Necessity for anti-earthquake reinforcement

Facts for building in Japan:

There has been more than 1,000,000 buildings with insufficient reinforcement in Japan.
Current Building Standard Law on anti-earthquake resistance has been amended in 1981 learned from the severe earthquake damage. Buildings built before 1981 are called “Pre-anti seismic resistance”, and “New anti seismic resistance”.

Liability for damages for building owner by collapse of building