A house, 5 meters wide and 12 meters long, with stairs in the middle and stairs on the left and right sides. The stairs don't step on the center line, the center line is in the middle of the stairs. .

A house, 5 meters wide and 12 meters long, with stairs in the middle and stairs on the left and right sides. The stairs don't step on the center line, the center line is in the middle of the stairs. ... It is suggested not to set stairs in the middle of the building, if nothing else, just the air will flush. If you open a skylight (transom) in the middle, you can imagine that the airflow is more intense. If it is necessary to do this, it is suggested that the stairs change direction, and the stairs should be covered with mirrors or screens. Stairs are best set against the wall. I hope I can help you.