This paper describes the proposed 3rd edition of the IIW Static Design Procedure for Welded Hollow Section Joints, currently under preparation by the IIW sub-commission XV-E. It briefly summarizes the scope of the recommendations, the static design procedures, the research background and remaining issues to be resolved. INTRODUCTION The first edition of IIW sub-commission XV-E design recommendation on static strength of tubular joints (IIW 1981) was published in 1981. The second edition (IIW 1989) was published in 1989, which was used to produce the CIDECT Design Guides 1 and 3 on the static strength of tubular joints (Wardenier et al. 1991, Packer et al. 1992). Extensive research on tubular joints has been carried out all over the world in the last 16 years and some of those developments have been incorporated in CIDECT Design Guide 9 (Kurobane et al. 2004). There is a need to update the current static design rules. This paper describes the proposed 3rd edition of IIW Static Design Recommendations (IIW 2004) by the IIW sub-commission XV-E. It briefly summarizes the scope of the recommendations, the static design procedures (member forces, design criteria and design resistance), the research background and remaining issues to be resolved.
The recommendations deal with the static resistances of welded uniplanar and multiplanar joints in lattice structures of hollow sections. The recommendations are valid for both hot-finished and cold-formed steel hollow sections. The manufactured hollow sections should comply with the applicable national manufacturing specification for structural hollow sections. The nominal yield strength of hot finished hollow sections and the nominal yield strength of the cold-formed hollow section finished product should not exceed 460 N/mm2. The nominal wall thickness of hollow sections should be limited to a minimum of 2.5 mm.
