Earthquakes: Concrete risks

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.

Story: Many older L.A. buildings could collapse in an earthquake
Full coverage: California earthquake safety
Interactive map: L.A.’s hidden dangers
FAQ: Concrete buildings, earthquake safety and you

— Rong-Gong Lin II, Rosanna Xia and Doug Smith

Analysis of non-ductile concrete buildings in L.A. Oct. 13, 2013
USC policy study of non-ductile concrete buildings in L.A. Oct. 13, 2013
California Seismic Safety Commission report on Northridge quake Oct. 13, 2013
L.A. City Council motions on seismic safety Oct. 13, 2013
Report on concrete for state Seismic Safety Commission Oct. 13, 2013
Buildings damaged in the Northridge earthquake Oct. 13, 2013
USGS report on Veterans Administration Hospital collapse Oct. 11, 2013
L.A. guidelines for voluntary retrofits of concrete buildings Oct. 13, 2013
Concrete Coalition’s California inventory project Oct. 11, 2013
LaBonge motion on concrete buildings Oct. 15, 2013 Los Angeles City Councilman Tom LaBonge introduced a motion asking that the city building and safety department be directed to report on possible approaches to surveying non-ductile concrete buildings.
L.A. Mayor Garcetti’s earthquake safety plan Dec. 8, 2014 Read Los Angeles Mayor Eric Garcetti proposals for the most ambitious seismic safety regulations in California history, which would require owners to retrofit thousands of building most at risk of collapse during a major earthquake.
UC concrete building list disclaimer Jan. 26, 2014 The University of California compiled a list of nearly 1,500 concrete buildings constructed in Los Angeles before 1976. The list was given to the city of Los Angeles and released to the Times in response to a public records request, with a disclaimer attached.
L.A. City Council proposal on state earthquake bond ballot measure Nov. 1, 2013
City of Los Angeles letter to UC researchers Oct. 24, 2013 By Rosanna Xia, Ron Lin, Doug Smith
UC response to city request Oct. 24, 2013
Parks motion on concrete buildings Oct. 15, 2013 L.A. City Councilman Bernard Parks made a motion asking city agencies to work with the City Attorney to gather data on older concrete buildings that need retrofitting, identify them and recommend ways to make them safer.
16130 Ventura Blvd., Encino Oct. 13, 2013
16260 Ventura Blvd., Encino Oct. 13, 2013
16550 Ventura Blvd., Encino Oct. 13, 2013
16633 Ventura Blvd., Encino Oct. 13, 2013
16661 Ventura Blvd., Encino Oct. 13, 2013
1777 Vine St., Los Angeles Oct. 13, 2013
28th Street YMCA Oct. 13, 2013
3200 Wilshire Blvd., Los Angeles Oct. 13, 2013
3250 Wilshire Blvd., Los Angeles Oct. 13, 2013
3319 Wilshire Blvd., Los Angeles Oct. 13, 2013
3324 Wilshire Blvd., Los Angeles Oct. 13, 2013
3422 Wilshire Blvd., Los Angeles Oct. 13, 2013
3540 Wilshire Blvd., Los Angeles Oct. 13, 2013
621 S. Broadway, Los Angeles Oct. 13, 2013
627 S. Broadway, Los Angeles Oct. 13, 2013
6305 Yucca St., Los Angeles Oct. 13, 2013
824 S. Los Angeles St., Los Angeles Oct. 13, 2013
840 Santee St., Los Angeles Oct. 13, 2013
Avalon Oct. 13, 2013
Capitol Records Oct. 13, 2013
Central Plaza Oct. 13, 2013
Cheney Block Oct. 13, 2013
Equitable Building of Hollywood Oct. 13, 2013
Gaylord Oct. 13, 2013
Hollywood Pacific Theater Oct. 13, 2013
Isaacs Building Oct. 13, 2013
Juanita Tate Legacy Towers Oct. 13, 2013
Knickerbocker Oct. 13, 2013
Lincoln Theater Oct. 13, 2013
Marie Antoinette Oct. 13, 2013
Pantages Theatre Oct. 13, 2013
Park Westwood Tower Oct. 13, 2013
Security Pacific Bank building Oct. 13, 2013
The Broadway Hollywood Oct. 13, 2013
The Talmadge Oct. 13, 2013
USGS report on 1971 Sylmar earthquake Oct. 13, 2013
UTLA building Oct. 13, 2013
Walter P. Story Building Oct. 13, 2013
Westwood clock tower Oct. 13, 2013
Westwood dome building Oct. 13, 2013
W Hotel Oct. 13, 2013
Wilshire Hotel Oct. 13, 2013
15720 Ventura Blvd., Encino Oct. 11, 2013
16055 Ventura Blvd., Encino Oct. 11, 2013
16200 Ventura Blvd., Encino Oct. 11, 2013
16255 Ventura Blvd., Encino Oct. 11, 2013
212 E. 8th St., Los Angeles Oct. 11, 2013
3255 Wilshire Blvd., Los Angeles Oct. 11, 2013
3341 Wilshire Blvd., Los Angeles Oct. 11, 2013
3350 Wilshire Blvd., Los Angeles Oct. 11, 2013
719 S. Broadway, Los Angeles Oct. 11, 2013
801 S. Los Angeles St., Los Angeles Oct. 11, 2013
817 S. Los Angeles St., Los Angeles Oct. 11, 2013
924 Westwood Blvd., Los Angeles Oct. 11, 2013
Cooper Building Oct. 11, 2013
Courtyard Marriott Oct. 11, 2013
Desmond’s Oct. 11, 2013
Forrester Building Oct. 11, 2013
Guaranty Building Oct. 11, 2013
Harris Newmark Building Oct. 11, 2013
Hollywood Plaza Oct. 11, 2013
Hotel Palomar Oct. 11, 2013
Korean Consulate General Oct. 11, 2013
Maxfield Building Oct. 11, 2013
Norton Building Oct. 11, 2013
Palmer Building Oct. 11, 2013
Taft Building Oct. 11, 2013
Vintage Westwood Horizons Oct. 11, 2013

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