I had an "oh sh!t" moment a couple of years ago. I was clearing a 60 foot red pine from a neighbor's yard. The tree was tall and straight, and I figured I could hinge it to make it swing away from the house. Well, what I didn't calculate was the temperature effect on the wood. On that particular day, the air temp was about -10F, and frozen wood snaps. My hinge snapped with a thickness of a couple of inches. The tree turned just enough that the top of the tree landed about 5' from the picture window. I was lucky!