We live in a house built in 1978-79, designed with an atrium in the family room. The atrium has 4 post and double sun roof window at the roof line. During settling, if think, the 4 post are showing an enormous amount of stress; i.e. spliting. The box or the flooring goes through the floor; i.e. in the crawl space with concrete bottom.

How can we change out the post, secondly, how can we close in the box where its all one floor instead of a box? Can you advise.

Thanks so much.