Development Of An Nchrp Report 350 Tl 3 New Jersey Shape 50 Inch Portable Concrete Barrier
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Author | : Chuck A. Plaxico |
Publisher | : |
Total Pages | : 198 |
Release | : 2006 |
Genre | : Concrete |
ISBN | : |
For roadside work-zones in areas that have opposing traffic flow, safety is enhanced if the temporary barriers incorporate a "glare-shield" that blocks headlight glare from opposing traffic. Currently-available 32-inch portable concrete barriers require the use of an add-on glare shield attached to the top of the barrier. The add-on glare shields are an extra expense and complicate barrier set-up and handling. An alternative solution was to develop a 50-inch high portable concrete barrier which is tall enough to serve as its own glare-shield. Finite element analysis was used to investigate various barrier shapes and connection schemes to identify a successful crashworthy design that would meet requirments of NCHRP Report 350 Test level 3. A 50-inch portable concrete barrier design was developed based on the results of the finite element analyses and was crash tested at the Transportation Research Center in East Liberty, Ohio. The system successfully met all safety criteria of NCHRP Report 350 and has been approved by the Federal Highway Administration for use on the National Highway System as a test level 3 device.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2005 |
Genre | : Electronic book |
ISBN | : |
Author | : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety |
Publisher | : |
Total Pages | : 560 |
Release | : 1989 |
Genre | : Roads |
ISBN | : |
Author | : Chuck A. Plaxico |
Publisher | : Transportation Research Board |
Total Pages | : 106 |
Release | : 2005 |
Genre | : Technology & Engineering |
ISBN | : 0309088208 |
At head of title: National Cooperative Highway Research Program.
Author | : Jay Ameratunga |
Publisher | : Springer |
Total Pages | : 236 |
Release | : 2015-12-11 |
Genre | : Science |
ISBN | : 8132226291 |
This book presents a one-stop reference to the empirical correlations used extensively in geotechnical engineering. Empirical correlations play a key role in geotechnical engineering designs and analysis. Laboratory and in situ testing of soils can add significant cost to a civil engineering project. By using appropriate empirical correlations, it is possible to derive many design parameters, thus limiting our reliance on these soil tests. The authors have decades of experience in geotechnical engineering, as professional engineers or researchers. The objective of this book is to present a critical evaluation of a wide range of empirical correlations reported in the literature, along with typical values of soil parameters, in the light of their experience and knowledge. This book will be a one-stop-shop for the practising professionals, geotechnical researchers and academics looking for specific correlations for estimating certain geotechnical parameters. The empirical correlations in the forms of equations and charts and typical values are collated from extensive literature review, and from the authors' database.
Author | : |
Publisher | : Transportation Research Board |
Total Pages | : 339 |
Release | : 2004 |
Genre | : Aged automobile drivers |
ISBN | : 0309077451 |
Author | : Tom Iseley |
Publisher | : Transportation Research Board |
Total Pages | : 88 |
Release | : 1997 |
Genre | : Technology & Engineering |
ISBN | : 9780309060219 |
This synthesis will be of interest to geologists; geotechnical, construction, and maintenance engineers; other state department of transportation (DOT) personnel involved with the planning, design, and permit issuance for conduits beneath roadways; local transportation agencies; utility contractors and consultants; and trenchless construction equipment manufacturers. It describes the current state of the practice for the use of trenchless technology for installing conduits beneath roadways. Trenchless construction is a process of installing, rehabilitating, or replacing underground utility systems without open-cut excavation. The synthesis is focused on trenchless technology for new installations. This report of the Transportation Research Board describes the trenchless installation technologies (methods, materials, and equipment) currently employed by state DOTs and other agencies to install conduits beneath roadways. The synthesis presents data obtained from a review of the literature and a survey of transportation agencies. For each technology identified, information is provided to describe the range of applications, basis for technique selection, site specific design factors to be considered, relative costs, common environmental issues, and example specifications. In addition, information on emerging technologies and research needs is presented.
Author | : Travel Model Improvement Program (U.S.) |
Publisher | : |
Total Pages | : 392 |
Release | : 1996 |
Genre | : Freight and freightage |
ISBN | : |
Author | : Cambridge Systematics |
Publisher | : Transportation Research Board |
Total Pages | : 108 |
Release | : 2010 |
Genre | : Transportation |
ISBN | : 0309154758 |
NCHRP Report 649/NCFRP Report 3: Separation of Vehicles - CMV-Only Lanes presents an extensive compendium of information about CMV-only lanes and examines major issues and concepts that should be understood in developing new applications of CMV-only lane concepts as a potential method for both easing congestion and reducing the number of traffic accidents on highways. Appendices to this report, including an annotated literature review, performance evaluation criteria, benefits monetization factors and unit costs, and net present value calculations for benefit-cost analysis, are available on the TRB website. This report and the supplemental information can be used by public agencies that may be considering CMV-only lane concepts in corridor studies or other planning applications. The report provides data such agencies can use to support their own evaluations of CMV-only lane projects.
Author | : A. T. Papagiannakis |
Publisher | : John Wiley & Sons |
Total Pages | : 555 |
Release | : 2017-02-22 |
Genre | : Technology & Engineering |
ISBN | : 1119412773 |
A comprehensive, state-of-the-art guide to pavement design and materials With innovations ranging from the advent of SuperpaveTM, the data generated by the Long Term Pavement Performance (LTPP) project, to the recent release of the Mechanistic-Empirical pavement design guide developed under NCHRP Study 1-37A, the field of pavement engineering is experiencing significant development. Pavement Design and Materials is a practical reference for both students and practicing engineers that explores all the aspects of pavement engineering, including materials, analysis, design, evaluation, and economic analysis. Historically, numerous techniques have been applied by a multitude of jurisdictions dealing with roadway pavements. This book focuses on the best-established, currently applicable techniques available. Pavement Design and Materials offers complete coverage of: The characterization of traffic input The characterization of pavement bases/subgrades and aggregates Asphalt binder and asphalt concrete characterization Portland cement and concrete characterization Analysis of flexible and rigid pavements Pavement evaluation Environmental effects on pavements The design of flexible and rigid pavements Pavement rehabilitation Economic analysis of alternative pavement designs The coverage is accompanied by suggestions for software for implementing various analytical techniques described in these chapters. These tools are easily accessible through the book’s companion Web site, which is constantly updated to ensure that the reader finds the most up-to-date software available.