Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 37 for “"VDOT"”.
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Physical and Chemical Soil Properties of Ten Virginia Department of Transportation (VDOT) Mitigation Wetlands
… 1998, the Virginia Department of Transportation (VDOT) adopted standards for soil handling and amendments to improve created non-tidal wetland soil conditions. This study was conducted in sites where these new reconstruction practices were supposedly being implemented. Specific objectives were (i) …
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Evaluating the Cost-Effectiveness of Tuberculosis Video Directly Observed Therapy Program at Harris County Public Health & Environmental Services
… in the Video Directly Observed Therapy (VDOT), patients record and submit a video clip as evidence of medication adherence through a mobile device, which is then reviewed by the healthcare worker. A few pilot studies have demonstrated the feasibility and effectiveness of VDOT. However, …
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Comparative Analysis of Current Performance-Based Maintenance Methods to Improve Virginia Highways
… compare and analyze agency timelines (i.e., VDOT to others). Timelines included major milestones at each agency; milestones which enabled innovation in the field of performance-based contracting. The purpose of comparing VDOT to other agencies was to provide VDOT with industry best practices …
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Development of Performance Warranties for Performance Based Road Maintenance Contracts
… 2003.) Virginia Department of Transportation (VDOT) has been one of the first state agencies that took the initiative of using a performance based contract for the maintenance of a portion of its interstate highway system. This initiative resulted in the establishment of the 'Comprehensive …
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Short-term Comparison of Frictional Properties of Superpave and Balance Mix Design Hot Mix Asphalt Mixes
… not. The Virginia Department of Transportation (VDOT) aims to implement the Balance Mix Design by 2023. The objective of this thesis is to evaluate the initial frictional properties of mixes designed using the Balanced Mix Design method to verify that safety is not compromised to support the …
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Management information system infrastructure for a proposed highway management system for the Virginia Department of Transportation
… the development of a System Dynamics model for VDOT’s Highway Management System and the Interface between the two. Specifics include identifying the detailed source for each parameter or developing recommendations for future data collections. The MIS is to be in both a hard (paper) and a soft …
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Live Load Testing of Appalachia, Va Concrete Arch Bridges for Load Rating Recommendation
… by Virginia Department of Transportation (VDOT). Both bridges have supported an increasing amount of extreme coal truck traffic throughout their service life and are essential to the efficient transport of coal in the region. Because of their age, having been built in 1929, and the amount …
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Roadside Ditch Design and Erosion Control on Virginia Highways
… the Virginia Transportation Research Council, VDOT has sponsored this research to investigate the state of design practice for these structures and to explore revisions to the design process resulting in a more economical design. To investigate the erosion problems, various VDOT personnel at …
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A geometric programming based procedure to design bridge superstructures
… and the Virginia Department of Transportation (VDOT). A primal based algorithm is used in which, the resulting optimization problems are transformed to the solution of a series of Linear Programming problems that are easy to solve. A computer implementation of the algorithm is also developed. …
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Development of Concrete Shrinkage Performance Specifications
… by the Virginia Department of Transportation (VDOT) were assessed. Five existing shrinkage prediction models were also assessed to determine the accuracy and precision of each model as it pertains to the VDOT mixtures used in this study. The five models assessed were the ACI 209 Code Model, …
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District Level Preventive Maintenance Treatment Selection Tool for Use in Virginia
… pavement condition data was obtained from the VDOT PMS for these treatments and treatment performance models were developed. A district level treatment selection tool was developed to assist the district level decision making process. A prioritized list of pavement sections was generated, …
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The Framework of a Multi-Level Database of Highway Construction Performance Times
… date, the Virginia Department of Transportation (VDOT) does not have an established method. One major portion of this work is the development of the framework for a multi-level time estimating system to aid in the establishment of contract performance times. This system parallels the VDOT cost …
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Evaluation of SiteManager as a Tool to Collect Performance Time Data
… the construction documentation system used by VDOT, as a tool for collecting the daily installed quantity and active crew days necessary to populate the operations level of the database. This evaluation first sought to determine if SiteManager was a feasible option for collecting performance …
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Network Level Decision-Making Using Pavement Structural Condition Information From The Traffic Speed Deflectometer
… treatment selection process currently used by VDOT. Application of the augmented matrix on the tested Interstate network resulted in reducing the percentage of the network requiring CM and increasing the percentage requiring PM and RM. The second part of the study investigated the possibility …
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A Discrete Optimization Approach to Solve a Reader Location Problem for Estimating Travel Times
… flow. The Virginia Department of Transportation (VDOT) currently operates a number of surveillance technologies. Of particular interest to us are Automatic Vehicle Identification (AVI) tag readers to assimilate travel time information. One of VDOT's latest research thrusts has been to develop …
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Quality Assurance for Chip Seals Using Mean Profile Depth
… from the Virginia Department of Transportation (VDOT) area. Considering both qualitative (visual assessment) and quantitative (MPD analysis) approaches, this study delineates definitive categories representative of chip seal quality. These categories included good quality chip seals, with minimal …
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Repair of Impact-Damaged Prestressed Bridge Girders Using Strand Splices and Fiber-Reinforced Polymer
This study is part of a VDOT sponsored project focusing on repair techniques for impact damaged prestressed bridge girders. The investigation included evaluation of the repair installation and flexural strength of four AASHTO Type III girders that were intentionally damaged and repaired. In …
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Development of Enhanced Pavement Deterioration Curves
… values. Virginia Department of Transportation (VDOT) annually collects pavement condition data on road sections with various lengths. Due to the nature of data collection practices, many biased measurements or influential outliers exist in this data. Upon the investigation of data quality and …
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Pavement Surface Characteristics Evaluation Using Vehicle-Based Data Collection
… Roughness Index (IRI) values used by VDOT. Data collected using both methods were matched using Matlab code to have a common linear referencing system. Subjective visual comparison showed that both data sets had similar trends, highlighting roads with rough sections. A quantitative …
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Evaluation of Balanced Asphalt Surface Mixtures with Conventional and High RAP Contents Using Laboratory and Accelerated Pavement Testing
… current Virginia Department of Transportation (VDOT) BMD special provision. These mixtures can be produced in the plant with no significant deviations in aggregate gradation and asphalt binder content from the design specifications. The combined effect of variations in different volumetric …
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