This paper deals with the use of light stiffeners to prevent elastic instability
in the walls of rectangular planform steel silos and offers advice about their
most effective use. It shows that significant potential material savings can be
achieved if reduced silo wall thickness is used with torsionally stiff ring
beams or with stiffeners placed on the surface of the plate to increase flexural
stiffness. Vertical stiffeners are more effective than horizontal stiffeners in
resisting elastic buckling.
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