大引き(おおびき)とは?【建築用語・土木用語・大工用語】 大引き(おおびき)とは、根太(ねだ)や床板を支える横材のことで、1階部分を支える大切な役割を持っています。大引きの下には床束や基礎が敷かれています。 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