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Next Generation Traffic Signal Performance Measures: Leveraging Connected Vehicle Data, Enrique D. Saldivar-Carranza, Howell Li, Jijo K. Mathew, Jairaj Desai, Tom Platte, Saumabha Gayen, James Sturdevant, Mark Taylor, Charles Fisher, Darcy M. Bullock Jan 2023

Next Generation Traffic Signal Performance Measures: Leveraging Connected Vehicle Data, Enrique D. Saldivar-Carranza, Howell Li, Jijo K. Mathew, Jairaj Desai, Tom Platte, Saumabha Gayen, James Sturdevant, Mark Taylor, Charles Fisher, Darcy M. Bullock

JTRP Affiliated Reports

High-resolution connected vehicle (CV) trajectory and event data has recently become commercially available. With over 500 billion vehicle position records generated each month in the United States, these data sets provide unique opportunities to build on and expand previous advances on traffic signal performance measures and safety evaluation. This report is a synthesis of research focused on the development of CV-based performance measures. A discussion is provided on data requirements, such as acquisition, storage, and access. Subsequently, techniques to reference vehicle trajectories to relevant roadways and movements are presented. This allows for performance analyses that can range from the movement- …

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Creating Informed Learners In The Classroom Facilitator Handbook, Clarence Maybee, Michael Flierl, Rachel Fundator, Catherine Fraser Riehle, Maribeth Slebodnik, Amity Saha Jan 2023

Creating Informed Learners In The Classroom Facilitator Handbook, Clarence Maybee, Michael Flierl, Rachel Fundator, Catherine Fraser Riehle, Maribeth Slebodnik, Amity Saha

Creating Informed Learners in the Classroom Book

No abstract provided.

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Comfort, Contingency, And Writing Center Work: An Essay In Three Illusions, Loren Maria Guay Jan 2023

Comfort, Contingency, And Writing Center Work: An Essay In Three Illusions, Loren Maria Guay

The Writing Center Journal

In this hybrid essay, I engage creatively with the illusory nature of contingent work, presenting three episodes from my personal experiences as a contingent writing program administrator (WPA) during the COVID-19 pandemic. At the same time, I interrogate these experiences by building on past critiques of “comfortable” writing centers, applying Sara Ahmed’s work on the affectiveness of (dis)comfort in order to examine comfort and its uneasy relationship with labor. For whom is the writing center expected to labor to provide comfort? Whose comfort, and moreover whose safety, is jeopardized or made invisible in the process? In answering these questions, this …

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Board 201: A New Public Dataset For Exploring Engineering Longitudinal Development By Leveraging Curricular Analytics, David Reeping, Matthew Ohland, Kenneth Reid, Hossein Ebrahiminejad, Nahal Rashedi Jan 2023

Board 201: A New Public Dataset For Exploring Engineering Longitudinal Development By Leveraging Curricular Analytics, David Reeping, Matthew Ohland, Kenneth Reid, Hossein Ebrahiminejad, Nahal Rashedi

School of Engineering Education Faculty Publications

Considering the increasing demand for engineering graduates, understanding what is limiting students from completing their degrees has been a consistent question posed in the literature. The nontrivial variance in pathways students take in obtaining an engineering degree, especially in cases where students abandon their studies, suggests that longitudinal datasets can hold a wealth of information to uncover factors contributing to attrition. Accordingly, this project uses existing data to explore curricular factors that create barriers for different students by leveraging a new framework for quantifying the impact of such factors, Curricular Analytics. Curricular Analytics uses network analysis to measure sequencing and …

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Contingency And Its Intersections In Writing Centers: An Introduction, Maggie M. Herb, Liliana M. Naydan, Clint Gardner Jan 2023

Contingency And Its Intersections In Writing Centers: An Introduction, Maggie M. Herb, Liliana M. Naydan, Clint Gardner

The Writing Center Journal

Introduction to WCJ 41.1, which is a special issue on contingency in writing centers.

