Mounting base

A mounting base that is installed at a predetermined position of a new or existing concrete structure, said mounting base being formed from:

• a plurality of bolts that are inserted into bolt hole openings in said concrete structure, the bolts having fixed end portions fixed to the concrete structure and free end portions that upwardly extend from the concrete structure;
• a foundation that is upwardly spaced away from a top surface of said concrete structure at a predetermined interval;
• a cover that is installed on said foundation;
• a frame material that is provided between an outer circumferential edge of said foundation and said concrete structure that blocks a gap between the concrete structure and the outer circumferential edge of the foundation;
• and a cement cured object that is filled into a space surrounded by said concrete structure, said foundation and said frame material, wherein
• said foundation has a bottom plate facing said concrete structure and a hollow tubing material that upwardly extends from said bottom plate, wherein free end portions of the bolts are inserted into bolt hole openings in said bottom plate and fixed to the bottom plate with a specific fixing means, and fixed end portions of the bolts are fixed to said concrete structure with a specific fixing means, and a portion of the free end portions of the bolts that extends between said concrete structure and said bottom plate is integrated with the cement cured object filled into said space, and said cover blocks an opening at the top of said tubing material, wherein
• the opening at the top of said tubing material is blocked by said cover just after filling the cement cured object into said space and prior to completion of a curing period of the cement cured object, the curing period of the cement cured object starts after the opening at the top of said tubing material is blocked by said cover, and a portion of the free end portions of said bolts that extends between said concrete structure and said bottom plate is integrated with said cement cured object after completion of said curing period,
• wherein said bottom plate has a first portion that internally extends in a radial direction of said tubing material and a second portion that externally extends in a radial direction of said tubing material, wherein said bolts are inserted into bolt hole openings in the second portion of said bottom plate and inserted into bolt holes of said concrete structure facing said second portion, and the free end portions of the bolts are fixed to said second portion with said fixing means and the fixed end portions of the bolts are fixed to bolt holes of said concrete structure facing said second portion with said fixing means, and said frame material is provided between the outer circumferential edge of the second portion of said bottom plate and said concrete structure that blocks a gap between the concrete structure and the outer circumferential edge of the second portion, and a portion of the free end portions of the bolts that extends between said concrete structure and the second portion of said bottom plate is integrated with the cement cured object filled into said space.