We found it behind a wall, it is a bit more than 10 inches wide it has about an 3/4 inch of concrete between metal.
It was jaggedly broke off on the bottom in the basement ceiling. It is also jaggedly broken off in the attic, it looks like it used go through the roof, because there is patch there. It does not seem to be supported by anything. it is almost in the middle of the house. It is not near much plumbing or anything.
It seems really heavy duty and does not seem to have any connections. What was it for? Could this be a problem in the future? Could it fall? Could someone have messed with the structural integrity of the house?