Corner cracks, also called wedge cracks, are common on slab foundations in the southeast Texas area. They are generally not considered structural and are not an indication of a cracked slab. In researching for this article, we found a great YouTube Video by Houston professional structural engineer R Michael Gray. Rather than re-invent the wheel in this case we’ve decided too re-direct you to the professional. Michael Gray as several interesting videos on his channel. To understand this particular issue, review the video below.