ABSTRACT
Steel with its higher strength, ductility and toughness makes a vital material for bridge structures. In this chapter, basic steel design concepts and requirements for I-sections specied in the AASHTOLRFD (AASHTO, 2012) for exure, shear, compression, tension, and serviceability are presented. Bolted and welded connections are also addressed. For more detailed discussion, references may be made to Salmon et al. (2009) and Ziemian (2010). Design considerations, procedures and examples for steel plate girders and box girders will be presented in Chapters 4 and 5 of the second book in this series, Superstructure Design.
