To secure sufficient strength by providing an installation portion installed on a foundation, an insertion portion that is inserted into a slit at the lower end of a column and fixed by a fixing member inserted from the side of the column, and a connection portion that connects the installation portion with the insertion portion.

Connector is attached to a sill 21 by placing a spacer 41 on an installation portion 31, inserting a connecting bolt 33 into a bolt insertion hole 23, and screwing a nut 36. The sill 21 is placed on a continuous footing 20 so that the installation section 31 may be installed on the top face of the continuous footing 20. In addition, the insertion section 32 is rotated and the connecting hardware 20 is fixed to the sill 21, a bearing column 22 is erected on the sill 21 by placing a slit 24 on the insertion portion 32. And the bearing column 22 and the sill 21 are connected together by fitting pin insertion holes 26 into pin insertion holes 37, driving drift pins 55 thereinto, and fixing the bearing column 22 to the insertion section 32. Therefore, the strength of the connection is made clear and helps secure sufficient strength.