Do basement support columns need to be attached at the top
Yes, for sure…
Only if you don’t want them knocked loose. LOL Definitely secured top and bottom.
FWIW, I rarely see them attached around here.
With lag screws not nails.
regardless if no movement was observed
unless those columns & brackets can be shown to be approved
i’d pass these off to an S.E.
that whole install looks amateurish at best
Lag screws only. Not nails, like John said. The base must be in cement. No wood blocks at the bottom.
Nice pics, Marcel…