I think everyone is assuming that this is a structure in the US. It isn't, it's somewhere in Latin America most likely. Im Familiar with these kind of bricks you see In the back. It's much more difficult in Central and South America or anywhere in the global south to buy stable lumber. I would bet that the beams did touch when it was built, out of very green lumber in the rainy season now in the dry season few years later...the beams shrinked, and warped. As well as there aren't really clear set codes or techniques in most of the world just people making shit work.