Load And Resistance Factor Design Lrfd For Deep Foundations

Author : Samuel G. Paikowsky
Publisher : Transportation Research Board
ISBN 13 : 0309087961
Total Pages : 87 pages
Book Rating : 4.64/5 ( download)

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Download or read book Load and Resistance Factor Design (LRFD) for Deep Foundations written by Samuel G. Paikowsky and published by Transportation Research Board. This book was released on 2004 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction and research approach -- Findings -- Interpretation, appraisal, and applications -- Conclusions and suggested research -- Bibliography -- Appendixes.

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.73/5 ( download)

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Download or read book NCHRP Report 507 written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Kevin C. Foye
Publisher :
ISBN 13 : 9781622602414
Total Pages : pages
Book Rating : 4.12/5 ( download)

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Download or read book Limit States Design (LSD) for Shallow and Deep Foundations written by Kevin C. Foye and published by . This book was released on 2004-12-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Load and Resistance Factor Design (LRFD) shows promise as a viable alternative to the present working stress design (WSD) approach to foundation design. The key improvements of LRFD over the traditional Working Stress Design (WSD) are the ability to provide a more consistent level of reliability and the possibility of accounting for load and resistance uncertainties separately. In order for foundation design to be consistent with current structural design practice, the use of the same loads, load factors and load combinations would be required. In this study, we review the load factors presented in various LRFD Codes from the US, Canada and Europe. For LRFD to gain acceptance in geotechnical engineering, a framework for the objective assessment of resistance factors is needed. Such a framework, based on reliability analysis is proposed in this study. Probability Density Functions (PDFs), representing design variable uncertainties, are required for analysis. A systematic approach to the selection of PDFs is presented. Such a procedure is a critical prerequisite to a rational probabilistic analysis in the development of LRFD methods in geotechnical engineering. Additionally, in order for LRFD to fulfill its promise for designs with more consistent reliability, the methods used to execute a design must be consistent with the methods assumed in the development of the LRFD factors. In this study, a methodology for the estimation of soil parameters for use in design equations is proposed that should allow for more statistical consistency in design inputs than is possible in traditional methods. Resistance factor values are dependent upon the values of load factors used. Thus, a method to adjust the resistance factors to account for code-specified load factors is also presented. The various considered methods obtain their input parameters from the CPT, the SPT, or laboratory testing. Designers may wish to use design methods that are not considered in this study. As such, the designer needs the capability to select resistance factors that reflect the uncertainty of the design method chosen. A methodology is proposed in this study to accomplish this task, in a way that is consistent with the framework.

Author : George G. Goble
Publisher : Transportation Research Board
ISBN 13 : 9780309068543
Total Pages : 80 pages
Book Rating : 4.41/5 ( download)

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Download or read book Geotechnical Related Development and Implementation of Load and Resistance Factor Design (LRFD) Methods written by George G. Goble and published by Transportation Research Board. This book was released on 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis report will be of interest to geotechnical, structural, and bridge engineers, especially those involved in the development and implementation of the geotechnical aspects of the AASHTO Bridge Code. The synthesis documents a review of geotechnical related LRFD specifications and their development worldwide to compare them with the current AASHTO LRFD Bridge Code. Design procedures for foundations, earth retaining structures, and culverts are summarized and compared with the methods specified by the AASHTO code. This TRB report provides information designed to assist engineers in implementing the geotechnical features of LRFD methods. Information for the synthesis was collected by surveying U.S. and Canadian transportation agencies and by conducting a literature search using domestic and international sources. Interviews were also conducted with selected international experts. The limited available experience in the United States and information from international practice are discussed to understand the problems that have arisen in order that solutions may be found. Based on the studies reported here, suggestions for improving the code are identified.

Author : Rodrigo Salgado
Publisher : Purdue University Press
ISBN 13 : 9781622600076
Total Pages : 76 pages
Book Rating : 4.7X/5 ( download)

