AISC DESIGN GUIDE 24
Hollow Structural Section Connections
|Publication Date:||1 January 2010|
This Design Guide is a supplement to the 13th edition of the American Institute of Steel Construction (AISC) Steel Construction Manual and its companion CD. The Manual contains sections on bolting to hollow structural sections (HSS), welding considerations for HSS, simple shear connections to HSS columns, fully restrained moment connections to HSS columns, and design considerations for HSS-to-HSS truss connections. The companion CD has seven examples of simple shear connections to HSS columns. Therefore, this Guide does not have a chapter on simple shear connections. The CD also has examples of a transverse plate on a rectangular HSS, a longitudinal plate on a round HSS, and HSS braces with end gusset plates, as well as examples of the design of cap plates, base plates and end plates on HSS members.
The examples in this Guide conform to the 2005 AISC Specification for Structural Steel Buildings. Both load and resistance factor design (LRFD) and allowable strength design (ASD) solutions are presented. References are given to applicable sections of the Specification and to design tables in the Manual. This Guide contains a few additional tables that are applicable to HSS connections. It is recommended that readers of this Guide first become familiar with the Specification provisions for HSS connections and the accompanying Specification Commentary.
Some of the material in this Guide is based on the AISC Hollow Structural Sections Connections Manual published in 1997. However, because the AISC Specification has evolved from that in effect in 1997, the 13th edition Manual and this Guide supersede the previous HSS Manual.
Chapter K of the Specification presents the criteria for forces (axial force, in-plane moment and out-of-plane moment) in branch members framing into a main member. In this Guide, these same equations appear in a tabular format with drawings showing the connection configuration. This format is easier to follow than the descriptive text in the Specification. The design examples of direct HSS-to-HSS connections refer to both the appropriate tables in this Guide and the Specification equations.