FREELY OPENING FLOOR STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a floor structure having, such structure that can be diverted to an exhibition hall allowing an exhibit passing through a story layer to exhibit quickly and as required and can be restored to an original office space after the exhibition is over. SOLUTION: Detachable opening floors 2a, 3a are provided on a floor of a building 1, and the opening floors 2a, 3a are formed by precast concrete board having a two step structure.