Download or read book Anchor Embedment Requirements for Signal sign Structures written by Ronald A. Cook and published by . This book was released on 2007 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alternative Support Structures for Cantilever Signal sign Structures written by Kathryn L. Jenner and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: During the 2004 hurricane season, several anchor embedment failures of the support structures of cantilever signal/sign structures occurred. A previous research program determined the cause of these failures was by concrete breakout due to shear on the anchors directed parallel to the edge of the foundation. The purpose of the current research program was to take the knowledge obtained on the previous research program and identify a suitable alternative support structure without the use of anchor bolts. After a literature review and experimental testing, it was determined that an embedded pipe with welded plates was a suitable alternative support structure. The torsion could be adequately transferred to the support structure concrete through the vertical torsional plates and the flexure could be adequately transferred to the concrete through the welded annular plate on the bottom of the pipe. Furthermore, it was determined that the alternative selected was not only a viable alternative to the anchor bolt system, but it had greater strength than the anchor bolt system. The test specimens were designed to fail by concrete breakout originating from the torsional and flexural plates. The rest of the testing apparatus was designed to preclude failure. The results of the testing indicated that the concrete breakout was the failure mode for the embedded pipe and plate configuration and that the concrete breakout strength could be accurately predicted using modified equations for concrete breakout from ACI 318-08 Appendix D. The results of these tests led to the development of guidelines for the design of the embedded pipe and plate configuration. Recommendations for future testing include an alternative base connection that precludes the use of annular plates.

Download or read book Structural Supports for Highway Signs Luminaires and Traffic Signals written by Fouad H. Fouad and published by Transportation Research Board. This book was released on 2003 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Connections between Steel and Concrete written by Rolf Eligehausen and published by ibidem-Verlag / ibidem Press. This book was released on 2012-02-27 with total page 1430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anchorage by fasteners and composite structures of steel and concrete have seen dramatic progress in research, technology and application over the past decades. The understanding of the fundamental principles underlying both disciplines has significantly improved. Concurrently, there has been rapid growth in the development of sophisticated new products and the establishment of international directives and codes to ensure their safe and economical use in a wide range of engineered structures. Although they deal with very similar problems, the two disciplines have developed independently from each other. To optimize the use of composite structures and fastenings to concrete, however, it is necessary to have knowledge of both: the local behavior of the fastening system and the global behavior of the structure. It became apparent that a forum offering the opportunity to expand and to exchange experience in the field of connecting steel and concrete would benefit all involved. Furthermore this forum would aid in the rapid dissemination of new ideas, technologies and solutions as well as explore new areas of research.This book forms the Proceedings of the 2 Symposium on “Connections between Steel and Concrete”. As the 1 Symposium in 2001 it brought together leading experts from all facets of the research, design, construction and anchor manufacturing community from around the world. Their lectures covered the topics:- test methods- behavior and design- dynamic loading: shock, earthquake, fatigue- durability- exceptional applications, strenghtening and structures- related topicsIn total 129 papers are gathered in these 2 volumes.

Download or read book Implementation of New Guidelines for Tightening Large Anchor Rods of Support Structures for Signs and Luminaires written by Brent Phares and published by . This book was released on 2020 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the US, many state departments of transportation (DOTs) are experiencing issues with the loosening of anchor bolt nuts on overhead sign, luminaire, and traffic signal (SLTS) structures. Retightening loose nuts imposes a significant drain on state DOT resources. In addition, loosening of these nuts increases fatigue stresses on the anchor bolts, possibly increasing the risk of failure. Loose anchor bolt nuts were recorded on both old and new structures, some immediately after installation. Even after retightening by Minnesota Department of Transportation (MnDOT) maintenance workers, anchor bolt nuts were found to come loose within two years. In a previous project, new retightening specifications were developed based on laboratory testing, field monitoring, surveys of current practices, and finite element modeling. This project focused on implementation and evaluation of the proposed specifications from the previous project. Structural monitoring also continued on a previously instrumented overhead sign structure. Difficulties were discovered with the proposed procedures during implementation, including structure clearance, instruction clarity, and retightening timing. Overall, though, the proposed procedures were found to be effective in preventing loosening. Revisions to the specifications were suggested along with recommendations for further review to simplify the procedures through a future laboratory study.

Download or read book Structural Supports for Highway Signs Luminaires and Traffic Signals written by Fouad Hilmy Fouad and published by . This book was released on 1998 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Re tightening the Large Anchor Bolts of Support Structures for Signs and Luminaires Phase II written by Zachary Dietrich and published by . This book was released on 2021 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Minnesota Department of Transportation (MnDOT) funded two projects in an effort to mitigate anchor bolt connection loosening and develop improved pre-tensioning steps for its sign, luminaire, and traffic signal (SLTS) structures. The Phase I study proposed new pre-tensioning procedures, completed laboratory testing, did an in-depth literature review, and set up instrumentation. The next part of the work started by implementing the proposed procedures in the field and suggesting revisions to be investigated further in Phase II. Through this work, the structural monitoring objective was to better understand field fatigue forces on the anchor rods and develop a testing procedure to replicate field stresses accurately in the laboratory. In the Phase II project, lessons learned from both the field results and additional literature review were tested in the laboratory to balance the efficiency and efficacy of the revised pre-tensioning procedures. Feedback from stakeholders and experience from in-field inspections were considered for the revised procedures. Testing methods and conclusions were validated with finite element models and structural health monitoring. This final report brings all aspects of the work together and recommends improved procedures and additional studies.

