Observed performance of industrial pallet rack storage systems in the Canterbury earthquakes

  • S. R. Uma GNS Science, Lower Hutt, New Zealand
  • Graeme Beattie BRANZ Ltd, Porirua, NZ

Abstract

In Christchurch, the industrial sectors with storage facilities incurred heavy economic loss due to the collapse of pallet rack systems and loss of contents during the recent the Darfield (2010) and Lyttleton (2011) earthquakes. The failure of such systems could be attributed to various reasons including inadequate design, inappropriate operational conditions, improper installation and lack of maintenance. This paper describes possible sources of damage in pallet racks due to earthquake action, which eventually could trigger the collapse failure mode of the storage system during a severe aftershock.

Various racking manufacturers and retail owners were consulted to establish the pre-event condition and loading of the systems and the response of the systems in both ‘publicly accessible’ and ‘industrial’ situations. Investigations by the authors highlighted an apparent lack of consistent national control over the design and construction of racking systems. Progress towards the publication of a revised and extended Design Guide is also described.

References

Beattie, G.J. & Deam, B.L. 2007. Seismic Design of High Level Storage Racking Systems with Public Access. Published by BRANZ Ltd, Porirua, New Zealand.

Beattie, G.J. & Uma, S.R. 2011. A revised guide for the design, construction and operation of high level storage racking systems following the Darfield earthquake. 9th Pacific conference on earthquake engineering, Auckland, New Zealand, NZSEE. Paper. 178. 8 pages

BSSC. 2005. FEMA 460- Seismic considerations for steel storage racks located in areas accessible to the public. Prepared for the Federal Emergency Management Agency, USA.

Davidson, B.J. and McBride, A.P. 2011. Design recommendations for the improvement of the seismic performance of steel storage racks. 9th Pacific conference on earthquake engineering, Auckland, New Zealand, NZSEE. Paper. 65. 8 pages

FEM 10.2.08 document, 2010. Recommendations for the design of static steel pallet racking in seismic conditons. December 2010. Version 1.02. FEM Racking & Shelving Product Group (European Racking Federation), National Metal forming Centre, Great Britain.

RMI 1997. Specification for the design, testing and utilisation of industrial storage racks. Rack Manufacturers Institute. USA

Rossin, I., Calado, L., Proenca, J., Castiglioni, C., Brescianini, J.C., Plumier, A., Degee, H., Negro, P. and Molina, F., 2009. Storage racks in seismic areas. European Commission Report. ISBN 978-92-79-11203-4. 142p.

SEMA: Code of Practice for the Use of Static Pallet Racking. Storage Equipment Manufacturers Association.

Standards Australia. 1993. AS 4084-1993 Steel storage racking. SA. NSW. Australia.

Standards New Zealand 2004. NZS 1170.5- Structural design actions Part 5: Earthquake actions – New Zealand, Standards New Zealand, Wellington, New Zealand.

Published
2011-12-31
How to Cite
Uma, S. R., & Beattie, G. (2011). Observed performance of industrial pallet rack storage systems in the Canterbury earthquakes. Bulletin of the New Zealand Society for Earthquake Engineering, 44(4), 388-393. https://doi.org/10.5459/bnzsee.44.4.388-393
Section
Articles

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