This report summarizes the results of a project to establish limits, based on fatigue and fracture performance, on the number of damage and repair cycles to which damaged steel bridge girders may be subjected using the heat-straightening procedure. A key product presented here is suggested revisions to the Federal Highway Administration (FHWA) manual of practice for heat straightening. The report will be of particular interest to engineers in state highway agencies and industry responsible for bridge maintenance and repair.
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This report summarizes the results of a project to establish limits, based on fatigue and fracture performance, on the number of damage and repair cycles to which damaged steel bridge girders may be subjected using the heat-straightening procedure. A key product presented here is suggested revisions to the Federal Highway Administration (FHWA) manual of practice for heat straightening. The report will be of particular interest to engineers in state highway agencies and industry responsible for bridge maintenance and repair.
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Multimodal Level of Service Analysis for Urban Streets
Author: Dowling, Richard G | Size: 4.84 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2008 | pages: 120 | ISBN: 9780309117425
This report will be of interest to public agencies responsible for the planning, design, and operation of urban streets. This report provides a method for assessing how well an urban street serves the needs of all of its users: auto drivers, transit passengers, bicycle riders, and pedestrians. The project developed and calibrated a method for evaluating the multimodal level of service (MMLOS) provided by different urban street designs and operations.
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Transfer, Development, and Splice Length for Strand/Reinforcement in High-Strength Concrete
Author: Ramirez, Julio A | Size: 6.53 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2008 | pages: 130 | ISBN: 9780309117470
This report presents the findings of a research project to develop recommended design guidelines for safe and aesthetic roadside treatments in urban areas and a toolbox of effective roadside treatments that balance pedestrian, bicyclist, and motorist safety and mobility. The report will be of particular interest to designers and safety practitioners responsible for the design of arterial and collector-type facilities in urban areas.
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This report presents the findings of a research project to develop recommended design guidelines for safe and aesthetic roadside treatments in urban areas and a toolbox of effective roadside treatments that balance pedestrian, bicyclist, and motorist safety and mobility. The report will be of particular interest to designers and safety practitioners responsible for the design of arterial and collector-type facilities in urban areas.
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This report presents the findings of a research project to determine the crash rates for nighttime and daytime work zones, develop management practices that promote safety and mobility in work zones, and develop work-zone crash reporting recommendations to further improve the data collected on work zone crashes. The report will be of particular interest to practitioners responsible for work zone safety.
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Acceptance Tests for Surface Characteristics of Steel Strands in Prestressed Concrete
Author: Osborn, Andrew E N | Size: 7.32 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2008 | pages: 138 | ISBN: 9780309117616
This report provides practical tests to identify and measure residues (e.g., rust, lubricants used in manufacturing processes, or corrosion inhibitors) on the surface of steel prestressing strands and to establish thresholds for residue types found to affect the strength of the strand's bond to concrete. Key products presented here are four test methods suitable for use in a quality assurance program for the manufacture of steel prestressing strand. The report will be of particular interest to bridge engineers in state highway agencies and industry and to suppliers of steel prestressing strand.
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Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments
Author: Anderson, Donald G | Size: 9.77 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2008 | pages: 147 | ISBN: 9780309117654
This report provides analytical and design methods for the seismic design of retaining walls, buried structures, slopes, and embankments. The report details the development of the design procedures. Recommended load and resistance factor design (LRFD) specifications and design examples illustrating the application of the design methods and specifications are included in an Appendix. The material in this report will be of immediate interest to roadway and bridge designers.
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This report provides specifications, commentary, and examples for the design of horizontally curved concrete box-girder highway bridges. The report details the development of the design procedures. Recommended Load and Resistance Factor Design (LRFD) specifications and design examples illustrating the application of the design methods and specifications are included in appendixes (available on the TRB website at http://trb.org/news/blurb_detail.asp?id=9596). The material in this report will be of immediate interest to bridge designers.
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