The I.D.S. Construction method was the first in Japan to acquire the approval of the Minister of Land, Infrastructure and Transport in regards to the framework required in terms of structural strength after the revision of the Building Standards Act in 2000 and has been recognized as having a performance of a "wall ratio of 5.0," which is the highest strength established by the government. There are no "bearing walls" with a strength that exceeds this in the regulations!
-Patent No. 2753975 (Acquired on March 6, 1998)-
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