I have a basic question on a building for construction of a layout.  It is a very basic and maybe simple question.  If a person was building an approximately 3000 SF building for a layout, is it better to have a building that is say 150 feet long and 20 feet wide or a building that is 75 feet long and 40 feet wide.  It would seem the only reason to have benchwork curving all over in a building is because the building is not long enough to have a long run.  It would seem to make sense to have as long a straight run as possible for operations, scenery, etc.