As far as I know, fresh foundation concrete has a high content of water. That settle in the first year or so. So that leave a gap in the content of your foundation, so you'll see some normal cracks. Also, the foundation will move just a little bit too. I have draining sand around and still, the foundation moved just a little bit in the first year or so, so I saw one crack at each side of the foundation (more open in the high end, more closed in the low end). |