When we used a conventional method about the “specific ceiling” because it is necessary to secure a performance established in Ministry of Land, Infrastructure and Transport technical standard, it was necessary to attach many braces. Therefore the conventional method was very difficult to plan the building equipment. The coauthor developed the new earthquake-resistant technique of the “specific ceiling” using a light weight steel frame established in Japanese Industrial Standards. It is the system which we named “Linear brace” and can secure very high rigidity and strength. It was recognized that the earthquake-resistant performance of the ceiling was largely improved.
