Simplified Load Distribution Factor For Use In Lrfd Design

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Simplified Load Distribution Factor for Use in LRFD Design

Author : Elisa D. Sotelino
Publisher :
ISBN 13 : 9781622602407
Total Pages : pages
Book Rating : 4.6/5 (24 download)

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Book Synopsis Simplified Load Distribution Factor for Use in LRFD Design by : Elisa D. Sotelino

Download or read book Simplified Load Distribution Factor for Use in LRFD Design written by Elisa D. Sotelino and published by . This book was released on 2004-09-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The “S-over” equation for the load distribution factor (LDF) was first introduced in the 1930s in the AASHTO Standard. Finite element studies, however, have shown it to be unsafe in some cases and too conservative in others. In this study, a new simplified equation that is based on the AASHTO LRFD formula and does not require an iterative procedure is developed. The new simplified equation produces LDF values that are always conservative when compared to those obtained from the finite element analyses and are generally greater than the LDF obtained using AASHTO LRFD specification. Therefore, the simplified equation provides a simple yet safe specification for LDF calculation. This study also investigates the effects of secondary elements and bridge deck cracking on the LDF of bridges. The AASHTO LRFD LDF equation was developed based on elastic finite element analysis considering only primary members, i.e., the effects of secondary elements such as lateral bracing and parapets were not considered. Meanwhile, many bridges have been identified as having significant cracking in the concrete deck. Even though deck cracking is a well-known phenomenon, the significance of pre-existing cracks on the live load distribution has not yet been assessed in the literature. First, secondary elements such as diaphragms and parapet were modeled using the finite element method, and the calculated load distribution factors were compared with the code-specified values. Second, the effects of typical deck cracking and crack types that have a major effect on load distribution were identified through a number of nonlinear finite element analyses. Transverse cracking was found to not significantly influence the transverse distribution of moment. Finally, for one of the selected bridges, both concrete cracking and secondary elements are considered to invesitigate their combined effect on lateral load distribution. The increased LDF due to deck cracking is offset by the contributions from the secondary elements. The result is that the proposed simplified equation is conservative and is recommended for determination of LDF.

Simplified Live Load Distribution Factor Equations

Author : BridgeTech, Inc
Publisher : Transportation Research Board
ISBN 13 : 0309099005
Total Pages : 137 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Simplified Live Load Distribution Factor Equations by : BridgeTech, Inc

Download or read book Simplified Live Load Distribution Factor Equations written by BridgeTech, Inc and published by Transportation Research Board. This book was released on 2007 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains the findings of research performed to develop recommended Load and Resistance Factor Design (LRFD) live load distribution factor design equations for shear and moment. The report details the development of equations that are simpler to apply and have a wider range of applicability than current methods. The appendices are not published in this report, but are available online at http://www.trb.org/news/blurb_detail.asp?id=7938.

Simplified LRFD Bridge Design

Author : Jai B. Kim
Publisher : CRC Press
ISBN 13 : 1466566515
Total Pages : 361 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Simplified LRFD Bridge Design by : Jai B. Kim

Download or read book Simplified LRFD Bridge Design written by Jai B. Kim and published by CRC Press. This book was released on 2013-04-08 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developed to comply with the fifth edition of the AASHTO LFRD Bridge Design Specifications [2010]––Simplified LRFD Bridge Design is "How To" use the Specifications book. Most engineering books utilize traditional deductive practices, beginning with in-depth theories and progressing to the application of theories. The inductive method in the book uses alternative approaches, literally teaching backwards. The book introduces topics by presenting specific design examples. Theories can be understood by students because they appear in the text only after specific design examples are presented, establishing the need to know theories. The emphasis of the book is on step-by-step design procedures of highway bridges by the LRFD method, and "How to Use" the AASHTO Specifications to solve design problems. Some of the design examples and practice problems covered include: Load combinations and load factors Strength limit states for superstructure design Design Live Load HL- 93 Un-factored and Factored Design Loads Fatigue Limit State and fatigue life; Service Limit State Number of design lanes Multiple presence factor of live load Dynamic load allowance Distribution of Live Loads per Lane Wind Loads, Earthquake Loads Plastic moment capacity of composite steel-concrete beam LRFR Load Rating Simplified LRFD Bridge Design is a study guide for engineers preparing for the PE examination as well as a classroom text for civil engineering students and a reference for practicing engineers. Eight design examples and three practice problems describe and introduce the use of articles, tables, and figures from the AASHTO LFRD Bridge Design Specifications. Whenever articles, tables, and figures in examples appear throughout the text, AASHTO LRFD specification numbers are also cited, so that users can cross-reference the material.

Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations

Author : Hiroshi Yokota
Publisher : CRC Press
ISBN 13 : 1000173755
Total Pages : 926 pages
Book Rating : 4.0/5 (1 download)

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Book Synopsis Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations by : Hiroshi Yokota

Download or read book Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations written by Hiroshi Yokota and published by CRC Press. This book was released on 2021-04-20 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations contains lectures and papers presented at the Tenth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2020), held in Sapporo, Hokkaido, Japan, April 11–15, 2021. This volume consists of a book of extended abstracts and a USB card containing the full papers of 571 contributions presented at IABMAS 2020, including the T.Y. Lin Lecture, 9 Keynote Lectures, and 561 technical papers from 40 countries. The contributions presented at IABMAS 2020 deal with the state of the art as well as emerging concepts and innovative applications related to the main aspects of maintenance, safety, management, life-cycle sustainability and technological innovations of bridges. Major topics include: advanced bridge design, construction and maintenance approaches, safety, reliability and risk evaluation, life-cycle management, life-cycle sustainability, standardization, analytical models, bridge management systems, service life prediction, maintenance and management strategies, structural health monitoring, non-destructive testing and field testing, safety, resilience, robustness and redundancy, durability enhancement, repair and rehabilitation, fatigue and corrosion, extreme loads, and application of information and computer technology and artificial intelligence for bridges, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of making more rational decisions on maintenance, safety, management, life-cycle sustainability and technological innovations of bridges for the purpose of enhancing the welfare of society. The Editors hope that these Proceedings will serve as a valuable reference to all concerned with bridge structure and infrastructure systems, including engineers, researchers, academics and students from all areas of bridge engineering.

Simplified Design of Steel Structures

Author : James Ambrose
Publisher : John Wiley & Sons
ISBN 13 : 9780471165743
Total Pages : 468 pages
Book Rating : 4.1/5 (657 download)

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Book Synopsis Simplified Design of Steel Structures by : James Ambrose

Download or read book Simplified Design of Steel Structures written by James Ambrose and published by John Wiley & Sons. This book was released on 1997 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seventh edition of Simplified Design of Steel Structures is an excellent reference for architects and engineers who need information about the common uses of steel for the structures of buildings. The clear and concise format benefits readers who have limited backgrounds in mathematics and engineering. This new edition has been updated to reflect changes in standards, industry technology, and construction practices, including new research in the field, examples of general building structural systems, and the use of computers in structural design. Specifically, Load and Resistance Factor Design (LRFD) and Allowable Stress Design (ASD) are now covered.

Earthquake Engineering

Author : Yousef Bozorgnia
Publisher : CRC Press
ISBN 13 : 0203486242
Total Pages : 958 pages
Book Rating : 4.2/5 (34 download)

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Book Synopsis Earthquake Engineering by : Yousef Bozorgnia

Download or read book Earthquake Engineering written by Yousef Bozorgnia and published by CRC Press. This book was released on 2004-05-11 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multi-contributor book provides comprehensive coverage of earthquake engineering problems, an overview of traditional methods, and the scientific background on recent developments. It discusses computer methods on structural analysis and provides access to the recent design methodologies and serves as a reference for both professionals and res

Design of FRP Systems for Strengthening Concrete Girders in Shear

Author : Abdeldjelil Belarbi
Publisher : Transportation Research Board
ISBN 13 : 0309155312
Total Pages : 130 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Design of FRP Systems for Strengthening Concrete Girders in Shear by : Abdeldjelil Belarbi

Download or read book Design of FRP Systems for Strengthening Concrete Girders in Shear written by Abdeldjelil Belarbi and published by Transportation Research Board. This book was released on 2011 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 678: Design of FRP Systems for Strengthening Concrete Girders in Shear offers suggested design guidelines for concrete girders strengthened in shear using externally bonded Fiber-Reinforced Polymer (FRP) systems. The guidelines address the strengthening schemes and application of the FRP systems and their contribution to shear capacity of reinforced and prestressed concrete girders. The guidelines are supplemented by design examples to illustrate their use for concrete beams strengthened with different FRP systems. Appendix A of NCHRP Report 678, which contains the research agency's final report, provides further elaboration on the work performed in this project. Appendix A: Research Description and Findings, is only available online.

