We are building a home (6500sq.ft, 2 story + basement). We’re about done with 4 way - but we noticed the other day what seemed to be excessive cracking in the floor.
Builder has looked at it (so he says), and does not think it’s a big deal. Here are some pictures, and a video.
Should we be concerned? Keep in mind, most/all of these pictures are in different parts of the basement, and this is not all of them.
Here’s a quick video, around 50-55 seconds in, I stomp on it and a bunch of dust comes up from it, but you can see how it’s all connected when I stomp on it: