Posted by: mahyarov - 10-24-2012, 09:08 AM - Forum: Concrete
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Connection of Simple-Span Precast Concrete Girders for Continuity
Author: Miller, R A Castrodale, R Mirmiran, A Hastak, M | Size: 4.72 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2004 | pages: 203 | ISBN: 0309087937
This report contains the findings of research to develop recommended details and specifications for the design of continuity connections for precast concrete girders. Examples illustrating the design of four precast girder types made continuous for live load were also developed. The material in this report will be of immediate interest to bridge designers.
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Load and Resistance Factor Design (LRFD) for Deep Foundations
Author: Paikowsky, S G Birgisson, B McVay, M Nguyen, T Kuo, C Baecher, G Ayyub, B Stenersen, K O'Malley, K Chernauskas, L O'Neill, M | Size: 1.86 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2004 | pages: 85 | ISBN: 0309087961
This report contains the findings of a study to develop resistance factors for driven pile and drilled shaft foundations. These factors are recommended for inclusion in Section 10 of the AASHTO Load and Resistance Factor Design (LRFD) Bridge Design Specifications to reflect current best practice in geotechnical design and construction. The report also provides a detailed procedure for calibrating deep foundation resistance. The material in this report will be of immediate interest to bridge engineers and geotechnical engineers involved in the design of pile and drilled shaft foundations.
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Guideline and Recommended Standard for Geofoam Applications in Highway Embankments
Author: Stark, T D Arellano, D Horvath, J S Leshchinsky, D | Size: 1.61 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2004 | pages: 73 | ISBN: 0309088046
This report provides a design guideline and recommended standard for geofoam applications in the design and construction of highway embankments. The guidelines and standard will assist highway agencies in designing and constructing highway embankments using expandable polystyrene (EPS) blocks. The report will be of immediate interest to engineers in the public and private sectors involved in the design, construction, and material specification of lightweight embankments constructed on soft foundation soils.
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Author: Wassef, W G Davis, D | Size: 1.37 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2004 | pages: 97 | ISBN: 0309088127
This report contains the findings of research to develop recommended details, design methodologies, and specifications for integral connections of steel superstructures to concrete intermediate piers. An example illustrating the design of the connection of the cap beam to the girders and column is also included. The material in this report will be of immediate interest to bridge designers.
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This report discusses the findings of a research project undertaken to investigate bridge scour in cohesive soils. The report presents a recommended method for predicting the extent of complex pier and contraction scour in cohesive soils. This report will be of immediate interest to engineers with responsibility for predicting the extent of scour at bridge foundations and to engineers with responsibility for designing bridge foundations and bridge scour countermeasures.
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Identification of Research Needs Related to Highway Runoff Management
Author: Venner, M Leisenring, M Pankani, D Strecker, E | Size: 1.30 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2004 | pages: 173 | ISBN: 0309088151
This report presents an analysis of research needs in the area of highway water runoff management and control. Research directors and water-quality professionals from state departments of transportation participated in a survey to identify pressing needs related to the impacts and control of stormwater runoff. The survey results were supplemented with an extensive literature review and analysis by the research team. This report will be of great value in formulating high-priority research efforts at the national, state, and local levels.
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Guidelines for Inspection and Strength Evaluation of Suspension Bridge Parallel Wire Cables
Author: Mayrbaurl, R M | Size: 8.98 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2004 | pages: - | ISBN: 0309088097
There are nearly 50 major suspension bridges in the United States, and more than half of them are more than 50 years old. To date there has been no reliable and nationally recognized procedure, either practical or theoretical, to inspect and evaluate the condition and strength of suspension bridge parallel-wire cables. This report contains recommendations for the inspection and strength evaluation of suspension bridge parallel-wire cables. It will be of immediate interest to suspension bridge owners and suspension bridge main cable inspectors. An accompanying CD-ROM contains a full account of the research leading to the development of the recommended guidelines and provides derivations of all equations.
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Optimal Timing of Pavement Preventive Maintenance Treatment Applications
Author: Peshkin, D G Hoerner, T E Zimmerman, K A | Size: 967 KB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2004 | pages: 84 | ISBN: 0309088119
This report describes a methodology for determining the optimal timing for the application of preventive maintenance treatments to flexible and rigid pavements. The methodology is also presented in the form of a macro-driven Microsoft (registered trademark) Excel Visual Basic Application--designated OPTime--available to users by accessing the National Cooperative Highway Research Program (NCHRP) website (http://trb.org/news/blurb_detail.asp?id=4306). The methodology is based on the analysis of performance and cost data and applies to any of the treatments and application methods that are used by highway agencies. A plan for constructing and monitoring experimental test sections is also provided to assist highway agencies in collecting the necessary data if such data are not readily available. The report is a useful resource for state and local highway agency personnel and others involved in pavement maintenance and preservation.
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Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design
Author: Prowell, Brian D | Size: 1.18 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2005 | pages: 126 | ISBN: 0309088232
This report includes guidelines for collecting traffic data to be used in pavement design and software for analyzing traffic data and producing traffic data inputs required for mechanistic pavement analysis and design. The software--designated TrafLoad--is available to users online (
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). The report also describes the actions required at both the state and national level to promote successful implementation of the software. The report is a useful resource for state personnel and others involved in planning and designing highway pavements.
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Aggregate Properties and the Performance of Superpave-Designed Hot-Mix Asphalt
Author: Prowell, Brian D | Size: 1.33 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2005 | pages: 98 | ISBN: 0309088259
This report presents a critical review of the technical literature available since the conclusion of the Strategic Highway Research Program in 1993 on the impact of the aggregate properties specified by the Superpave mix design method on the performance of hot mix asphalt. The report will be of particular interest to materials engineers in state highway agencies, as well as to materials supplier and paving contractor personnel responsible for the production of aggregates and hot mix asphalt.
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