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The five boroughs are home to more than 200,000 multifamily buildings made with un-reinforced brick and built from the mid-1800s to the 1930s, according to a city hazard plan. Many rowhouses across the city neighborhoods fall into this category.
Such masonry cannot bend or flex during an earthquake and would instead break or crumble. A strong earthquake could cause some buildings of this type to collapse.
— The New York Times
Last week’s 4.8 magnitude tri-state quake wasn’t nearly as strong as the (estimated) 5.5 magnitude incident that occurred on August 10, 1884, and would have caused $4.7 billion worth of damage to the modern city, according to the New York Times. Experts have warned that the risk posed to... View full entry
The 7.4 magnitude that struck eastern Taiwan yesterday has provided evidence as to how the country’s reputedly strong building codes and regulations prevented significant losses of life and property 25 years after another tragic seismic event led to widespread change. "Taiwan’s earthquake... View full entry
Conservators in Istanbul are racing to safeguard scores of at-risk heritage sites in the wake of Turkey’s deadliest earthquake in modern history, bracing for the probability of an even greater disaster in a city straddling an active faultline. — The Art Newspaper
Consequences of incumbent President Recep Erdoğan’s culture wars and the fallout of a “real-estate mentality that supersedes cultural heritage” have become unnecessary obstacles for volunteers who are up against the impossible challenge of securing 35,000 heritage sites around Istanbul... View full entry
Famous historic sites, low-income apartments and Twitter's headquarters all appear on a previously unpublished draft list of 3,407 concrete buildings in San Francisco that may be at high risk of collapse in a major earthquake, according to a copy of a city government document obtained by NBC News through a public records request. — NBC News
The city says the list is still a “preliminary draft inventory” of at-risk concrete structures, some of which were built after 2000, according to NBC. Who will actually pay for the mass retrofits still hasn’t been hammered out yet, leaving many to speculate as to its near-term feasibility... View full entry
In the wake of last month’s devastating earthquake in Turkey and Syria, Los Angeles County has identified some 33 important structures it says are the most at risk during a major seismic event of that magnitude. Last week, the Board of Supervisors published a list of at-risk properties owned by... View full entry
Reactions are pouring in following the devastating 7.8 and 7.5 magnitude earthquakes that struck Turkey and Syria early Monday morning. There are no estimates available yet as to the number of structures either collapsed or damaged across the region, but a minimum of 3,400 lives have been... View full entry
Four years removed from one of the worst natural disasters in Mexico’s history, one small city in the state of Morelos is ready to bridge the chasm between past tragedy and future optimism thanks to the efforts of one New York firm. Image courtesy of OMA New York OMA has announced that it... View full entry
An earthquake safety revolution is spreading along the streets and back alleys of Los Angeles, as steel frames and strong walls appear inside the first-story parking garages of thousands of apartment buildings.
The construction is designed to fix one of the most dangerous earthquake risks: Wood apartment buildings collapsing because the skinny poles propping up parking at the ground level are not strong enough to withstand the shaking.
— The Los Angeles Times
A building permit analysis conducted by The Los Angeles Times has found that over 27% of Los Angeles’s 11,400 "soft story" wood-frame apartments have been retrofitted since 2015 when the city passed an aggressive seismic upgrading ordinance. "Soft story" buildings are built with an... View full entry
On Thursday, the California Governor’s Office of Emergency Services will unveil an app created by UC Berkeley that will give all Californians who download it on iOS and Android phones the chance to get earthquake early warnings from any corner of the state.
Authorities will also begin issuing quake early warnings through the Wireless Emergency Alerts system, offering text message alerts even for people who have not downloaded the app.
— The Los Angeles Times
The new warning system will alert Californians who have the app when an earthquake registering at level 3 on the Modified Mercalli Intensity Scale strikes nearby. The state will send out text message alerts over its Wireless Emergency Alerts system to anyone within range of a level... View full entry
Although no campus buildings were deemed to be in the worst category, “dangerous,” six at UC Berkeley and three at UCLA were found to have a “severe” risk to life. The remaining 62 at UC Berkeley and 15 at UCLA were said to have a “serious” risk to life, according to the first reports released this week in response to a UC Board of Regents 2017 directive calling on every campus to undertake a seismic risk assessment. — The Los Angeles Times
The list includes some of both campus's most historic and important buildings, including Berkeley's architecture building, Wurster Hall, and UCLA's Powell Library. A potential 2020 ballot measure and a recently-proposed California State Senate bill could provide funding to make necessary retrofits. View full entry
Japan, through both government mandates and its engineering culture, builds stronger structures capable of withstanding earthquakes and being used immediately afterward. The United States sets a minimum and less protective standard with the understanding that many buildings will be badly damaged.
The two approaches reflect different attitudes toward risk, the role of government and collective social responsibility.
— The New York Times
The NYT takes a look at the drastically differing approaches (and ideologies behind them) towards earthquake safety in Japan compared with the United States and asks experts what would be at stake in the greater, urban picture in the anticipated event of a very big earthquake. "The debate over... View full entry
With earthquakes in the news following a pair of recent tremors in California, it’s important to remember that seismic design is an integral and increasingly complex aspect of building design architects work hard to address. An ever-improving standard, seismic codes not only save lives, but also... View full entry
Building codes and standards in many countries require engineers to consider the effects of soil liquefaction in the design of new buildings and infrastructure such as bridges, embankment dams and retaining structures — The Guardian
After the devastating earthquake that hit Indonesia, scientists are relating building collapses to soil liquefaction. When overly saturated soil is heavily loosened by intense seismic activity, particles in the soil lose its bond and contact with each other. Thus resulting in its loss of stiffness... View full entry
Yesterday, a magnitude 6.4 quake struck the Taiwanese city of a Hualien, Taiwan. So far, in its wake, the damage has left seven dead and injured 262 others; sixty-three people still remain unaccounted for. according to CNN. Since, emergency workers have been working diligently to rescue those who... View full entry
Los Angeles city officials and property owners are making progress on retrofitting the types of apartment buildings that proved especially vulnerable in the 1994 Northridge earthquake. [...]
As of this month, retrofits on 608 “soft-story” buildings are complete and another almost 4,000 retrofits are in progress, according to the mayor’s office. More than 13,000 of an estimated 13,500 soft-story buildings have been issued orders to comply, the first step on the road to retrofitting.
— Curbed LA
Commemorating the 24-year anniversary of the 1994 Northridge Earthquake which devastated the greater Los Angeles area on January 17, Curbed LA reports about the status of LA Mayor Eric Garcetti's effort to retrofit all of the city's 13,500 "soft-story" buildings — like the ubiquitous, and... View full entry