Bridge Design and Evaluation

Author : Gongkang Fu
Publisher : John Wiley & Sons
ISBN 13 : 1118329937
Total Pages : 448 pages
Book Rating : 4.1/5 (183 download)

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Book Synopsis Bridge Design and Evaluation by : Gongkang Fu

Download or read book Bridge Design and Evaluation written by Gongkang Fu and published by John Wiley & Sons. This book was released on 2013-01-25 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: A succinct, real-world approach to complete bridge system design and evaluation Load and Resistance Factor Design (LRFD) and Load and Resistance Factor Rating (LRFR) are design and evaluation methods that have replaced or offered alternatives to other traditional methods as the new standards for designing and load-rating U.S. highway bridges. Bridge Design and Evaluation covers complete bridge systems (substructure and superstructure) in one succinct, manageable package. It presents real-world bridge examples demonstrating both their design and evaluation using LRFD and LRFR. Designed for a 3- to 4-credit undergraduate or graduate-level course, it presents the fundamentals of the topic without expanding needlessly into advanced or specialized topics. Important features include: Exclusive focus on LRFD and LRFR Hundreds of photographs and figures of real bridges to connect the theoretical with the practical Design and evaluation examples from real bridges including actual bridge plans and drawings and design methodologies Numerous exercise problems Specific design for a 3- to 4-credit course at the undergraduate or graduate level The only bridge engineering textbook to cover the important topics of bridge evaluation and rating Bridge Design and Evaluation is the most up-to-date and inclusive introduction available for students in civil engineering specializing in structural and transportation engineering.

Protocols for Collecting and Using Traffic Data in Bridge Design

Author : Bala Sivakumar
Publisher : Transportation Research Board
ISBN 13 : 0309155479
Total Pages : 125 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Protocols for Collecting and Using Traffic Data in Bridge Design by : Bala Sivakumar

Download or read book Protocols for Collecting and Using Traffic Data in Bridge Design written by Bala Sivakumar and published by Transportation Research Board. This book was released on 2011 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 683: Protocols for Collecting and Using Traffic Data in Bridge Design explores a set of protocols and methodologies for using available recent truck traffic data to develop and calibrate vehicular loads for superstructure design, fatigue design, deck design, and design for overload permits. The protocols are geared to address the collection, processing, and use of national weigh-in-motion (WIM) data. The report also gives practical examples of implementing these protocols with recent national WIM data drawn from states/sites around the country with different traffic exposures, load spectra, and truck configurations. The material in this report will be of immediate interest to bridge engineers. This report replaces NCHRP Web-Only Document 135: Protocols for Collecting and Using Traffic Data in Bridge Design. Appendices A through F for NCHRP Report 683 are available only online.

The Manual for Bridge Evaluation

Author : American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures
Publisher : AASHTO
ISBN 13 : 1560514965
Total Pages : 41 pages
Book Rating : 4.5/5 (65 download)

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Book Synopsis The Manual for Bridge Evaluation by : American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures

Download or read book The Manual for Bridge Evaluation written by American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures and published by AASHTO. This book was released on 2011 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Geotechnical Risk and Safety

Author : Yusuke Honjo
Publisher : CRC Press
ISBN 13 : 0203867319
Total Pages : 400 pages
Book Rating : 4.2/5 (38 download)

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Book Synopsis Geotechnical Risk and Safety by : Yusuke Honjo

Download or read book Geotechnical Risk and Safety written by Yusuke Honjo and published by CRC Press. This book was released on 2009-06-01 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Communication of risks within a transparent and accountable framework is essential in view of increasing mobility and the complexity of the modern society and the field of geotechnical engineering does not form an exception. As a result, modern risk assessment and management are required in all aspects of geotechnical issues, such as planning, desi

Fatigue Design of Modular Bridge Expansion Joints

Author : Robert Joseph Dexter
Publisher : Transportation Research Board
ISBN 13 : 9780309062558
Total Pages : 132 pages
Book Rating : 4.0/5 (625 download)

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Book Synopsis Fatigue Design of Modular Bridge Expansion Joints by : Robert Joseph Dexter

Download or read book Fatigue Design of Modular Bridge Expansion Joints written by Robert Joseph Dexter and published by Transportation Research Board. This book was released on 1997 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Infrastructure Management, Assessment and Rehabilitation

Author : Sherif Yehia
Publisher : Cambridge Scholars Publishing
ISBN 13 : 1527577856
Total Pages : 310 pages
Book Rating : 4.5/5 (275 download)

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Book Synopsis Infrastructure Management, Assessment and Rehabilitation by : Sherif Yehia

Download or read book Infrastructure Management, Assessment and Rehabilitation written by Sherif Yehia and published by Cambridge Scholars Publishing. This book was released on 2021-11-30 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together state-of-the-art research on the development of infrastructure management, assessment, and rehabilitation techniques. It sheds light on pioneering work on innovative 3D-printed concrete, novel methods for assessment of bridge decks, and advanced computer vision-based maintenance of civil infrastructure. The book is essential reading for infrastructure owners, engineers, and contractors, allowing them to gain insights into groundbreaking research that is paving the way toward sustainable and resilient infrastructure.