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The Paradoxes Of Contingency: Stories Of Contingent Professional Tutors’ Lived Experiences, Beth Sabo, Kaia-Marie A. Bishop, Kristine M. Gatchel, Rachel Dick Jan 2023

The Paradoxes Of Contingency: Stories Of Contingent Professional Tutors’ Lived Experiences, Beth Sabo, Kaia-Marie A. Bishop, Kristine M. Gatchel, Rachel Dick

The Writing Center Journal

Despite comprising the majority of labor in higher education in general and writing centers more specifically, contingent workers’ voices and experiences have often been overlooked. The contingent voices that have been represented have predominantly been those in director or administrative positions, not the professional tutors who engage in centers’ day-to-day consulting. This lack of representation in the literature perpetuates institutional inequities and belies a larger paradox: that contingent workers attempting to ameliorate the precarity of their situation may jeopardize their livelihood. Because contingent workers’ identities and roles have historically been ignored and marginalized, few research and publication options are available …

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Writing Tutor Alumni Takeaways: Pros And Cons Of Contingency, Glenn Hutchinson, Xuan Jiang, Mario Avalos Jan 2023

Writing Tutor Alumni Takeaways: Pros And Cons Of Contingency, Glenn Hutchinson, Xuan Jiang, Mario Avalos

The Writing Center Journal

This essay aims to build upon the Peer Writing Tutor Alumni Research Project (PWTARP), designed by Bradley Hughes, Paula Gillespie, and Harvey Kail (2010), which focuses on what tutors learn about themselves as writers and students. However, the PWTARP survey, like much of writing center scholarship, focuses on student workers attending PWIs (Predominately White Institutions). To help fill the diversity gap in the existing literature, the current study uses the PWTARP survey as a frame of reference to investigate what tutors learned about themselves as writers and students at a Hispanic-Serving Institution (HSI). Based on feedback from a team of …

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Doing More With Barely Enough: Narratives Of An Undergraduate Tutor Researcher And Mentor, Andrea Rosso Efthymiou, Santiago Zea Jan 2023

Doing More With Barely Enough: Narratives Of An Undergraduate Tutor Researcher And Mentor, Andrea Rosso Efthymiou, Santiago Zea

The Writing Center Journal

We expand the field’s focus on contingent labor to include part-time student employees’ experiences in addition to the experiences of part-time and contingent faculty. This article uses autoethnography and diary studies as frameworks for understanding the experiences of undergraduate tutor labor, particularly as it involves undergraduate research. Further, we show how a faculty mentor and writing center director’s view of a student tutor’s contingency can lead to revised approaches in writing center administration.

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A Strategic Assessment Of Needs And Opportunities For The Wider Adoption Of Electric Vehicles In Indiana, Ha Kyun Ju, Tae Rim Kim, Kyubyung Kang, Dan Daehyun Koo, Konstantina Gkritza, Samuel Labi Jan 2023

A Strategic Assessment Of Needs And Opportunities For The Wider Adoption Of Electric Vehicles In Indiana, Ha Kyun Ju, Tae Rim Kim, Kyubyung Kang, Dan Daehyun Koo, Konstantina Gkritza, Samuel Labi

JTRP Technical Reports

INDOT plans to invest nearly $100 million to build a statewide electric vehicle (EV) charging network as part of the National Electric Vehicle Infrastructure Formula Program. SPR-4509 Phase-I identified energy EV charging deserts in Indiana for long-distance trips. SPR-4509 Phase-II further examines the charging stations' impact on EV long-distance trips in Indiana. Using an agent-based simulation model, the number of charges, vehicle miles traveled, energy used during the trip, and energy used during charging were estimated for nine different cases. High EV daily charging demand areas in Indiana were shown in ArcGIS based on multiple scenarios of different charging station …

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Determining Optimal Traffic Opening Time Through Concrete Strength Monitoring: Wireless Sensing, Zhihao Kong, Na Lu Jan 2023

