Building repair methods and building

摘要

PROBLEM TO BE SOLVED: To obtain a building capable of decreasing or increasing a space after construction.SOLUTION: A building 10 includes: a roof structure 12 that comprises a support 20 and a roof 22 supported by the support 20; an auditorium 14 that is provided below the roof 22; and space-variable means for decreasing or increasing a space formed of the auditorium 14 and the roof 22.