Global & Disaster Medicine

Archive for the ‘Structural’ Category

6/29/1995: The Sampoong department store in Seoul, South Korea collapses, killing more than 500 people.

History

 


San Francisco: Experts consider these buildings vulnerable to collapse only in extreme shaking caused by rare and powerful earthquakes, similar to the one that struck San Francisco in 1906.

NY Times

USGS document:  HayWired

San Francisco Region at Night

Abstract

The HayWired Earthquake Scenario—Engineering Implications is the second volume of U.S. Geological Survey (USGS) Scientific Investigations Report 2017–5013, which describes the HayWired scenario, developed by USGS and its partners. The scenario is a hypothetical yet scientifically realistic earthquake sequence that is being used to better understand hazards for the San Francisco Bay region during and after a magnitude-7 earthquake (mainshock) on the Hayward Fault and its aftershocks.

Analyses in this volume suggest that (1) 800 deaths and 16,000 nonfatal injuries result from shaking alone, plus property and direct business interruption losses of more than $82 billion from shaking, liquefaction, and landslides; (2) the building code is designed to protect lives, but even if all buildings in the region complied with current building codes, 0.4 percent could collapse, 5 percent could be unsafe to occupy, and 19 percent could have restricted use; (3) people expect, prefer, and would be willing to pay for greater resilience of buildings; (4) more than 22,000 people could require extrication from stalled elevators, and more than 2,400 people could require rescue from collapsed buildings; (5) the average east-bay resident could lose water service for 6 weeks, some for as long as 6 months; (6) older steel-frame high-rise office buildings and new reinforced-concrete residential buildings in downtown San Francisco and Oakland could be unusable for as long as 10 months; (7) about 450 large fires could result in a loss of residential and commercial building floor area equivalent to more than 52,000 single-family homes and cause property (building and content) losses approaching $30 billion; and (8) combining earthquake early warning (ShakeAlert) with “drop, cover, and hold on” actions could prevent as many as 1,500 nonfatal injuries out of 18,000 total estimated nonfatal injuries from shaking and liquefaction hazards.

Suggested Citation

Detweiler, S.T., and Wein, A.M., eds., 2018, The HayWired earthquake scenario—Engineering implications: U.S. Geological Survey Scientific Investigations Report 2017–5013–I–Q, 429 p., https://doi.org/10.3133/sir20175013v2.

“……Engineers have known about a major defect in certain steel-frame buildings since 1994, when shaking from the Northridge earthquake in Los Angeles fractured critical joints in more than 60 buildings, bringing at least one very close to collapse. The building code was rewritten to eliminate the flawed technique.….”

1. Hartford Building, 650 California

2. Beal Bank Building, 180 Sansome

3. Bechtel Building, 50 Beale

4. 44 Montgomery

5. 425 California Street

6. 555 California Street

7. McKesson Plaza, One Post

8. Pacific Gas & Electric Building, 77 Beale

9. One Embarcadero Center, 355 Clay

10. Transamerica Pyramid, 600 Montgomery

11. 100 Pine Center, 100 Pine


A landslide has comprised the integrity of Lake Tahoma Dam (North Carolina). MANDATORY EVACUATIONS underway

CBS

 


Kenya: The Patel dam bursts after heavy rain, killing at least 27 and rendering 200 homeless.

BBC


A pedestrian bridge suddenly collapsed onto the road below near Florida International University, crushing cars, killing 4 and sending at least 9 to hospitals

CNN

 


An apartment building collapsed Sunday in Poland’s western city of Poznan, killing 4 and injuring 24 others

MSN

 


1/29/1922: At the Knickerbocker Theatre in Washington, D.C., the accumulated snow on the theater’s roof collapses the building and tons of steel and concrete fell down on top of the theatergoers cusing the deaths of 108 and injuring another 133.

History Channel

 

 


1/20/1980: Bleachers at a bullring in Sincelejo, Colombia, collapse, resulting in the deaths of 222 people and injuries to hundreds more

History Channel

 


An oil spill from an Iranian tanker that sank in the East China Sea is rapidly spreading (two huge slicks covering 52 square miles)

NY Times


1/15/1919: Molasses burst from a huge tank flooding the streets of Boston, killing 21 people and injuring scores of others.

History Channel

  • A 58-foot-high tank filled with 2.5 million gallons of crude molasses.
  • The bolts holding the bottom of the tank exploded, shooting out like bullets
  • Hot molasses rushed out.
  • An eight-foot-high wave of molasses swept away the freight cars and caved in the building’s doors and windows.

 


Categories

Recent Posts

Archives

Admin