Load Resistance Factor Design (LRFD) is the current specification recommended by the Amercian Institute of Steel Construction (AISC) for designing steel structures. This handbook offers structural engineers the latest LRFD AISC specifications that are now replacing ASD specification. A CD-ROM is included offering six interactive examples of key topics in the book. It includes special design methods dealing with vibrations due to foot falls, exercize halls and stadiums, and presents new material on fracture and fatigue design as well as torsion problems.