LA times story,

"More than 1,000 old concrete buildings in Los Angeles and hundreds more throughout the county may be at risk of collapsing in a major earthquake, according to a Times analysis."

...

"Los Angeles officials have known about the dangers for more than 40 years but have failed to force owners to make their properties safer. The city has even rejected calls to make a list of concrete buildings."

Full story at link, with graphics.

http://www.latimes.com/local/la-me-earthquake-concrete-20131013-dto,0,1555748.htmlstory

Brian