Determining Optimal Traffic Opening Time Through Concrete Strength Monitoring: Wireless Sensing, Zhihao Kong, Na Lu

JTRP Technical Reports

Construction and concrete production are time-sensitive and fast-paced; as such, it is crucial to monitor the in-place strength development of concrete structures in real-time. Existing concrete strength testing methods, such as the traditional hydraulic compression method specified by ASTM C 39 and the maturity method specified by ASTM C 1074, are labor-intensive, time consuming, and difficult to implement in the field. INDOT’s previous research (SPR-4210) on the electromechanical impedance (EMI) technique has established its feasibility for monitoring in-situ concrete strength to determine the optimal traffic opening time. However, limitations of the data acquisition and communication systems have significantly hindered the …

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Developing Customized Nrcs Unit Hydrographs (Finley Uhs) For Ungauged Watersheds In Indiana, Tao Huang, Venkatesh Merwade Jan 2023

Developing Customized Nrcs Unit Hydrographs (Finley Uhs) For Ungauged Watersheds In Indiana, Tao Huang, Venkatesh Merwade

JTRP Technical Reports

The Natural Resources Conservation Service (NRCS, formerly the Soil Conservation Service, SCS) unit hydrograph (UH) is one of the most commonly used synthetic UH methods for hydrologic modeling and engineering design all over the world. However, previous studies have shown that the application of the NRCS UH method for some ungauged watersheds in the state of Indiana produced unrealistic flood predictions for both the peak discharge and the time to peak. The objective of this work is to customize the NRCS UH by analyzing the role of its two key parameters, namely, the peak rate factor (PRF) and …

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Implementing Epoxy Injection In Concrete Overlaid Bridge Decks, Prince Baah Jan 2023

Implementing Epoxy Injection In Concrete Overlaid Bridge Decks, Prince Baah

JTRP Technical Reports

Concrete overlays have proven to be an effective maintenance treatment as they slow de-icing chemical and water penetration into the original deck surface. Typically, due to vibration, structural flexibility, and weak bond between the concrete overlay and deck concrete potentially due to poor construction, de-bonding develops at the boundary between the original deck and overlay. This de-bonding creates voids, providing reservoir for chloride laden water to fill after it penetrates cracks in the surface. Displacing this liquid solution and filling these cracks with epoxy helps reduce freeze/thaw cycling and reduces spalling. The epoxy material protects the bridge deck from moisture …

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Gis-Based Geotechnical Database For Collaborative Gis, Rameez Ali Raja, Vidushi Toshniwal, Rodrigo Salgado Jan 2023

Gis-Based Geotechnical Database For Collaborative Gis, Rameez Ali Raja, Vidushi Toshniwal, Rodrigo Salgado

JTRP Technical Reports

INDOT spends at least 8 million dollars annually on geotechnical site investigations, not including the amounts spent by contractors. The laborious and costly job of data collection in geotechnical practice requires the efficient storing and organizing of this valuable data to develop correlations and trends in spatially varying geotechnical data. INDOT currently uses gINT software for managing geotechnical data and ArcGIS for storing boring logs and geotechnical reports. The INDOT geotechnical office is pursuing means to improve the efficiency of their operations by developing a GIS-based geotechnical database for secure storage, easy retrieval, and flexible sharing of geotechnical data to …

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Synthesis Study On Employing Snowplow Driving Simulators In Training, Luciana Debs, Yanchao Zheng, Jesutoba Ademiloye, Yunfeng Chen, Jiansong Zhang Jan 2023

Synthesis Study On Employing Snowplow Driving Simulators In Training, Luciana Debs, Yanchao Zheng, Jesutoba Ademiloye, Yunfeng Chen, Jiansong Zhang