Download or read book Structural Supports for Highway Signs Luminaires and Traffic Signals written by Fouad Hilmy Fouad and published by . This book was released on 1998 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sign Standards written by United States. Department of the Air Force and published by . This book was released on 1982 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Standard Specifications for Structural Supports for Highway Signs Luminaires and Traffic Signals written by American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures and published by . This book was released on 1975 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marine Structural Design written by Yong Bai and published by Butterworth-Heinemann. This book was released on 2015-09-18 with total page 1010 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine Structural Design, Second Edition, is a wide-ranging, practical guide to marine structural analysis and design, describing in detail the application of modern structural engineering principles to marine and offshore structures. Organized in five parts, the book covers basic structural design principles, strength, fatigue and fracture, and reliability and risk assessment, providing all the knowledge needed for limit-state design and re-assessment of existing structures. Updates to this edition include new chapters on structural health monitoring and risk-based decision-making, arctic marine structural development, and the addition of new LNG ship topics, including composite materials and structures, uncertainty analysis, and green ship concepts. - Provides the structural design principles, background theory, and know-how needed for marine and offshore structural design by analysis - Covers strength, fatigue and fracture, reliability, and risk assessment together in one resource, emphasizing practical considerations and applications - Updates to this edition include new chapters on structural health monitoring and risk-based decision making, and new content on arctic marine structural design

Download or read book Ground Anchors and Anchored Structures written by Petros P. Xanthakos and published by John Wiley & Sons. This book was released on 1991-09-03 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treating anchorages as a direct application of the laws of statics and the theories governing the transfer of load, this book focuses on designs that are safe and reasonably priced. It is divided into two parts. Following a general introduction in the first chapter, Part One goes on to explore anchor systems, components, installation and construction details. Presents special anchor systems such as extractable, compression-type, multibell, and regroutable anchors. Analyzes the transfer of load and its relation to failure modes and anchor load capacity; deals with design considerations; covers mechanisms and types of corrosion; and details anchor stressing, testing programs, and evaluation standards. Part Two considers uses and applications and design aspects of anchored structures; presents design examples of practical value and reasonable simplicity; and incorporates examples and case histories.

Download or read book Fatigue resistant Design of Cantilevered Signal Sign and Light Supports written by Robert Joseph Dexter and published by Transportation Research Board. This book was released on 2002 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Standard Specifications for Highway and Structure Construction written by Wisconsin. Department of Transportation and published by . This book was released on 2010 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Anchorage in Concrete Construction written by Rolf Eligehausen and published by John Wiley & Sons. This book was released on 2013-10-30 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Das Buch stellt den aktuellen Stand der kompletten Befestigungstechnik für Beton und Mauerwerk mit Einlegeteilen (Ankerschienen, Kopfbolzen), Dübeln (Metallspreizdübel, Hinterschnittdübel, Verbunddübel, Betonschrauben, Kunststoffdübel) und Setzbolzen umfassend dar. Die Befestigungselemente und ihre Wirkungsmechanismen werden ausführlich beschrieben und das Tragverhalten im ungerissenen und gerissenen Beton untersucht. Weiterhin werden das Korrosionsverhalten, das Verhalten bei Brandbeanspruchung sowie bei Erdbeben- und Schockbeanspruchung behandelt. Von besonderer internationaler Aktualität ist die Bemessung gemäß der europäischen und amerikanischen Normung. Praxisorientierte Kriterien zur Auswahl von Befestigungsmitteln und Bemessungsbeispiele runden das Werk zu einem einzigartigen Handbuch ab.

Download or read book Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions written by Francesco Silvestri and published by CRC Press. This book was released on 2019-10-22 with total page 5946 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions contains invited, keynote and theme lectures and regular papers presented at the 7th International Conference on Earthquake Geotechnical Engineering (Rome, Italy, 17-20 June 2019. The contributions deal with recent developments and advancements as well as case histories, field monitoring, experimental characterization, physical and analytical modelling, and applications related to the variety of environmental phenomena induced by earthquakes in soils and their effects on engineered systems interacting with them. The book is divided in the sections below: Invited papers Keynote papers Theme lectures Special Session on Large Scale Testing Special Session on Liquefact Projects Special Session on Lessons learned from recent earthquakes Special Session on the Central Italy earthquake Regular papers Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions provides a significant up-to-date collection of recent experiences and developments, and aims at engineers, geologists and seismologists, consultants, public and private contractors, local national and international authorities, and to all those involved in research and practice related to Earthquake Geotechnical Engineering.

Download or read book Comparative and Contrastive Studies of Information Structure written by Carsten Breul and published by John Benjamins Publishing. This book was released on 2010 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The present book contains a selection of articles based on papers presented at the conference on 'Contrastive Information Structure Analysis' organised by Carsten Breul at the University of Wuppertal in March 2008"--Pref.