AISC DESIGN GUIDE 28
Stability Design of Steel Buildings
|Publication Date:||1 January 2013|
PURPOSE OF THIS DESIGN GUIDE
With the 2005 AISC Specification for Structural Steel Buildings (AISC, 2005a), hereafter referred to as the AISC Specification, the state of the art was advanced to include three methods for stability design, including the introduction of a powerful new approach-the direct analysis method (DM). The DM is a practical alternative to the more traditional effective length method (ELM), which has been the basis of stability considerations in earlier editions of the AISC Specification, and continues to be permitted. In addition, the third method provided is a streamlined design procedure called the first-order analysis method (FOM), which is based upon the DM with a number of conservative simplifications.
The primary purpose of this Design Guide is to discuss the application of each of the aforementioned three methods and to introduce the DM to practicing engineers. The DM is permitted and referenced in Chapter C of the AISC Specification, and its procedural details are described in Appendix 7. As explained in Chapter C and in this Design Guide, the DM is required in cases where the second-order effects due to sidesway are significant.