Therefore, whether complicated or not, it is recommendable to use "So" (tier) or "Ju" (tier) indicating the number of roofs in appearance and "Kai" (story) indicating the number of internal floors, to be laid side-by-side like '-So (tiered) -Kai (story)' and '-Ju (tiered) -Kai (story) (Example: Three-tiered, five-story).
そのため、複雑であるかどうかにかかわらず、外観での屋根の数を表す“層”または“重”と、内部の床数の“階”とを並べて、「-層-階」や「-重-階」とするのが好ましい（例：3重5階）。