JTRP Technical Reports

Departments of Transportation (DOTs) need to mobilize workers under harsh weather conditions for winter operations. Traditional snowplow driver training at INDOT is usually conducted annually before the snow season; therefore, it does not replicate the conditions which drivers will be exposed to during winter operations. To this point, some state DOTs have incorporated simulators in their snowplow driver training. Despite this raised interest, few studies have (1) surveyed other state DOTs about the use of this equipment in winter operations driver training, or (2) provided a systematic consideration of all factors involved in the decision to use driving simulators in …

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Predictive Analytics For Quantifying The Long-Term Costs Of Defects During Bridge Construction, Nichole Marie Criner, Manuel Salmeron, Xin Zhang, Shirley J. Dyke, Julio A. Ramirez, Benjamin Eric Wogen Jan 2023

Predictive Analytics For Quantifying The Long-Term Costs Of Defects During Bridge Construction, Nichole Marie Criner, Manuel Salmeron, Xin Zhang, Shirley J. Dyke, Julio A. Ramirez, Benjamin Eric Wogen

JTRP Technical Reports

During the lifecycle of a bridge, deterioration of the concrete deck originates from many sources, e.g., corrosion due to water infiltration in conjunction with chlorides from the use of de-icing salts. Such deterioration may be affected by any one of the following six actions relevant to a bridge from conception to demolition: design, construction, in-service conditions, maintenance, repair and rehabilitation, and replacement. Many researchers have studied the relationships between these sources and their consequences. However, the relationship between construction defects and inspection practices, and its impact on the deterioration process has not yet been identified. This project focuses on the …

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Speed Management On Freeways In Transition Zones Between Rural And Urban Conditions, Raul A. Pineda-Mendez, Xueqian Shi, Andrew P. Tarko, Mario A. Romero Jan 2023

Speed Management On Freeways In Transition Zones Between Rural And Urban Conditions, Raul A. Pineda-Mendez, Xueqian Shi, Andrew P. Tarko, Mario A. Romero

JTRP Technical Reports

Drivers’ noncompliance with the posted speed limit reductions on rural-to-urban freeway transition zones is a recurrent problem in Indiana and other states. Speed-reduction treatments, such as pavement markings and active signing, aim to solve this issue. Optical speed bars, longitudinal speed reduction markings, and speed feedback signs were identified as the most promising speed-reduction treatments for experimental implementation in Indiana. Probe-vehicle-based speed data for 1 year was acquired on selected freeway segments to measure the speed effect. A set of fixed-effects linear regression models were used to estimate the effect of speed-reduction treatments on three key speed behavior characteristics—average speed, …

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Applied Ergonomics, Xingzhou Guo, Yunfeng Chen, Jiansong Zhang Jan 2023

Applied Ergonomics, Xingzhou Guo, Yunfeng Chen, Jiansong Zhang

JTRP Technical Reports

The ergonomic injuries and solutions have been extensively studied in the construction industry; however, the prevalence of work-related injuries, risky activities, and effective solutions in the transportation industry are not understood. This study aims to explore the prevalence of work-related injuries, risky activities, and potentially ergonomic solutions among transportation workers. The approach to this study included exploration of worker type, injury types, and activities of top concern through historical injury data and an online survey, and proposal and evaluation of ergonomic solutions through onsite observations and field experiments. Results from this study found that back injuries were the most common …

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Development Of A Multiple Water Course Joint Probability Analysis Procedure For Indiana Watersheds, Ankit Ghanghas, Sayan Dey, Venkatesh Merwade Jan 2023

Development Of A Multiple Water Course Joint Probability Analysis Procedure For Indiana Watersheds, Ankit Ghanghas, Sayan Dey, Venkatesh Merwade

JTRP Technical Reports

The design of hydraulic structures located near a confluence of two streams must take into consideration the flows from both of the streams. A hydraulic structure located on a small tributary that drains into a large river immediately downstream is not just affected by the flow in the tributary, but also by the backwater flow from the downstream river. Currently INDOT uses a tabular summary (Table 1.1 and Table 7.3 in the HEC-22 manual) of joint probabilities of coincident flows in designing hydraulic structures at confluences. However, the source of the table is unknown, and the tabular summary provides coincidental …

