To provide a mounting hole forming implement for easily forming a mounting hole when placing concrete.
The mounting hole forming implement 1 disposed in a form 60 and removed after placing concrete 65 to form the mounting hole for a post includes divided pieces 3 dividing a cylinder body 2 corresponding to the mounting hole 64, into a plurality of pieces; a positioning means 19 positioning a core member 4 and the divided pieces 3; bar bodies 23 adjusting the spacing of the core member 4 and the divided pieces 3 so that abutting parts 13 of the divided pieces 3 abut on the other side inner surfaces of the adjacent divided pieces 3; and a cover body for blocking the lower part of the cylinder body 2. The core member 4 is inserted inside, and the divided pieces 3 are arranged in cylinder shape by the positioning means 19. The abutting parts 13 of the adjacent divided pieces 3 are allowed to abut on the other side inner surfaces of the divided pieces 3 by the bar bodies 23 to assemble the cylinder body 2. After the lower part of the cylinder body 2 is blocked with the cover body, the mounting hole forming implement 1 is disposed in the form 61 and the concrete 65 is placed in the form 61.
Masayoshi Yoshida
Hiromitsu Imaeda
Umemura Hiroaki