I am doing A&A work , we need to strengthen few rc beams with fiber wrap , i need design manuals or books based on BS standards with some reference. I need it urgently dear friends kindly help me.
A short review for design consideration of two common materials used in facade and curtain walling is presented. The characteristics of light-weight facade enveloping a building are different from the conventional steel or concrete structures. Glass cannot crack like concrete and it is much more brittle than steel. Aluminum involves many buckling modes similar to but more common than steel. Owing to the low Young modulus of elasticity around 1/3 of steel, buckling and large deflection nonlinear effects are important consideration in their design. This note summaries the most fundamental features of structures made of these materials.
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Does anyone have the following book:
Guidoboni, E, Ebel, J. (2009)
"Earthquakes and Tsunamis in the Past: A Guide to Techniques in Historical Seismology"
Cambridge University Press
ISBN 978-0-521-83795-8
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Author: Gransberg, Douglas D | Size: 3.76 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2008 | pages: 138 | ISBN: 9780309097955
For transportation design-build projects, the public agency has less control over day-to-day details of the process than with more traditional approaches to project design and construction. Design-build projects, therefore, require a thorough and thoughtful approach to assuring quality in the project by the public agency. This report examines how state transportation agencies have successfully approached quality assurance for design-build, including in procurement, design, construction, and post-construction operations and maintenance. Information for this study was gathered through a survey of all state departments of transportation (DOTs), literature review, content analysis of solicitation documents from 26 state DOTs, and review of policy documents from 17 state DOTs.
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The new Mechanistic Empirical Pavement Design Guide (MEPDG) and other existing pavement design guides use resilient modulus as the primary input parameter when characterizing stiffness of subsoils and unbound bases. Resilient modulus of soils is typically determined either by using laboratory tests or field tests. This report was prepared to describe the significance of the resilient modulus property, various methods of determining this property of subsoils and unbound bases, and the application of this parameter in the MEPDG. The report will be of interest to design, geotechnical and materials engineers and technicians. Information collected in this synthesis was based on a comprehensive literature review, surveys of pavement design, materials and geotechnical engineers from state departments of transportation (DOTs), and selected interviews. Information collected also included research reports from studies conducted by several state DOTs.
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Author: Hyman, William A | Size: 1.98 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2009 | pages: 112 | ISBN: 9780309098250
Performance-Based Maintenance Contracting (PBMC) provides incentives and disincentives to achieve desired outcomes or results from the maintenance contractor. This is distinct from the more usual practice for highway maintenance contracting—low bid combined with method specification. This report explores experience with PBMC in places where it has been adopted, including such issues as whether it has the potential to reduce costs and improve maintenance levels of service. Methods for implementing PBMC are also discussed. The report is likely to be useful for those agencies who are evaluating whether to include PBMC in their highway maintenance program. Information for this study was gathered by literature review of international experience, domestic U.S. state experience, federal government experience, and warranty contracts, as well as surveys conducted of state transportation agencies, Canadian provincial agencies, and a sampling of private firms. The surveys were augmented with individual interviews.
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Performance-Based Construction Contractor Prequalification
Author: Gransberg, Douglas D University of Oklahoma, Norman Riemer, Caleb University of Oklahoma, Norman | Size: 2.21 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2009 | pages: 109 | ISBN: 9780309098281
Performance-based construction contractor prequalification seeks to add contractors' past performance to the prequalification process. Performance criteria may include construction quality, keeping to schedule, and safety record. This report summarizes experience and practice of state transportation agencies and includes information from non-transportation construction. The focus is on design-bid-build projects; however, there is also information on design-build and construction manager/general contractor projects. Information was gathered through a literature review augmented by content analyses of administrative prequalification documents and Requests for Qualifications. A survey was administered to state transportation agencies and Canadian provincial transportation agencies. Finally, structured interviews were conducted with construction contractors to obtain an industry perspective.
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Author: Russell, Henry G | Size: 15.77 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2009 | pages: 83 | ISBN: 9780309098304
Bridges built with adjacent precast, prestressed concrete box beams are a popular and economical solution in many states because they can be constructed rapidly and most deck forming is eliminated. Bridges constructed with box beams have been in service for many years and have generally performed well. A recurring problem, however, is cracking in the longitudinal grouted joints between adjacent beams, resulting in reflective cracks forming in the wearing surface. This in turn may lead to leakage, corrosion, and, in severe cases, complete cracking of joints and loss of load transfer. This study discusses current design and construction practices that are reported to reduce the likelihood of longitudinal cracking in box beam bridges. Information for the study was gathered through a literature review. In addition, state and Canadian provincial transportation agencies were surveyed, and the survey was augmented with selected individual interviews.
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Scour is the primary cause of bridge failure in the United States. There are more than 20,000 highway bridges that are rated "scour critical." Selected bridges have been monitored for more than ten years and valuable field data have been obtained from these bridges. This report presents the current state of practice for fixed scour bridge monitoring. It will be useful for bridge owners, in particular those responsible for bridge maintenance and safety. Information for this report was obtained through literature review, survey of the state transportation agencies, and selected interviews.
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This study gathers information on current practices that senior managers at transportation agencies use to make network-level decisions on resource allocations for their bridge programs. In particular, the study explores how agency bridge management systems are employed in this process. Information was gathered through a review of literature on U.S. and international bridge management, a survey of U.S. and Canadian transportation agencies, and 15 in-depth interviews with state department of transportation executive and bridge managers.
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