筋交い(すじかい)とは?【建築用語・土木用語・大工用語】 筋交いとは、建物の耐震性を高めるために、柱と柱の間に斜めに取り付ける補強材のことをいいます。 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