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Crowdsourcing/Winter Operations Dashboard Upgrade, Justin A. Mahlberg, Jairaj Desai, Haydn Malackowski, Howell Li, Jijo K. Mathew, Rahul Suryakant Sakhare, Timothy Wells, Darcy M. Bullock Jan 2023

Crowdsourcing/Winter Operations Dashboard Upgrade, Justin A. Mahlberg, Jairaj Desai, Haydn Malackowski, Howell Li, Jijo K. Mathew, Rahul Suryakant Sakhare, Timothy Wells, Darcy M. Bullock

JTRP Technical Reports

INDOT has recently completed the deployment of Parsons telematics-based dash-cameras, automatic vehicle locator (AVL) positions, and spreader rate monitoring across their winter operations fleet. The motivation of this study was to develop dashboards that integrate connected vehicle data into the real-time monitoring and after-action review of winter storms. Each month approximately 13 billion connected vehicle records are ingested for the state of Indiana and almost 99 billion weather data records are ingested nationwide in 15-minute intervals. This study developed techniques to utilize this connected vehicle data and weather data to monitor real-time mobility of interstates and post storm after-action assessments …

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Implementation Of Enhanced Probe Data (Canbus) For Tactical Workzone And Winter Operations Management, Jairaj Desai, Rahul Suryakant Sakhare, Justin Mahlberg, Jijo K. Mathew, Howell Li, Darcy M. Bullock Jan 2023

Implementation Of Enhanced Probe Data (Canbus) For Tactical Workzone And Winter Operations Management, Jairaj Desai, Rahul Suryakant Sakhare, Justin Mahlberg, Jijo K. Mathew, Howell Li, Darcy M. Bullock

JTRP Technical Reports

For over a decade, segment-based probe data has been extensively used by transportation stakeholders for monitoring mobility on Indiana roadways. However, enhanced probe data from connected vehicles includes a richer dataset that can provide more detailed real-time and after-action reviews. This enhanced data includes detailed vehicle trajectories, at 3s resolution, and “event data.” This event data is near real-time and includes hard-braking events, hard-acceleration events, weather-related data, including wiper activations and some seat belt usage data. This project developed a set of methodologies and resulting visualizations that enables the use of emerging connected vehicle data in operational decision-making on work …

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Effectiveness Of Contrast Markings On Roadways And Orange Markings In Work Zones, Michael Williamson, Ping Lin Jan 2023

Effectiveness Of Contrast Markings On Roadways And Orange Markings In Work Zones, Michael Williamson, Ping Lin

JTRP Technical Reports

Lane departure crashes are a leading cause of fatalities and injury crashes on roadways. To solve this problem, innovative marking in the form of contrasted white on concrete sections and orange marking in work zones were evaluated for their safety benefits. A highway safety manual approach was taken to evaluate the crash reduction benefits from each marking design. Orange marking in work zones were also evaluated for their speed, lane keeping, and lane choice effects. A survey of drivers was conducted on orange markings to ascertain public opinion, the survey indicated the potential for wide public acceptance of the new …

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Bim Standards For Roads And Related Transportation Assets, Hang Li, Hosam Hegazy, Xiaorui Xue, Jiansong Zhang, Yunfeng Chen Jan 2023

Bim Standards For Roads And Related Transportation Assets, Hang Li, Hosam Hegazy, Xiaorui Xue, Jiansong Zhang, Yunfeng Chen

JTRP Technical Reports

With the industry foundation classes (IFC) building information modeling (BIM) standard (ISO 16739) being adopted by AASHTO as the national standard for modeling bridge and road infrastructure projects, there comes a great opportunity to upgrade the INDOT model development standard of roads and related assets to 2D+3D BIM. This upgrade complies with the national standard and creates a solid foundation for preserving accurate asset information for lifecycle data needs. This study reviewed the current modeling standards for drainage and pavement at different state DOTs and investigated the interoperability between state-of-the-art design modeling software and IFC. It was found that while …

