Latest Publications
Description | Category | Date | Author |
Fire Design and Serviceability Issues - Metal Deck Slabs subject to Concentrated Loading
The material in this paper draws on previous SCNZ and HERA reports (Fussell et al 2006, Barber and Clifton 1994 and Clifton 2006) which cover the ultimate limit state design of metal slabs subject to concentrated loading and fire engineerin... CMP1006.pdf |
Composite | 08/02/2010 | Alistair Fussell; Clark Hyland; Charles Clifton |
Welded I Sections Seismic Category Classification
All steel members which form part of a seismic resisting frame are classified into one of 4 categories for the purpose of seismic design. Category 1 members are capable of sustaining high displacement ductility demands. Category 2 members a... MEM1002.pdf |
Member Design | 22/12/2009 | Kevin Cowie; Alistair Fussell |
Hot Rolled I Sections Seismic Category Classification
All steel members which form part of a seismic resisting frame are classified into one of 4 categories for the purpose of seismic design. Category 1 members are capable of sustaining high displacement ductility demands. Category 2 members a... MEM1001.pdf |
Member Design | 22/12/2009 | Kevin Cowie; Alistair Fussell |
Lateral Restraint of Yielding Regions in Columns and Beams in Multi-Storey Buildings
This article provides general guidance on applying the lateral restraint provisions for yielding regions given in Clause 12.6.2 of NZS3404 (SNZ, 2007) to columns and beams of multi-storey buildings. It includes simplification of those provi... MEM2001.pdf |
Member Design | 16/12/2009 | Charles Clifton |
Steel Performance in the Padang Earthquake 2009
A M7.6 earthquake, with depth 80 km, occurred near Padang City, Sumatra, Indonesia on September 30, 2009. The overwhelming majority of the buildings damaged were reinforced concrete frames with unreinforced brick infill panels, reflecting t... EQK1001.pdf |
Earthquake | 30/10/2009 | Clark Hyland & Scott Miller |
Transverse Slotted Holes Design Bearing Strength
No distinction is made in the Steel Structures Standard NZS 3404 (SNZ, 2007) between the design ply bearing capacity for a long slotted hole in which the slot is perpendicular to the direction of the bearing load and a standard circular hol... CON3001.pdf |
Connections | 27/10/2009 | Kevin Cowie |
Steel Corrosion Rates in Water and Soil
Guidance on typical corrosion steel rates in water and soil for design use is provided in the recently published NZS3404.1 Steel Structures Standard - Materials, Fabrication, and Construction (SNZ,2009). The design rates given are those to ... CTG1006.pdf |
Coatings | 20/10/2009 | Kevin Cowie |
Semi-Rigid Sliding Hinge Joint
The Sliding Hinge Joint (SHJ) is a new semi-rigid joint system developed for moment resisting steel frames. It has the ability to remain rigid under in-service conditions or ultimate state wind loading, and to rotate under severe earthquake... CON1101.pdf |
Connections | 26/08/2009 | Kevin Cowie |
CHS Collar Joints
This article presents a method for designing the collar joints of a moment connection between an I section beam and a circular hollow section (CHS) column. The procedure is developed principally for the semi-rigid flange bolted joint (FBJ).... CON1002.pdf |
Connections | 26/08/2009 | Kevin Cowie |
Moment End Plate - Column Side
Standard moment end plate connections (MEP) have been developed by Steel Construction New Zealand Inc. The design procedures are presented in Structural Steelwork Connections Guide: Design Procedures, SCNZ 14- 1:2007 (Hyland et al, 2008). T... CON1001.pdf |
Connections | 26/08/2009 | Kevin Cowie |
Maximum Spacing of Thermal Movement Joints
Although buildings are often constructed using flexible materials, roof and structural expansion joints are required when plan dimensions are large. The maximum distance between expansion joints is dependent upon many variables, including a... GEN3001.pdf |
General | 03/07/2009 | Kevin Cowie |
Properties and Assessment of Historical Structural Steelwork
The refurbishment or ‘adaptive re-use’ of existing buildings currently forms a significant part of the workload for many architects and engineers. The structural engineer will be required to make an app... MAT1005.pdf |
Materials | 03/07/2009 | Kevin Cowie |
Sleeved Holding Down Bolts
One of the greatest problems faced by a steel erector on site is inaccuracy in the locations of the anchor bolts. Precision surveying equipment and techniques are required to accurately set out solidly cast-in anchor bolts in accordance wit... ERC1004.pdf |
Erection & Construction | 29/06/2009 | Kevin Cowie |
An Introduction to Network Arch Bridges
This article provides an introduction to network arch bridges and is an excerpt from (Chan and Romanes 2008). BRD3001.pdf |
Bridges | 29/04/2009 | Michael Chan & Raed El Sarraf |
Extending High Tensile Anchor Rods with Couplers
There are instances where high tensile anchor rods have been cast in with insufficient projection above the concrete. Extending the anchor rods by welding is generally not permitted. One method to extend the anchor rod is by the use of a th... ERC1003.pdf |
Erection & Construction | 27/04/2009 | Kevin Cowie |
Fire Rating Questioned on Post Tensioned and Prestressed Concrete Slabs
A recent United Kingdom fire test of a post tensioned slab designed for a 2 hour fire rating achieved only a 66 minute fire resistance. Spalling began after 11 minutes and after 20 minutes spalling exposed the tensioning ducts which resulte... FIR1002.pdf |
Fire | 21/04/2009 | Kevin Cowie |
NZS3404.1 Steel Structures - Materials, Fabrication and Construction
New Format of NZS 3404 The steel structures standard is being separated into seven inter-related parts as follows. The first part, NZS3404.1 is due for release mid-2009: NZS 3404.1 Steel structures – Materials, fabricatio... GEN2002.pdf |
General | 21/03/2009 | Clark Hyland |
Deep Rafter Stability
The New Zealand Steel Structures Standard (SNZ, 1997), in keeping with many international design standards has no minimum stiffness requirement for restraints systems preventing flexural-torsional buckling of steel sections bent about their... MEM3601.pdf |
Member Design | 17/03/2009 | Allistair Fussel |
Primers for Steel: Their Purpose and Performance
This article addresses some problems that can occur when primers are incorrectly specified, and examines some misconceptions on their expected performance. Costly remedial rework can be incurred if a shop primer is damaged or exposed to ext... CTG1005.pdf |
Coatings | 12/02/2009 | Michael Williams |
Fire Engineering Design and Steel Standard Revision
This article gives recommendations for Alternative Design methods for fire engineering of common types of multi-storey steel structures. These are Alternative Designs because they do not follow 100% the Compliance Document for Fire Safety, ... FIR1001.pdf |
Fire | 12/02/2009 | Charles Clifton |