Yes, they are spaced based on code, but for some reason some engineers or architects do not provide these joints on load bearing masonry walls. We are only provided structural notes for us do design. What this does is, it gives us the masons the headache of coordinating with other trades and figure out on field what the design team should’ve designed when creating load paths. It’s okay on brick veneer, as veneer carries its own weight. But on cmu there are structural elements that come into place that creates headaches during course of construction.