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Indot Research Program Benefit Cost Analysis—Return On Investment For Projects Completed In Fy 2022, Bob Mccullouch Jan 2023

Indot Research Program Benefit Cost Analysis—Return On Investment For Projects Completed In Fy 2022, Bob Mccullouch

JTRP Technical Reports

To demonstrate the value of research and its implementation, the Governor’s Office initially requested an annual financial analysis of the INDOT Research Program to determine the return on the research investment (ROI). The INDOT Research & Development (R&D) has continued to publish an annual Return on Investment report. The current financial analysis is for research projects that completed in FY 2022. Analyses on previous year’s projects is necessary primarily due to the time it takes some project outcomes to be implemented and verifiable data generated, extending into the following year. Therefore, the FY 2023 analysis is completed research projects in …

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Guidelines For Evaluating Safety Using Traffic Encounters: Proactive Crash Estimation On Roadways With Conventional And Autonomous Vehicle Scenarios, Andrew P. Tarko, Mario A. Romero, Vamsi Krishna Bandaru, Xueqian Shi Jan 2023

Guidelines For Evaluating Safety Using Traffic Encounters: Proactive Crash Estimation On Roadways With Conventional And Autonomous Vehicle Scenarios, Andrew P. Tarko, Mario A. Romero, Vamsi Krishna Bandaru, Xueqian Shi

JTRP Technical Reports

With the expected arrival of autonomous vehicles, and the ever-increasing levels of automation in today’s human driven vehicles, road safety is changing at a rapid pace. This project aimed to address the need for an efficient and rapid method of safety evaluation and countermeasure identification via traffic encounters, specifically traffic conflicts that are considered useful surrogates of crashes. Recent research-delivered methods for estimating crash frequencies based on these events were observed in the field. In this project we developed a method for observing traffic encounters with two LiDAR-based traffic monitoring units, called TScan, which were recently developed in JTRP-funded projects …

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Speed Enforcement In Work Zones And Synthesis On Cost-Benefit Assessment Of Installing Speed Enforcement Cameras On Indot Road Network, Jijo K. Mathew, Jairaj C. Desai, Howell Li, Darcy M. Bullock Jan 2023

Speed Enforcement In Work Zones And Synthesis On Cost-Benefit Assessment Of Installing Speed Enforcement Cameras On Indot Road Network, Jijo K. Mathew, Jairaj C. Desai, Howell Li, Darcy M. Bullock

JTRP Technical Reports

Work zone safety is a high priority for transportation agencies across the United States. High speeds in construction zones are a well-documented risk factor that increases the frequency and severity of crashes. It is therefore important to understand the extent and severity of high-speed vehicles in and around construction work zones. This study uses CV trajectory data to evaluate the impact of several work zone speed compliance measures, such as posted speed limit signs, radar-based speed feedback displays, and automated speed enforcement on controlling speeds inside the work zone. This study also presents several methodologies to characterize both the spatial …

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Determining Asphalt Mixture Properties Using Imaging Techniques, Mohammad Ali Notani, Behnam Jahangiri, Reyhaneh Rahbar-Rastegar, John E. Haddock Jan 2023

Determining Asphalt Mixture Properties Using Imaging Techniques, Mohammad Ali Notani, Behnam Jahangiri, Reyhaneh Rahbar-Rastegar, John E. Haddock

JTRP Technical Reports

This study introduces imaging technology to determine the bulk specific gravity (Gmb) of compacted asphalt mixture specimens. Using an advanced three-dimensional scanner, a fast, accurate technique for determining compacted asphalt mixture specimen Gmb was developed. The feasibility of this technique was evaluated by testing a collection of asphalt mixtures, including dense-graded and stone mastic asphalt mixtures. The results were compared with those obtained using the currently-specified Gmb measurement methods of AASHTO T166 and CoreLok. The proposed scanning technique was also used for both laboratory-prepared and field-cored specimens to determine its reliability and reproducibility. The study results …

