willie-mandeno-opus

AS/NZS 2312 update now published!

It’s with great excitement that Opus International Consultant and NZ representative on Joint Technical Committee MT-014/02 can report that the long-awaited revision to the 2002 ‘Guide to the Protection of Structural Steel Against Atmospheric Corrosion by the Use of Protective Coatings’ was published last Friday 19 December. The revision is now in three Parts: AS/NZS…

stainless-steel-postweld

Resource – Specifying roughness of welded stainless steel surfaces

Surface roughness is a measure of the texture of a surface. It is quantified by the vertical deviations of a real surface from its ideal form. If these deviations are great, the surface is rough, if they are small, the surface is smooth. The roughness of a surface has most commonly been measured by an…

multi-storey-buildings

Notice – Standard to help comply with new regulations for building work

New consumer protection regulations for building work costing $30,000 and over are expected to take effect from 1 January 2015. Acting Chief Executive of Standards New Zealand Michelle Wessing said the New Zealand standard 3902 Housing, alterations and small buildings contract will help meet the new regulations and makes the building process smoother and easier…

publication-book-edition

Notice – New edition of AS/NZS 1554.1 now available

This month the 2011 edition of our most widely-used welding standard AS/NZS 1554.1 was superseded by the published 2014 edition. The expectation is that the new edition of the standard will now be implemented by all users. Standards are periodically reviewed to ensure they are up-to-date with developments in technology, to take account of changes…

history-displacement-failure

Notice – Fire resistance of unprotected concrete filled hollow steel columns

The fire design of steel-concrete composite columns using concrete filled tubes to EN 1994-1-2:2005+A1:2014 (Eurocode 4) is seemingly a simple task, assuming that the temperature distribution of the cross-section is conservatively known. Reading the rules in the section that deals with the structural behaviour and evaluation of the resistance to axial compression, one gets the…