The AISC has made the 2010 Specification freely available on their website.
2010 Specification for Structural Steel Buildings (ANSI/AISC 360-10)
This specification provides the generally applicable requirements for the design and construction of structural steel buildings and other structures. The 2010 edition of the AISC Specification and Commentary supersedes and is an update of the 2005 edition. Both LRFD and ASD methods of design are incorporated. Dual-units format provides for both U.S. customary and S.I. units.