Limited research has been conducted in the area of cold-formed steel lipped channel column with distortional and global buckling interaction.
The ultimate load carrying capacity of the pin-ended cold-formed steel lipped channel column was significantly reduced due to interaction of distortional-global buckling mode.
It is found that the current design rule in Direct strength Method over predict the ultimate capacity of lipped channel column under going interaction of distortional-global buckling mode.
Silvestre et al  conducted parametric studies to assess the performance of DSM for lipped channel columns affected by local-distortional interaction.
The DSM design strengths are unconservative for all channel columns.
It shows that design procedure accounting for interaction of distortional and global buckling for lipped channel columns was required.
is to be applied to the ultimate strength of cold-formed steel lipped channel columns calculated by DSM to account for the sections undergoing distortional-global mode interaction.
3 m, measured on the horizontal exhaust channel column
shaft height up to floor level.
Compared to typical racking, the pallet rack, constructed of hot-rolled structural channel column
with full horizontal-diagonal bracing, offers greater frame strength, durability and cross-sectional area.
Compatible with automated storage and retrieval systems (AS/RS), both rack systems feature all-welded steel construction, welded load bearing plates with floor anchors, structural channel columns
and load beams for enhanced strength over roll-form style racking.
The main channel columns
are slightly larger and flared at the base.
Structural channel columns
and load beams are strongest in the corners and sides where more steel is concentrated.