TRB’s National Cooperative Highway Research Program (NCHRP) Research Report 906 includes proposed revisions to the AASHTO LRFD Bridge Design Specifications minimum flexural reinforcement provisions for load and resistance factor design (LRFD) with detailed design examples illustrating the application of the proposed revisions.
According to the AASHTO LRFD Bridge Design Specifications, minimum reinforcement provisions are intended to reduce the probability of brittle failure by providing flexural capacity greater than the cracking moment. There was a concern with the current American Association of State Highway and Transportation Officials (AASHTO) LRFD minimum flexural reinforcement requirements, especially when applied to pretensioned or post-tensioned concrete flexural members.
A number of deliverables for the project are provided in three appendices to the contractor’s final report that are available online. They include the following:
Appendix A: Test Girder Drawings,
Appendix B: Design Examples, and
Appendix C: Parametric Study Results.
Table of Contents
|Chapter 1 - Introduction||4-5|
|Chapter 2 - State of Knowledge on Minimum Reinforcement Requirements||6-24|
|Chapter 3 - Experimental and Analytical Investigations||25-84|
|Chapter 4 - Specifications Update||85-97|
|Chapter 5 - Conclusions||98-99|
|List of Notations||100-102|
The National Academies Press and the Transportation Research Board have partnered with Copyright Clearance Center to offer a variety of options for reusing our content. You may request permission to:
For most Academic and Educational uses no royalties will be charged although you are required to obtain a license and comply with the license terms and conditions.
For information on how to request permission to translate our work and for any other rights related query please click here.
For questions about using the Copyright.com service, please contact:
Copyright Clearance Center
22 Rosewood Drive
Danvers, MA 01923
Tel (toll free): 855/239-3415 (select option 1)
Loading stats for LRFD Minimum Flexural Reinforcement Requirements...