nanog mailing list archives
Re: East Coast Earthquake 8-23-2011
From: Roy <r.engehausen () gmail com>
Date: Wed, 24 Aug 2011 22:53:41 -0700
On 8/24/2011 7:18 PM, Sean Donelan wrote:
On Wed, 24 Aug 2011, Leigh Porter wrote:Indeed, we are not going to be building earthquake proof buildings in London for example.Of course there is no such thing as earthquake proof. The Earth is still a single point of failure :-)Essential facilty design usally takes the "standard" design probabilities for various hazards (heat, cold, wind, rain, earthquake, etc) and multiplies it by a larger safety factor. It doesn't mean designing forthe most extreme situation possible anywhere. You've got to rely on the geologists and structual engineers to know their stuff.In any case, its still just a probability. No matter how small the probability, any facility can still have a failure. Have a backup plansomewhere else with a different set of hazards.
Many years ago I was taught that "earthquake proof" means the building doesn't kill the occupants and not that the structure survives unscathed.. As examples, they used a hospital that was damaged in the magnitude 6.6 Sylmar quake of 1971 The building was basically destroyed but only four people were killed.
Current thread:
- Re: East Coast Earthquake 8-23-2011 - comment and a bit of a Christchurch Telco report :), (continued)
- Re: East Coast Earthquake 8-23-2011 - comment and a bit of a Christchurch Telco report :) Don Gould (Aug 24)
- Re: East Coast Earthquake 8-23-2011 - comment and a bit of a Christchurch Telco report :) Michael Painter (Aug 24)
- Re: East Coast Earthquake 8-23-2011 - comment and a bit of a Christchurch Telco report :) Don Gould (Aug 25)
- Re: East Coast Earthquake 8-23-2011 - comment and a bit of a Christchurch Telco report :) Mark Foster (Aug 25)
- Re: East Coast Earthquake 8-23-2011 - comment and a bit of a Christchurch Telco report :) Mark Foster (Aug 25)
- Re: East Coast Earthquake 8-23-2011 - comment and a bit of a Christchurch Telco report :) Don Gould (Aug 25)
- Re: East Coast Earthquake 8-23-2011 JC Dill (Aug 24)
- Re: East Coast Earthquake 8-23-2011 Patrick W. Gilmore (Aug 24)
- RE: East Coast Earthquake 8-23-2011 Leigh Porter (Aug 24)
- RE: East Coast Earthquake 8-23-2011 Sean Donelan (Aug 24)
- Re: East Coast Earthquake 8-23-2011 Roy (Aug 24)
- Re: East Coast Earthquake 8-23-2011 Sean Donelan (Aug 25)
- Re: East Coast Earthquake 8-23-2011 Steven Bellovin (Aug 24)
- Re: East Coast Earthquake 8-23-2011 Seth Mattinen (Aug 24)
- Re: East Coast Earthquake 8-23-2011 Jay Ashworth (Aug 24)
- Re: East Coast Earthquake 8-23-2011 JC Dill (Aug 26)
- Re: East Coast Earthquake 8-23-2011 Jay Ashworth (Aug 26)
- Re: East Coast Earthquake 8-23-2011 Patrick W. Gilmore (Aug 26)
- Re: East Coast Earthquake 8-23-2011 Gary Buhrmaster (Aug 24)
- Re: East Coast Earthquake 8-23-2011 Jay Ashworth (Aug 24)
- Re: East Coast Earthquake 8-23-2011 Scott Howard (Aug 24)