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Download or read book Development of Load and Resistance Factor Design for Ultimate and Serviceability Limit States of Transportation Structure Foundations written by Rodrigo Salgado and published by Purdue University Press. This book was released on 2011-10-12 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most foundation solutions for transportation structures rely on deep foundations, often on pile foundations configured in a way most suitable to the problem at hand. Design of pile foundation solutions can best be pursued by clearly defining limit states and then configuring the piles in such a way as to prevent the attainment of these limit states. The present report develops methods for load and resistance factor design (LRFD) of piles, both nondisplacement and displacement piles, in sand and clay. With the exception of the method for design of displacement piles in sand, all the methods are based on rigorous theoretical mechanics solutions of the pile loading problem. In all cases, the uncertainty of the variables appearing in the problem and of the relationships linking these variables to the resistance calculated using these relationships are carefully assessed. Monte Carlo simulations using these relationships and the associated variabilities allow simulation of resistance minus load distributions and therefore probability of failure. The mean (or nominal) values of the variables can be adjusted so that the probability of failure can be made to match a target probability of failure. Since an infinite number of combinations of these means can be made to lead to the same target probability of failure, we have developed a way to determine the most likely ultimate limit state for a given probability of failure. Once the most likely ultimate limit state is determined, the values of loads and resistances for this limit state can be used, together with the values of the mean (or nominal) loads and resistances to calculate load and resistance factors. The last step in the process involves adjusting the resistance factors so that they are consistent with the load factors specified by AASHTO. Recommended resistance factors are then given together with the design methods for which they were developed.

Author : Y. Honjo
Publisher : CRC Press
ISBN 13 : 9789058093813
Total Pages : 474 pages
Book Rating : 4.16/5 ( download)

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Download or read book Foundation Design Codes and Soil Investigation in View of International Harmonization and Performance Based Design written by Y. Honjo and published by CRC Press. This book was released on 2002-01-01 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributions contained in these proceedings are divided into three main sections: theme lectures presented during the pre-workshop lecture series; keynote lectures and other contributed papers; and a translation of the Japanese geotechnical design code.

Author : Bernard Hertlein
Publisher : John Wiley & Sons
ISBN 13 : 0470034823
Total Pages : 290 pages
Book Rating : 4.28/5 ( download)

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Download or read book Nondestructive Testing of Deep Foundations written by Bernard Hertlein and published by John Wiley & Sons. This book was released on 2007-01-11 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nondestructive Testing involves the use of methods such as wave propagation, electromagnetism, electrical conductivity, and thermal conductivity to test structural integrity and thereby allow nondestructive assessment of structures and the possibility of structural failures before they occur. Nondestructive Testing of Deep Foundations covers different techniques designed to provide information about the integrity and quality of the material that makes up a deep foundation. Nondestructive Testing methods are used at all stages of a structure's life - from new construction quality control to residual lifetime prediction, and even during the monitoring of demolition. In addition, Nondestructive Testing is being increasingly specified in deep foundation projects, though often without a good understanding of its limitations and with the result that methods are often misused. In order to be able to specify an appropriate method, or to recognize an inappropriate specification, it is necessary for the engineer, specifier and/or contractor to understand the capabilities and limitations of each of the methods currently in use. Nondestructive Testing of Deep Foundations: Describes the most commonly used deep foundation construction techniques, including typical use of material Provides a brief history of the development of commercially available nondestructive methods Summarises each method's capabilities and limitations Acts as a one stop reference drawing together resources only previously available in conference proceedings and journal papers This manual will prove to be a welcome addition to the bookshelf of all practitioners in civil/structural and geotechnical engineering and architecture. It will also provide a valuable insight into this highly technical field for university researchers, lecturers and postgraduate students in civil/structural and geotechnical engineering.

Author : Michael W. O'Neill
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.90/5 ( download)

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Download or read book Drilled Shafts written by Michael W. O'Neill and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Publisher : Transportation Research Board National Research
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.66/5 ( download)

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Download or read book LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures written by and published by Transportation Research Board National Research. This book was released on 2010 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report develops and calibrates procedures and modifies the AASHTO LRFD Bridge Design Specifications, Section 10-Foundations for the Strength Limit State Design of Shallow Foundations. The material in this report will be of immediate interest to bridge engineers and geotechnical engineers involved in the design of shallow foundations.

Author : Yoshiaki Kikuchi
Publisher : Taylor & Francis
ISBN 13 : 1134076274
Total Pages : 438 pages
Book Rating : 4.77/5 ( download)

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Download or read book Advances in Deep Foundations written by Yoshiaki Kikuchi and published by Taylor & Francis. This book was released on 2007-06-21 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Civil Engineering has recently seen enormous progress in the core field of the construction of deep foundations. This book is the result of the International Workshop on Recent Advances in Deep Foundations (IWDPF07), which was held in Yokosuka, Japan from the 1st to the 2nd of February, 2007. Topics under discussion in this book include recent rese