Influence of web members on the in-plane and out-of-plane capacities of steel storage upright frames

Global buckling behaviour, with or without interaction with distortional buckling, of storage rack members is evaluated by tests carried out according to EN 15512 (2009) [1] on compression and out-of-plane bending of upright frame modules. Based on test results for both single upright sections and frame modules, completed by numerical simulation, the present paper attempts to demonstrate that the design buckling strength of uprights can be conveniently estimated by single section tests, providing that the length of these members is calibrated for the distortional–global interaction mode.