I found a main carrying beam that had been cut.
It appears that it may have been cut to make way for a stairway, and partition wall.
The cut end is sitting on two 2"x 6". These are nailed to a third 2" x 6" that runs up past the end of the beam. The bases of the post are on the poured concrete floor.
The rest of the supports are lally columns.
The home is a 24’ x 38’ ranch.