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Continuous prestressed concrete girder bridges. Volume 1, Literature review and preliminary designs

Description: "The Texas Department of Transportation (TxDOT) is currently designing typical highway bridge structures as simply supported using standard precast, pretension-ed girders. TxDOT is interested in developing additional economical design alternatives for longer span bridges, through the use of the continuous precast, pretension-ed concrete bridge structures that use spliced girder technology. The objectives of this portion of the study are to evaluate the current stat-of-the-art and practice relev… more
Date: October 2011
Creator: Mander, John B.; Parkar, Anagha S. & Hueste, Mary Beth D.
Partner: UNT Libraries Government Documents Department

Impacts of energy developments on the Texas Transportation System infrastructure

Description: "Texas energy sector has a critical impact-historically and currently-on both the state economy and the Texas transportation system. The stat's various transportation modes, including rail, highways, pipelines, and ports, form a system that supports the energy sector in a number of ways."
Date: October 2011
Creator: Prozzi, Jolanda; Grebenschikov, Sergey; Banerjee, Ambarish & Prozzi, Jorge Alberto
Partner: UNT Libraries Government Documents Department

Laboratory Evaluation of Constructibility Issues with Surface Treatment Binder

Description: This report discusses a study related to the use of emulsified asphalt (EA) as a binder for sealing roads after construction. Due to the number complex variables that affect EAs, this research is meant to help TxDOT personnel better predict which EA will be most effective and bond most quickly to allow roads to open for traffic.
Date: October 2011
Creator: Senadheera, Sanjaya Priyantha, 1959-; Prozzi, Jorge Alberto; Smit, Andre; Bannerjee, Ambarish; Tubb, Andrew & Niu, Lei
Partner: UNT Libraries Government Documents Department

An Assessment and Framework of Management Science Applications for TxDOT

Description: Report discussing the results of a project in which researchers implemented a systematic approach to identify the domains within the Texas Department of Transportation (TxDot) where Operations Research and Management Science (OR/MS) techniques could lead to substantial improvements.
Date: October 2011
Creator: Waller, S. Travis; Walewski, John; Chang, Carlos; Fajardo, David; Lasdon, Leon; Montes, Edith et al.
Partner: UNT Libraries Government Documents Department

Traffic Operations and Safety Benefits of Active Traffic Strategies on TxDOT Freeways

Description: Report discussing a project, which developed a series of interdependent models and a simulation framework to evaluate the traffic operations and safety benefits of ATM strategies. Four ATM scenarios were evaluated in this study: variable speed limits (VSL), peak-period shoulder use, VSL and shoulder use, and ramp metering.
Date: October 2011
Creator: Nezamuddin, N.; Jiang, Nan (Writer on transportation); Zhang, Ti; Waller, S. Travis & Sun, Dazhi
Partner: UNT Libraries Government Documents Department

Evaluation, presentation and repair of microbial acid-produced attack of concrete

Description: This report evaluates the severity of the deterioration in bridges to determine if microbial induced deterioration (MID) is a significant contributor by visual inspection and a number of tests on twelve selected columns. This report also evaluates the effectiveness of suggested test procedures on identifying microbial attack on concrete and the integrity of deteriorated concrete due to the attack.
Date: October 2011
Creator: Hu, Jiong; Hahn, Dittmar; Rudzinski, Walter; Wang, Zhuo & Estrada, Luzelva
Partner: UNT Libraries Government Documents Department

CAM Mix Design With Local Aggregates

Description: "This study provides revised mix design recommendations for crack attenuating mixtures (CAM) with local aggregates. The use of lower quality aggregates is cost beneficial but limits the application of these mixes in terms of reduced performance. Aggregate guidelines and aggregate quality criteria are provided to enhance the rutting and cracking performance of these mixes. The mix design recommendations as well as aggregate guidelines and quality criteria provided in the report are based on la… more
Date: October 2011
Creator: Smit, Andrè de Fortier; Prasad, Sivaram; Prozzi, Jorge Alberto & Tahmoressi, Maghsoud
Partner: UNT Libraries Government Documents Department

School Traffic Workshop: Dealing With Texas-Sized Problems Around Schools

Description: "This report summarized the series of "Traffic around Schools"" workshops conducted throughout the state of Texas to familiarize TxDOT employees and partner agencies with two key products from previous research projects (0-4286 and 0-5470) and other tools and guidance that are available for dealing with problems around schools."
Date: October 2011
Creator: Brewer, Marcus A.; Fitzpatrick, Kay & Cooner, Scott A.
Partner: UNT Libraries Government Documents Department

Equipment Replacement Optimization

Description: "The objective of the Texas Department of Transportation (TxDOT) Research Project 7-4941 is to; determine the best optimization methodology; evaluate commercial fleet management systems; develop the model if this cost-effective relative to purchasing a commercial model; and validate the new model as needed using data available on TxDOT's current fleet."
Date: October 2011
Creator: Fan, Wei; Brown, Leonard; Patterson, Casey; Winkler, Mike; Schminkey, Justin; Western, Kevin et al.
Partner: UNT Libraries Government Documents Department

Studies to determine the effectiveness of automated flagger assistance devices and school crossing devices

Description: "This report describes the methodology and results of analyses performed to determine motorist understanding, as well as the operational and safety effectiveness, of automated flaggers assistance devices (AFADs) relative to the use of flaggers at lane closures on two-lane, two-way roadways."
Date: October 2011
Creator: Finley, Melisa D.; Ullman, Brooke R.; Trout, Nada D. & Park, Eun Sug
Partner: UNT Libraries Government Documents Department

