束石(つかいし)とは?【建築用語・土木用語・大工用語】 床下の過重を支えるための石。床束の土台として利用されます。石製もありますが、主流はコンクリート製です。 Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window