Latest Publications

Description Category Date Author
Practice Note on the Sourcing of Compliant High Strength Structural Bolts

The New Zealand Steel Structures Standard states that high strength structural bolts shall be supplied to AS/NZS 1252. This standard was republished on 23rd December 2016 after undergoing a major revision. The main technical changes incorpo...

MAT1010 Rev 1.pdf
Materials 23/11/2020 Kevin Cowie, Alistair Fussell
Proposed Material Requirements for Category 3 Members in Seismic-Resisting Systems

The Steel Structures Standard material provisions for seismic applications are intended to ensure that the grade of steel chosen can meet the expected inelastic demand in both seismic and non-seismic applications (SNZ, 1997a). This includes...

Materials 03/08/2020 Alistair Fussell, Kevin Cowie, Dr Michail Karpenko, Dr Charles Clifton
The New Zealand Structural Steelwork Specification in Compliance with AS/NZS 5131: Key Elements to Managing the Compliance of Fabricated Structural Steelwork

The Structural Steelwork – Fabrication and Erection standard AS/NZS 5131 (SA/SNZ, 2016c), is cited as an acceptable standard for demonstrating compliance with the Building Code. This standard published in 2016, was developed in respo...

Fabrication 18/02/2019 Alistair Fussell, Kevin Cowie, Michail Karpenko
Practice Note on the Sourcing of Threaded Rod Used for Foundation Bolts

Threaded bars are commonly used in the structural engineering industry. It is used as replacement for long bolts as well as for concrete anchors and foundation bolts.  This product is not covered under New Zealand Standard AS/NZS 1252...

Materials 20/02/2018 Kevin Cowie, Alistair Fussell
Basis for and Implications of Key Changes to 2016 Structural Steel Product Standards

In April 2016, the suite of AS/NZS structural steel product standards were republished (AS/NZS 1163, 3678, 3679.1-2) (SA/NZS, 2016). This paper provides a summary of the key changes, the basis for these changes and interim recommendations u...

MAT1009 .pdf
Materials 01/03/2017 Alistair Fussell, Kevin Cowie, Stephen Hicks, Michail Karpenko
Checklist for Imported Structural Steelwork

The globalisation of the structural steel supply chain has sparked concern over the quality of fabricated steelwork in New Zealand building projects when sourced from low-cost countries. Demonstrating compliance of imported material with th...

Quality 28/06/2016 Alistair Fussell, Kevin Cowie, Dr Michail Karpenko, Dr Stephen Hicks
Ensuring Compliance of Structural Steelwork – Regardless of Origin

This article was first published in SESOC Journal Volume 29 No 1 April 2016. The globalisation of the structural steel supply chain has sparked concern over the quality of fabricated steelwork in New Zealand building projects when source...

Quality 28/06/2016 Alistair Fussell, Kevin Cowie, Dr Stephen Hicks, Dr Michail Karpenko
Welding to AS/NZS 1554.1 of Boron Containing Steel

Recent reports indicate that some imported steel may show elevated levels of boron; traditionally steel in Australia and New Zealand has been made without boron additions.  The welding requirements of AS/NZS 1554 have been established ...

Welding 02/05/2016 Dr Michail Karpenko, Dr Stephen Hicks, Alistair Fussell
Changes to specifying inorganic zinc silicates to AS/NZS 2312

Australian/ New Zealand Standard AS/NZS 2312 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings provides guidelines for selection and specification of coating systems for co...

Coatings 29/04/2016 Kevin Cowie
AS/NZS 5131 – Why Another Fabrication and Erection Standard?

1.0 Introduction  In New Zealand we have the undesirable situation of an aged Structural Steel standard by international standards and we also have two sets of standards provisions that address the minimum requirements for the fabrica...

General 17/04/2016 Alistair Fussell; Dr Stephen Hicks; Dr Michail Karpenko
Paint Coating Selection and Specification: Changes to AS/NZS 2312

Australian/ New Zealand Standard AS/NZS 2312 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings provides guidelines for selection and specification of coating systems for corrosion pr...

Coatings 23/02/2016 Kevin Cowie
Specifying Impact Toughness of Steel Plates for End Plate Connections in Seismic Lateral Resisting Frames

Structures designed to the Steel Structures Standard, NZS 3404, are required to be able to resist collapse under a maximum considered earthquake as directed by the Loadings Standard, NZS 1170.5. Brittle systems are not permitted. The nature...

Materials 27/02/2015 Kevin Cowie; Alistair Fussell
Bolted Column Splices with Minor Axis Bending

In multistory construction columns splices are provided for convenience of fabrication, transport and erection. If required the splices are located just above the floor level, which enables easy access to the joint.   There are two t...

Connections 19/02/2015 Zahid Hamid; Kevin Cowie
Heat Input Limits of Welding Consumables for Earthquake Resisting Structures

The Steel Structures Standard, NZS 3404, references the AS/NZS 1554 suite of standards for compliance of welding consumables. NZS 3404 includes additional requirements limiting the heat input in the deposited weld metal for welds subject to...

Welding 24/04/2014 Alan McClintock; Kevin Cowie
Development and Research of Eccentrically Braced Frames with Replaceable Active Links

Ductile eccentrically braced frames designed in accordance with the New Zealand Steel Structures Standard, NZS 3404, provide life safety during a design level or greater earthquake; however, the eccentrically braced frame active link may su...

Earthquake 24/04/2014 Alistair Fussell; Kevin Cowie; Charles Clifton; Nandor Mago
Welding Consumables and Design of Welds

The Steel Structures Standard, NZS 3404, references the AS/NZS 1554 suite of standards for compliance of welding consumables. New editions of the AS/NZS 1554 suite of welding Standards have recently been published and these refer to newly ...

