Terms of the Trade: What Is the Frost Line? Terms of the Trade: What Is the Frost Line?
The frost line refers to the maximum depth at which soil will freeze and swell during the winter seasons. This line influences major construction projects, as pipes placed above the frost line are prone to bursting and cracking. The frost line will vary depending on what part pf the country you are in, so it is important to research your area before taking on any major projects.