark D. Bowman
JTRP Technical Reports
This report is a two-volume final report presenting the findings of the research work that was undertaken to evaluate the fatigue behavior of sign structures and, based on that evaluation, to recommend an inspection plan that can be effectively used to detect and minimize possible deterioration due to wind induced loadings of sign structures. The study included a number of signs that are commonly used in Indiana: single-mastarm and double-mastarm cantilever sign structures, box-truss sign structures, tri-chord sign structures, and monotube sign structures. Sign structures with typical dimensions and details were selected as prototypes for each of the various types …