Load and Resistance Factor Design (LRFD) For Highway Bridge April 2007 Superstructures - Design Manual
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2007-04-01
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Abstract:This document presents the theory, methodology, and application for the design and construction of both steel and concrete highway bridge superstructures. The manual is based on the AASHTO LRFD Bridge Design Specifications Fourth Edition, 2007. Design examples and commentary throughout the manual are intended to serve as a guide to aid bridge structural design engineers with the implementation of the AASHTO LRFD Bridge Design Specifications, and is presented in both US Customary Units and Standard International Units. This manual is comprised of four volumes. Volume 1covers general steel and concrete superstructure design considerations including the history of bridge design, loads and load combinations, deck design, and bearing design. Volume 2 covers simple and continuous composite steel bridge superstructure design and construction with a focus on straight/skewed/curved girders, connections/splices, and bracing member design. Volume 3 covers the design and construction of simple and continuous composite concrete bridge superstructures concentrating on precast pretensioned girders, girder continuity by means of reinforced concrete joints and post-tenioning, and cast-in-place post-tensioned superstructures. Volume 4 provides detailed superstructure design examples which support the text in Volumes 1 through 3. The four design examples covered in Volume 4 include: a straight steel girder superstructure with no skew, a straight steel girder superstructure with a skew, a steel tub girder superstructure, and a concrete I-girder superstructure. AASHTO references are provided throughout each volume. Key reference documents used in the development of this manual are given immediately following each section in each chapter (as applicable).
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Content Notes:Baker Principle Investigator: Raymond A. Hartle, P.E.; Baker Project Manager: Scott D. Vannoy, P.E.; FHWA Contracting Officer’s Technical Representative: Louisa M. Ward; FHWA Contracting Officer's Task Manager: Firas I. Sheikh Ibrahim, Ph.D., P.E.; Review Team Members: Thomas K. Saad, P.E. and Jeff Smith.
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