Welding 28/02/2014 Kevin Cowie; Alan McClintock
Specifying Steel for Seismic Lateral Resisting Frames

There are three common seismic frame types used in New Zealand. These are the eccentrically braced frame (EBF), concentrically braced frame (CBF) and moment resisting frame (MRF). See figure 1. All steel seismic-resisting systems are req...

Materials 27/02/2014 Kevin Cowie; Alistair Fussell
Web Side Plate Rotation Capacity

The Steel Construction New Zealand publication Steel Connect (SCNZ 14.1 and SCNZ 14.2) provides structural engineers with a rapid and cost-effective way to specify the majority of structural steelwork connections, in accordance with accepte...

Connections 18/12/2013 Kevin Cowie; Alistair Fussell
Eccentrically Braced Frames Lateral Restraint of Link Bottom Flange

Eccentrically braced frames are required to be laterally restrained at both the top and bottom of the active link member ends to ensure reliable performance in a seismic event. There are occasions when direct lateral restraint to the botto...

Earthquake 18/12/2013 Kevin Cowie; Alistair Fussell; Charles Clifton
Design of the Linked Column Frame Structural System - A New Zealand Application

The Link Column Frame (LCF) system is a brace free hybrid system combining proven seismic load resisting technology; eccentrically braced frames (EBF) with removable links and moment resisting frames (MRF). It was developed to meet the requ...

Earthquake 04/06/2013 Alistair Fussell, Peter Dusicka, Charles Clifton, Martin Wong
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Pre-Tensioning of High Strength Holding Down Rods

Written by Kevin Cowie on May 2nd, 2008.      0 comments

Holding down bolts are typically threaded rods of varying lengths. Tightening of the hold down bolts to achieve a minimum level of bolt pre-tension eliminates a potential source of undesirable connection flexibility. Such as in column base plate connections in a seismic-resisting system where the frame stiffness will change if the base plate lifts off the footing, as the rigidity of this connection has a significant effect on the behaviour of the seismic-resisting system(s) and the overall building. One option for achieving the necessary pre-tensioning would be to use direct tensioning equipment but this is difficult to calibrate reliability for structural bolts if galvanised. However, a simpler option is to use the part turn concept of NZS 3404. A bolt extension associated with achieving the minimum bolt proof load applied as a specified turn of nut past snug tight. The method modifies the method previously presented in HERA Design & Construction Bulletin No 56. Included in the end of this article is a worked example for determining the calculation of required amount of nut rotation from snug tight. This article provides additional information to ERC1001 High Strength Bolting.
Topics: Coating Erection & Construction

Employment Opportunities on the SCNZ Website

Written by Simon Keown on May 1st, 2008.      0 comments

SCNZ members can now add employment opportunities to their member's pages. An employment search is also available in the careers section of the website. Other additions are the addition of icons to indicate you will take: Gateway School Students and/or STAR School Students,Work experience School Students and/or Modern Apprentices.
Topics: Coating Careers & Training

New Performance Requirements for Seismic Steel

Written by Clark Hyland on May 1st, 2008.      0 comments

Amendment 2 of the Steel Structures Standard NZS 3404:1997 released in October 2007 (SNZ, 2007) sets new requirements for steel materials and welding of seismic resisting steelwork that is required to sustain significant plastic deformation under design earthquake events. These changes relate to the selection of steel materials in Table 12.4 and the selection of welding consumables and weld heat input in cl. In some instances these requirements exceed the provisions in the material supply standards for steel sections to AS/NZS 3679 (SAA/SNZ, 1996), plate to AS/NZS 3678 (SAA/SNZ, 1996) and tube to AS1163 (SAA, 1991) A review of steels currently available in the New Zealand market indicates that most will comply with these requirements.
Topics: Coating Materials

Steel Structures Standard Revision - Construction

Written by Allistair Fussel on May 1st, 2008.      0 comments

The current format of the Steel Structures Standard (SNZ 2007) is to be reconfigured. The standard will be broken into seven parts. The construction part will incorporate material selection, fabrication, corrosion protection and erection aspects of the Standard (SNZ 2007).
Topics: Coating General

Proceedings of the Sustainable Steel Construction Seminars April 2008

Written by Clark Hyland & Micheal Sansom on May 1st, 2008.      0 comments

At the beginning of April, 2008, Steel Construction New Zealand Inc., (SCNZ) ran seminars in Auckland, Christchurch and Wellington under the theme ‘Sustainable Steel Construction’. The guest speaker was Dr Michael Sansom, senior manager of the Sustainability Group of the U.K.’s Steel Construction Institute. He was joined by the Secretary Manager of SCNZ, Clark Hyland. These proceedings which outline the main messages delivered at the seminar series were compiled by Roy Kane
Topics: Coating Environment

High Strength Structural Bolting

Written by Clark Hyland on May 1st, 2008.      0 comments

High strength structural bolting offers significant benefits to erection of structural steelwork. It is relatively quick and can be executed on site in all sorts of conditions. However to achieve reliable structural performance the quality of the bolt assemblies and the installation procedures need to be appropriately controlled. This article summarises the key aspects of high strength structural bolting that need to be understood by those specifying, purchasing and installing these bolts.
Topics: Coating Erection & Construction

Preventable Coating Defects

Written by Raed El Sarraf on May 1st, 2008.      0 comments

This article identifies some preventable coating problems noticed on 7 year old coated steel structural elements. The steelwork is located a couple of kilometres from the sea within an Atmospheric Corrosivity Category (ACC) at the high end of D. The ACC was determined from Table 4.1 of AS/NZS 2312 (SNZ, 2004) and Section 4 of NZCCG (Clifton and El Sarraf, 2005).
Topics: Coating Coatings