鉄筋勉強会第2回目その1地下躯体工事のおさらい toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen> 鉄筋勉強会第2回目その2鉄筋と基本の構造 toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen> 鉄筋勉強会第2回目その3基礎配筋の概要と鉄筋の搬入 toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen> 鉄筋勉強会第2回目その4各部位の配筋 toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen>