This report presents a study of the capacities of steel rack frames based on linear analysis (LA), geometric nonlinear analysis (GNA) and geometric and material nonlinear analysis (GMNIA). In the case of linear and geometric nonlinear analyses, the design is carried out to the Australian cold-formed steel structures AS/NZS 4600. The report provides evidence to support the use of advanced geometric and material nonlinear analysis for the direct design of steel rack frames without the need for checking section or member capacities to a structural design standard. University of Sydney School of Engineering Research Report R908, April 2010 by K. J. Rasmussen and P. Gilbert.
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