Anchor Rods - AISC Home

December 2004 Modern Steel ConstructionIn life there are a few things that arenecessary evils, and Anchor rods andcolumn base plate connections seem tobe one of them. These connectionshave caused problems on many build-ing projects, but by looking at the chal-lenges that others have faced and show-ing how these challenge have beensuccessfully overcome, perhaps we canmake the use of these important connec-tions more bearable. This article will givesome guidelines on how you can preventcommon problems in the design ofanchor rods and base plate connections,and will help the designer to avoidexpensive field repairs and scheduledelays. Specifications and design guidesare already in place to aid in the design ofthese connections for strength, but issuesof constructability should be consideredon every project, to ease the constructionprocess. The following chart offers somecommon challenges and easy solutionsfor how to improve everyday Anchor rodand column base plate connection Swiatek is a senior civil engineeringstudent at University of Illinois-Urbana-Champaign and a former AISC intern.

Specifying hooked anchor rods for axial loads Because a hook can straighten and pull out, hooked rods should not be used for axial loads. Exceptions include using them to pre-vent overturning caused by erection loads or collisions during erection. Use anchor rods that are headed or

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