or New Earthquake Resistant Building Standard Amendment.
Damage from the 1978 Miyagi Earthquake with a magnitude of 7.4 led to this new revision. The earthquake resistance definition is as follows:
For the often occurring mid-size earthquakes (magnitude 5~7), the building should suffer no more than a slight amount of cracks and should continue to function as normal. For the rare and large earthquakes with a magnitude 7 or higher and a Shindo scale of upper 6 or higher, the building should not collapse.