杭打ち地業(くいうちじぎょう)とは?【建築用語・土木用語・大工用語】 地盤が弱い場合に、杭を打ち込んで構造物の過重を支持させる地業のこと。地盤が強い場合は、捨てコンクリートだけを打つこともあります。 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