Since 1964, the International Institute of Welding (IIW) Commission XV has maintained a Sub-commission XV-E on “Welded Joints in Tubular Structures”.
Now renamed simply “Tubular Structures”, the principal activities of this active sub-commission in recent times have been: (i) developing international standards; and (ii) organizing international symposia. Volunteer technical specialists serving on IIW XV-E study and synthesize technical information on tubular steel structures and periodically produce state-of-the-art design recommendations through IIW Commissions XV and XIII on the topic of static and fatigue strength of hollow section joints/connections. Through IIW’s role as a recognized ISO standardization body, two principal international standards have been developed and maintained by IIW XV-E:
1. ISO 14346, “Static design procedure for welded hollow-section joints – Recommendations”, International Standards Organization, Geneva, Switzerland, 2013;
2. ISO 14347, “Fatigue – Design procedure for welded hollow-section joints – Recommendations”, International Standards Organization, Geneva, Switzerland, 2008.
In addition to standardization activities, IIW XV-E has, since 1984, organized the “International Symposium on Tubular Structures” (ISTS) at various venues around the world on an approximate 2.5-year cycle. This conference has become the principal international forum for discussion of research, developments and applications in the field of onshore tubular structures. Fifteen of these symposia have been held to date, with the next scheduled for December 2017 in Melbourne, Australia”.
The current Chair of IIW Sub-commission XV-E is Professor Thomas Ummenhofer of Karlsruhe Institute of Technology, Germany