The proper plural would be stratagem, but there was a great Einsturzende Neubauten album called Stratagies Against Archatecture, hence the title.
So I was looking at the ceiling of this bar that I find myself in and noticing the way that the beams are structured. I think that it is a function over for with the cross beams coming up at a roughly 45 degree angle to support the flat roof above. A peak roof would be actually easier to build and maintain, but a flat roof is cheaper I guess. It also allows you the freedom to go up later if such a thing is desired.
I guess there is a reason it happens, there is a reason why people do the things that they do. They really don't need some special meaning.
If you have a special meaning in your construction that gets you to a new level. I would like there to be a special meaning in things that I build, but most of the time I end up with a straight wall, no excitement, no expression.
I suppose I would use the 45 degree boards to run stiffen the frame if I were building this place too, function over form.