Recommended Design Specifications for Live Load Distribution to Buried Structures

Author : D. Lee Petersen
Publisher : Transportation Research Board
ISBN 13 : 0309118220
Total Pages : 85 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Recommended Design Specifications for Live Load Distribution to Buried Structures by : D. Lee Petersen

Download or read book Recommended Design Specifications for Live Load Distribution to Buried Structures written by D. Lee Petersen and published by Transportation Research Board. This book was released on 2010 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides recommendations to revise the AASHTO LRFD Bridge Design Specifications relating to the distribution of live load to buried structures. The report details the development of simplified design equations (SDEs) for structural response based on three-dimensional (3D) analysis of 830 buried culverts. In addition, the report provides guidelines for conducting 2D and 3D modeling for design situations with conditions not covered by the SDEs. The material in this report will be of immediate interest to roadway and bridge designers.

Minimum Design Loads for Buildings and Other Structures

Author : American Society of Civil Engineers
Publisher : Amer Society of Civil Engineers
ISBN 13 : 9780784404881
Total Pages : 352 pages
Book Rating : 4.4/5 (48 download)

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Book Synopsis Minimum Design Loads for Buildings and Other Structures by : American Society of Civil Engineers

Download or read book Minimum Design Loads for Buildings and Other Structures written by American Society of Civil Engineers and published by Amer Society of Civil Engineers. This book was released on 2000 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bridge Engineering: Design, Rehabilitation, and Maintenance of Modern Highway Bridges, Fourth Edition

Author : Jim J. Zhao
Publisher : McGraw Hill Professional
ISBN 13 : 1259643107
Total Pages : 560 pages
Book Rating : 4.2/5 (596 download)

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Book Synopsis Bridge Engineering: Design, Rehabilitation, and Maintenance of Modern Highway Bridges, Fourth Edition by : Jim J. Zhao

Download or read book Bridge Engineering: Design, Rehabilitation, and Maintenance of Modern Highway Bridges, Fourth Edition written by Jim J. Zhao and published by McGraw Hill Professional. This book was released on 2017-04-28 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge engineering essentials—fully updated to reflect the latest standards and regulations This thoroughly revised resource combines the latest LRFD bridge engineering standards with cutting-edge maintenance and rehabilitation techniques, enabling you to successfully address today’s challenging infrastructure projects. The book features cutting-edge analysis, design, and construction practices along with proven, cost-effective maintenance and repair methods. Bridge Engineering: Design, Rehabilitation, and Maintenance of Modern Highway Bridges, Fourth Edition, examines the entire lifecycle of a bridge, from inception, design, and construction to long-term maintenance and management. Two brand-new chapters cover foundations and superstructure rehabilitation. Real-world case studies and hundreds of helpful photos and illustrations are also included. • Fully aligns with the 7th Edition of AASHTO’s LRFD Bridge Design Specifications • All examples and equations are presented in both S.I. and U.S. units • Written by a pair of experienced civil engineers

Timber Construction Manual

Author : American Institute of Timber Construction (AITC)
Publisher : John Wiley & Sons
ISBN 13 : 1118279646
Total Pages : 660 pages
Book Rating : 4.1/5 (182 download)

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Book Synopsis Timber Construction Manual by : American Institute of Timber Construction (AITC)

Download or read book Timber Construction Manual written by American Institute of Timber Construction (AITC) and published by John Wiley & Sons. This book was released on 2012-07-16 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: THE DEFINITIVE DESIGN AND CONSTRUCTION INDUSTRY SOURCE FOR BUILDING WITH WOOD NOW IN A THOROUGHLY UPDATED SIXTH EDITION Since its first publication in 1966, Timber Construction Manual has become the essential design and construction industry resource for building with structural glued laminated timber. Timber Construction Manual, Sixth Edition provides architects, engineers, contractors, educators, and related professionals with up-to-date information on engineered timber construction, including the latest codes, construction methods, and authoritative design recommendations. Content has been reorganized to flow easily from information on wood properties and applications to specific design considerations. Based on the most reliable technical data available, this edition has been thoroughly revised to encompass: A thorough update of all recommended design criteria for timber structural members, systems, and connections An expanded collection of real-world design examples supported with detailed schematic drawings New material on the role of glulam in sustainable building practices The latest design and construction codes, including the 2012 National Design Specification for Wood Construction, AITC 117-2010, and examples featuring ASCE 7-10 and IBC 2009 More cross-referencing to other available AITC standards on the AITC website Since 1952, the AMERICAN INSTITUTE OF TIMBER CONSTRUCTION has been the national technical trade association of the structural glued laminated timber industry. AITC-recommended building and design codes for wood-based structures are considered authoritative in the United States building industry.