Engineering Journal Article Downloads → Weld Effective Lengths for Rectangular HSS Overlapped K-Connections

Weld Effective Lengths for Rectangular HSS Overlapped K-Connections
Author: Kyle Tousignant and Jeffrey A. Packer

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One large-scale, 33-ft-span, simply supported, Warren truss was tested to assess the performance of welds in rectangular hollow structural section (HSS) overlapped K-connections. The structural reliability (or safety index) of the existing AISC Specification formulas for the effective length of welds in rectangular HSS overlapped K-connections, in Table K4.1 of the 2010 AISC Specification for Structural Steel Buildings, was determined from the tests. The results indicate that these provisions are conservative; hence, a modification to the current requirements that limits the effective width of the transverse weld elements is proposed. The proposal establishes a more economical and yet still safe weld design method for rectangular HSS overlapped K-connections.