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Loma Prieta earthquake - Coggle Diagram
Loma Prieta earthquake
Location and Date
San Francisco
1989
october 17th
vulnerability
lots of people sat in earthquake proof stadium so they were safe
things very old like the bridges collapsed
some buildings and structures not up to modern standards
high amount of groundwater
old homes built on reclaimed land from the bay
impacts
low
death toll
support columns of upper deck failed
crushed cars on lower levels of the bridge
Bay bridge wasn't up to earthquake standards
liquefaction
in bay area
built on a mixture of sand dirt rubble
response
retro fitting building columns with carbon fibre
water back running within a few days
blue hydrants provide drinking water are now in place
every resident is now prepared for
72
hours if another quake comes
built a new pipeline to use in an emergancy
siesmic retrofitting
base isolation uses rubber blocks to absorb the waves of earthquake
additional structural support
cross bracing
plates
7
on ricter scale