Your reference would be similar to my understanding Marcel, span divided by X and joints at prescribed locations, but I don’t have much experience with such. I’d have to look if it’s a code thing here in CA but I see just about 0% of beams being that of built up. For a lot of stick built construction, Paralam PSLs are super common where covered / behind WRB and either steel or good ole dimensional lumber for decks/covers or where exposed. Having seen enough water damage, I’ve asked design pros to incorporate some statement about moisture damage or allow for dimensional lumber in moisture prone locations… most won’t, and I’ll put something in writing to customer (above windows or where a PSL may be at outer / exterior at base of a structure).
Hope you’re doing well 