鉄筋勉強会第３回目その１土間配筋 toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen> 鉄筋勉強会第３回目その２躯体配筋（柱） toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen> 鉄筋勉強会第３回目その３躯体配筋（壁） toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen> 鉄筋勉強会第３回目その４躯体配筋（梁） toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen> 鉄筋勉強会第３回目その５鉄筋工事必要道具 toplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture” allowfullscreen>