Implementing a project and portfolio management system for TxDOT project development

Description: "Beginning in the summer of 1999, Texas Department of Transportation (TxDOT) started developing the framework for implementing a sophisticated new system to manage its large and diverse portfolio of projects during their development phase. This was followed by the implementation itself for managing project schedules, project and portfolio resources and costs during their development cycle. This unique and challenging implementation across TxDOT encompassed all functional areas involved in the p… more
Date: October 2011
Creator: Khwaja, Nabeel
Partner: UNT Libraries Government Documents Department

Developing a mixture design specification for flexible base construction

Description: "In the Texas Department of Transportation (TxDOT), flexible base producers typically generate large stockpiles of material exclusively for TxDOT projects. This large "state-only" inventory often maintained by producers, along with time requirements for testing and reduced manpower within TxDOT offices, resulted in this project's investigation into a mixture-design specification for flexible base. The goals of this project are to develop a flexible base specification that reduces TxDOT's burden… more
Date: October 2011
Creator: Epps, Jon A.; Sebesta, Stephen; Sahin, Hakan; Button, Joe; Luo, Rong & Lytton, Robert
Partner: UNT Libraries Government Documents Department

Characterization of Exhaust Emissions From Heavy-Duty Diesel Vehicles in the Houston-Galveston-Brazoria Area

Description: "For this study, a total of 30 heavy-duty diesel vehicles (HDDVs) were selected from City of Houston (COH) fleet based on opacity testing for HEs and random selection for non-HEs. With the selected 30 vehicles, driving and idling emission testing were performed to characterize their emissions with respect to vehicle classes, types (HE or non-HE), and model years."
Date: October 2011
Creator: Johnson, Jeremy D.; Lee, Doh-Won; Farzaneh, Reza; Zietsman, Josias & Yu, Lei
Partner: UNT Libraries Government Documents Department

Sea Center Texas Self-Gudied Tour

Description: This document provides information about the exhibits, special events, and programs offered by the Sea Center Texas.
Date: October 2011
Creator: Sea Center Texas
Partner: UNT Libraries Government Documents Department

Unclaimed Property Reporting Instructions, 2011

Description: The General Information chapter gives an overview of unclaimed property reporting. The Property Specific Reporting chapter discusses, in detail, some of the more common types of unclaimed property. The Preparing Your Report chapter gives step-by-step instructions for completing the property report and includes sample forms and instructions. The last Chapter of the manual contains Reference Tales that will be helpful when preparing your reports. On the last page, you will find a quick reference… more
Date: October 2011
Creator: Texas. Comptroller's Office.
Partner: UNT Libraries Government Documents Department

Rates of Channel Migration on the Brazos River: Final Report

Description: "For this project four (4) tasks were developed and agreed to by the Texas Water Development Board (TWDB) contract person and the investigators. The four tasks are: (1) Calculate rates of channel migration along selected reaches (2) Categorize channel banks for erosion occurrence/potential (3) Develop estimated sediment budget for selected reaches (4) Determine and classify behavior of channel movement"
Date: October 2011
Creator: Giardino, John R. & Lee, Adam A.
Partner: UNT Libraries Government Documents Department

Best Practice for Using RAS in HMA

Description: "The use of recycles asphalt shingles (RAS) in hot-mix asphalt (HMA) mixtures has the potential to significantly reduce the cost of asphalt paving mixes while conserving energy and preserving the environment. This report documents the best practices for the use of RAS in HMA in terms of Ras processing, characterizing the processed RAS (binder content,gradations, and performance grad [PG]), RAS mix design, production, and field construction."
Date: October 2011
Creator: Zhou, Fujie; Button, Joe W. & Epps, Jon
Partner: UNT Libraries Government Documents Department

[TXSSAR Officer Reports: October 29 - 30, 2011]

Description: Officer Reports for the Texas Society, Sons of the Revolution, compiled October 29 - 30, 2011.
Date: 2011-10-29/2011-10-30
Creator: Texas Society Sons of the American Revolution
Partner: UNT Libraries Special Collections

Municipal Solid Waste in Texas: A Year in Review, 2010

Description: Annual report summarizing data on waste disposed in municipal solid waste landfills and processed in non-landfills throughout the state of Texas during fiscal year 2010, as well as an estimate of remaining landfill capacities.
Date: October 2011
Creator: Texas Commission on Environmental Quality. Waste Permits Division.
Partner: UNT Libraries Government Documents Department

Enrollment in Texas Public Schools: 2010-2011

Description: Abstract: This report provides information on enrollment in the Texas public school system from the 2001-02 through 2010-11 school years, based on data collected through the Texas Public Education Information Management System. Enrollment data are provided by grade, race/ethnicity, gender, and economically disadvantaged status, and for special populations and instructional programs. Data also are reported by education service center region (p. ii).
Date: October 2011
Creator: Texas Education Agency. Division of Accountability Research.
Partner: UNT Libraries Government Documents Department

City Mixed Beverage Comparison Summary: Third Quarter 2011

Description: Quarterly report outlining tax revenues and remittances for alcoholic beverages, listed by city for July-September 2011. It also compares the statistics to the same period for the previous year.
Date: October 2011
Creator: Texas. Comptroller's Office.
Partner: UNT Libraries Government Documents Department
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