| 摘要 |
PROBLEM TO BE SOLVED: To provide an RC rack bottom form which can be easily installed and removed even in the case where a gap height from a top end of a base to a bottom face of an RC rack is low and a distance between aseismic base isolation bearings is long, and in which construction cost can be reduced.SOLUTION: When installing an RC rack 22 floated from a top end of a base 20 over a pair of aseismic base isolation bearings which are disposed on the top end of the base 20 while being spaced apart from each other, an RC rack bottom form 1 is disposed between the pair of aseismic base isolation bearings to form a bottom face of the RC rack 22. The RC rack bottom form 1 is formed from a plate-like bottom form body 2 and a supporting 3 formed from a bolt mounted to a bottom face of the bottom form body 2 in a height adjustable manner. The bottom form body 2 includes a rectangular bottom plate part 4 and a rib 5 protruding from a bottom face of the bottom plate part 4 along a separating direction of the aseismic base isolation bearings. The supporting 3 is mounted to a female screw part 7 which is provided on the bottom face of the bottom form body 2, in the upper end thereof in a height adjustable manner and the lower end face thereof is a spherical convex surface. |
