唯一の既製品であるユニットバスの取り付け作業です。

部材ごとに運び込んで組み立てます、写真は丈夫な金属製の床を支える下地部分です。

It is installation work of the unit bus which is the only ready-made item.

We carry it in every member and assemble it, the picture is a base part that supports a strong metal floor.