Pre-Tensioning of High Strength Holding Down Rods
Written by Kevin Cowie on May 2nd, 2008.
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Latest Publications
| Description | Category | Date | Author |
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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... MAT2002.pdf |
Materials | 03/08/2020 | Alistair Fussell, Kevin Cowie, Dr Michail Karpenko, Dr Charles Clifton |
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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... FAB2001.pdf |
Fabrication | 18/02/2019 | Alistair Fussell, Kevin Cowie, Michail Karpenko |
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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 underwent a major revision and was published on 23rd December 2016. The major technical changes incor... MAT1010.pdf |
Materials | 20/03/2018 | Kevin Cowie, Stephen Hicks, Raed El Sarraf |
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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... MAT1011.pdf |
Materials | 20/02/2018 | Kevin Cowie, Alistair Fussell |
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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 |
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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... QLT1002.pdf |
Quality | 28/06/2016 | Alistair Fussell, Kevin Cowie, Dr Michail Karpenko, Dr Stephen Hicks |
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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... QLT1001.pdf |
Quality | 28/06/2016 | Alistair Fussell, Kevin Cowie, Dr Stephen Hicks, Dr Michail Karpenko |
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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 ... WEL1003.pdf |
Welding | 02/05/2016 | Dr Michail Karpenko, Dr Stephen Hicks, Alistair Fussell |
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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... CTG1009.pdf |
Coatings | 29/04/2016 | Kevin Cowie |
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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... GEN2003.pdf |
General | 17/04/2016 | Alistair Fussell; Dr Stephen Hicks; Dr Michail Karpenko |
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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... CTG1008.pdf |
Coatings | 23/02/2016 | Kevin Cowie |
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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... MAT1008.pdf |
Materials | 27/02/2015 | Kevin Cowie; Alistair Fussell |
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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... CON3102.pdf |
Connections | 19/02/2015 | Zahid Hamid; Kevin Cowie |
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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... WEL3001.pdf |
Welding | 24/04/2014 | Alan McClintock; Kevin Cowie |
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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... EQK1005.pdf |
Earthquake | 24/04/2014 | Alistair Fussell; Kevin Cowie; Charles Clifton; Nandor Mago |
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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 ... WEL1002.pdf |
Welding | 28/02/2014 | Kevin Cowie; Alan McClintock |
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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... MAT1007.pdf |
Materials | 27/02/2014 | Kevin Cowie; Alistair Fussell |
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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... CON1201.pdf |
Connections | 18/12/2013 | Kevin Cowie; Alistair Fussell |
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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... EQK1009.pdf |
Earthquake | 18/12/2013 | Kevin Cowie; Alistair Fussell; Charles Clifton |
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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... EQK1010.pdf |
Earthquake | 04/06/2013 | Alistair Fussell, Peter Dusicka, Charles Clifton, Martin Wong |
Comments
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 protection of structural steelwork. The designer can choose from a selection of systems based on exposed service life to first maintenance for various environments. AS/NZS 2312 has recently undergone a major update. Galvanizing and metal spraying have now become separate standards. A short summary of the major changes to AS/NZS 2312 and use of the standard is provided.