Apologies for the confusion.
In total it is assumed to have 4 wingplates. With the horizontal arrow I referred that there is an additional wingplate on this side.
There is only one uplift force which is applied in the centre of the column.
Good afternoon engineers!
I am struggling with understanding the concept of the hand calculations for the case shown in the attachments.
In short, there is a structure which is located on sea transport. Each column of this structure has a welded to it endplate which is locked to the grillage...