Cracks In Basement Floor. It occurs when the soil freezes and then thaws resulting in an expansion and a shift underneath the foundation of the house. Newly poured concrete shrinks when it dries.

These are quite common. Basement floors crack for a many reasons. Floor cracks occur for a few different reasons but hinge on the point that this is a large and thin concrete slap thin compared to how wide and long it is.
Concrete cracks for several different reasons the most common reasons for a basement floor to crack are.
Concrete cracks for several different reasons the most common reasons for a basement floor to crack are. The shrinkage tends to pull the concrete apart. As a result as dirt settles and compresses under your home the concrete will settle with it. It occurs when the soil freezes and then thaws resulting in an expansion and a shift underneath the foundation of the house.