So a few nights ago my partner and I heard a few extremely loud bangs coming from the house. It was late at night, and hard to pinpoint but it sounded like someone dropping a whole frozen chicken on the floor. We're in Minnesota and we have had record cold, as well as record snow this year.
Few days later, I noticed several large cracks in one of the floor joists in the basement ceiling that I'm 98% sure were not there before. All of the information and videos I've found (Some here on This Old House) show cracked joists that are split right where they join at a load baring beam, but these are all in the middle.
My question is, do I need to get a structural engineer out here to take a look at all this? Is this normal? (I'm guessing no) and How worried should I be?
House was built in early 60s. This particular joist we believe was installed as part of a remodel in 2005 by previous owners.