Seismic Intensity : Nine (IX) - Destructive
Nine (IX) : General panic. Damage slight to moderate (possibly heavy) in well-designed structures. Well-designed structures thrown out of plumb. Damage moderate to great in substantial buildings, with a possible partial collapse. Some buildings may be shifted off foundations. Walls can fall down or collapse.
- Cracked ground conspicuously.
- Damage considerable in (masonry) structures built especially to withstand earthquakes;
- threw out of plumb some wood-frame houses built especially to withstand earthquakes;
- great in substantial (masonry) buildings, some collapse in large part; or wholly shifted frame buildings off foundations, racked frames;
- serious to reservoirs; underground pipes sometimes broken.
Perceived Shaking
Violent
Potential Damage
Heavy
Peak Ground Motion Acceleration
65 to 124 (%g)
Peak Ground Motion Velocity
60 to 116 (cm/sec)