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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Points of Failure (was Re: National infrastructure asset) (fwd)
Unnamed Administration sources reported that George William Herbert said: > Let's look at the "worst credible case" though, jet aircraft. > Nuclear reactor domes are rated to survive jumbo jet hits. Better check this one out; there is considerable dispute of late on this very point.. A F4 !=747 after all. > Jet aircraft are remarkably poor penetrators, in military terminal > ballistics terms. Ten feet of good reinforced concrete, at > $400/cu yd or so installed, will do the job nicely, though there > may be some spalling inside the aircraft won't penetrate. For a 3 > story, 120,000 sq ft 200x200x30 ft building that would be about > $9.3 million, about $77.70/ft^2. No help. You'll have intact but long since roasted into atoms building, hardware and employees. How many KWH of heat from the 57,285 gallons of kerosene? > Not that I'm recommending every telco facility be hardened to > resist a direct jumbo jet hit. But it's not that ridiculous > a task, and lesser hardening (half or 1/3 that level) would be > downright reasonable compared to the other costs of making these > sorts of buildings for these roles. A 2 foot thick reinforced > concrete wall, for example, might well be extremely reasonable. But every n of wall thinkness is f(n^2) less interior space; f(n^3) more cost to build, and f(n^8) more crap from local pols who really want retail space downtown instead of tombs. > There are many many angles to all of this. And who will pay? -- A host is a host from coast to [email protected] & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433
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