Yoav Harpaz
Consulting & Establishing
Community Infrastructure for Emergency
Earthquakes
Grade I - Imperceptible
Not perceptible, except through instruments.
Grade II - Diagnosed
Only felt by a few people, who are resting at home.
Grade III - Weak Oscillation
Felt at home by few people. People at rest feel a slight sway or vibration.
Grade IV - Noticeable Grade
Felt at home by many people, outside by few.
Few people wake up from their sleep. Windows, doors and household appliances vibrate.
Grade V - Strong Shaking
Felt at home by most people, outside by few.
Many people wake up from their sleep, few people are frightened. Buildings shake, hanging objects swing violently. Small objects move out of place, doors and windows open and/or slam.
Grade VI - Scary Shaking
Many people get scared and run out, some objects fall. Many buildings suffer from minor damage that is not in the skeleton of the building, such as thin cracks and small pieces of plaster falling off.
Grade VII - Damage to Buildings
Most people get scared and run out, furniture moves and many objects fall from shelves. Many well-built buildings suffer moderate damage: small cracks in the walls, falling plaster, falling pieces of chimneys. In old buildings there may be large cracks in the walls and collapse of internal walls.
Level VIII - Destruction of Buildings
Many people find it difficult to stand. In many buildings, large cracks form in the walls.
In few normal buildings, a massive fall of walls occurs, while old and weak buildings may collapse.
Class IX - General Damage to Buildings
General panic. Many old and weak buildings are collapsing. Heavy damage was also caused to the well-built buildings: massive fall of walls and partial collapse of the structure's skeleton.
Level X - General Destruction of Buildings
Many well-built boys break down.
Grade XI - Calamity
Many of the well-built buildings are collapsing, including several buildings built to a strict earthquake-resistant standard.
Grade XII - Destruction
Almost all the buildings are destroyed.
