Furniture is shifted and objects fall from shelves in large numbers. Heavily damaging Many people find it difficult to stand. Many houses have large cracks in walls. A few well built ordinary buildings show serious failure of walls, while weak older structures may collapse. IX Destructive General panic.
Many weak constructions collapse.
Very destructive Many ordinary well built buildings collapse. Most ordinary well built buildings collapse, even some with good earthquake resistant design are destroyed. XII Completely devastating Almost all buildings are destroyed.