Technical note TN006, Update for ‘Design of structural steel hollow section connections—Vol 1 Design models’, first edition 1996 by A.A. Syam and B.G. Chapman. The 1996 publication is under consideration for updating by the Australian Steel Institute. Since this is likely to be a lengthy process, this Technical Note has been prepared in order to advise of known Errata and of more up-to-date information that could be used by structural engineers in the interim for some sections of the publication. Version 2, June 2011.