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Salt Monitoring And Reporting Technology (Smart) For Salt Stockpile Inventory Reporting, Justin A. Mahlberg, Raja Manish, Yerassyl Koshan, Mina Joseph, Jidong Liu, Haydn A. Malackowski, Zechariah Deloach, Timothy Wells, Jeremy Mcguffey, Ayman Habib, Darcy M. Bullock Jan 2023

Salt Monitoring And Reporting Technology (Smart) For Salt Stockpile Inventory Reporting, Justin A. Mahlberg, Raja Manish, Yerassyl Koshan, Mina Joseph, Jidong Liu, Haydn A. Malackowski, Zechariah Deloach, Timothy Wells, Jeremy Mcguffey, Ayman Habib, Darcy M. Bullock

JTRP Technical Reports

Transportation agencies in northern environments spend a considerable amount of their budget on salt for winter operations. For example, in the state of Indiana, there are approximately 120 salt storage facilities distributed throughout the state and the state expends between 30 M USD and 60 M USD on inventory and delivery each year. Historical techniques of relying on visual estimates of salt stockpiles can be inaccurate and unhelpful for managing the supply chain during the winter or planning for re-supply during the summer months. This project report describes the implementation of a portable and permanent LiDAR system that can be …

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Shear And Bearing Capacity Of Corroded Steel Beam Bridges And The Effects On Load Rating, Deven Kanakamedala, Jungil Seo, Amit H. Varma, Robert J. Connor, Anna Tarasova Jan 2023

Shear And Bearing Capacity Of Corroded Steel Beam Bridges And The Effects On Load Rating, Deven Kanakamedala, Jungil Seo, Amit H. Varma, Robert J. Connor, Anna Tarasova

JTRP Technical Reports

Corrosion in the girders of steel girder bridges often occurs due to the deicing salts, water, and other debris that leak through the deck joints into the web and bottom flange at the girder ends. Corrosion causes loss of cross-sectional area leading to a reduction in section properties of the member, which eventually results in a reduction in structural resistance against shear and bearing. In this study, seven full-scale tests were performed on decommissioned steel girders acquired from bridges scheduled for demolition in Indiana. Two of the four girders had severe corrosion with cracks and holes in the bottom of …

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Assessment Of Pipe Fill Heights, Luz María Agudelo Urrego, Chatuphat Savigamin, Devansh Gandhi, Ghadir Haikal, Antonio Bobet Jan 2023

Assessment Of Pipe Fill Heights, Luz María Agudelo Urrego, Chatuphat Savigamin, Devansh Gandhi, Ghadir Haikal, Antonio Bobet

JTRP Technical Reports

The design of buried pipes, in terms of the allowable minimum and maximum cover heights, requires the use of both geotechnical and structural design procedures. The geotechnical procedure focuses on estimating the load on the pipe and the compressibility of the foundation soil. The focus of the structural design is choosing the correct cross-section details of the pipe under consideration. The uncertainties of the input parameters and installation procedures are significant. Because of that, the Load Resistance Factor Design (LRFD) method is considered to be suitable for the design of buried pipes. Furthermore, the interaction between the pipe structure and …

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Development Of Indot’S Verification Program To Implement The Iri Smoothness Specification For Newly Constructed Pavements, Dwayne Harris Jan 2023

Development Of Indot’S Verification Program To Implement The Iri Smoothness Specification For Newly Constructed Pavements, Dwayne Harris

JTRP Technical Reports

The Indiana Department of Transportation is implementing an IRI pavement smoothness specification for newly constructed pavements. The pavement specification is based on the results of SPR-3300. FHWA requires a verification program as part of the implementation of the new smoothness specification, because the INDOT specification assigns the collection of the pavement smoothness quality assurance data on newly constructed pavements to the contractors. The objective of this research was to develop a verification program for the smoothness quality assurance of newly constructed pavements for the new IRI based specification. The research deliverable is the details of the verification program developed to …

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