This report establishes a user's manual for the acceptance, repair, or rejection of precast/prestressed concrete girders with longitudinal web cracking. The report also proposes revisions to the AASHTO LRFD Bridge Design Specifications and provides recommendations to develop improved crack control reinforcement details for use in new girders. The material in this report will be of immediate interest to bridge engineers.
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herein a miscellaneous Excel sheets created by a famous consultant office
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LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures
Author: Paikowsky, Samuel G | Size: 8.50 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2010 | pages: 147 | ISBN: 9780309154673
This report develops and calibrates procedures and modifies the AASHTO LRFD Bridge Design Specifications, Section 10 - Foundations for the Strength Limit State Design of Shallow Foundations. The material in this report will be of immediate interest to bridge engineers and geotechnical engineers involved in the design of shallow foundations.
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This guidebook provides insights from selected transportation agencies who are successfully integrating transportation performance management programs into a range of key decision-making processes in order to improve their effectiveness and transparency. This guidebook will assist transportation agency staff challenged with turning performance data into meaningful information that will influence agency decisions and actions. It should be of immediate use to those who have mastered the basics of performance measurement but who will benefit from a deeper understanding of what similar organizations have done in order to successfully integrate these systems into key decision-making processes.
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This guidebook provides guidance to state departments of transportation for using specific, practical, and risk-related management practices and analysis tools for managing and controlling transportation project costs. Containing a toolbox for agencies to use in selecting the appropriate strategies, methods and tools to apply in meeting their cost-estimation and cost-control objectives, this guidebook should be of immediate use to practitioners that are accountable for the accuracy and reliability of cost estimates during planning, priority programming and preconstruction.
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This report presents guidelines that will be of use to state departments of transportation, local governments, and consultants for the geometric design of driveways. It contains driveway-related terms and definitions, basic geometric controls, a summary of access spacing principles, and detailed discussions of various geometric design elements. The objective of the research was to develop recommendations for the geometric design of driveways that consider standard engineering practice and accessibility needs and provide for safe and efficient travel by motorists, pedestrians, and bicyclists on the affected roadway.
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This report presents a recommended guide specification for the design of externally bonded Fiber-Reinforced Polymer (FRP) systems for the repair and strengthening of concrete bridge elements. This guide specification addresses the design requirements for members subjected to different loading conditions (e.g., flexure, shear and torsion, and combined axial force and flexure). The guide specification is supplemented by design examples to illustrate its use for different FRP strengthening applications. The guide specification is presented in AASHTO LRFD format to facilitate use and incorporation into the "AASHTO LRFD Bridge Design Specifications." The material contained in the report should be of immediate interest to state engineers and others involved in the strengthening and repair of concrete structures using FRP composites.
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Design of Roadside Barrier Systems Placed on MSE Retaining Walls
Author: Bligh, Roger P | Size: 16.18 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2010 | pages: 194 | ISBN: 9780309154994
This report presents a design procedure for roadside barrier systems mounted on the edge of a mechanically stabilized earth (MSE) wall. The procedures were developed following AASHTO Load and Resistance Factor Design (LRFD) practices. The report will be of particular interest to personnel responsible for the structural design of MSE walls.
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Models for Predicting Reflection Cracking of Hot-Mix Asphalt Overlays
Author: Lytton, Robert L | Size: 3.41 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2010 | pages: 70 | ISBN: 9780309155052
This report presents mechanistic-based models for predicting the extent and severity of reflection cracking in hot-mix asphalt (HMA) overlays. These models were developed for use in the design and analysis of HMA overlays; they can be incorporated into the AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG) software. The report and accompanying software will guide pavement and construction engineers in identifying and specifying HMA overlays for asphalt and concrete pavements that will provide desired service life and performance. The information contained in the report will be of immediate interest to state pavement engineers and others concerned with the design and rehabilitation of asphalt and concrete pavements.
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