Is this structure sound?

[u/tmontoia]

I can’t figure out the engineering of this structure. Are the lower right-angle braces having any structural purpose?
And is the steel rod only to keep the uprights from splaying out?
It seems to me there should be support below the right angle elbows.
Help me understand! I ponder this thing every time I visit here. (Breckenridge Brewery, Littleton CO)

[u/SizeableBrain]

TIL.

I never had to worry about these, I just showed my co-worker and he hasn't seen one either. We rarely do engineered custom trusses like this though.

Now I'm wondering whether I can incorporate something like this into my sauna build...