鉄筋勉強会第1回目その１地下躯体工事 toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen> 鉄筋勉強会第1回目その２揚重機と躯体の部位 toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen> 鉄筋勉強会第1回目その３墨出しと柱壁鉄筋の組立 toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen> 鉄筋勉強会第1回目その４柱壁梁スラブ型枠・鉄筋の組立と検査 toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen>
