Answer for tornado, poured concrete with steel and fiber
reinforced mix. Also spall-proof glass and steel shutters.
Some properly placed garden walls, planters and such would
deflect wind a debris from the windows. The roof would be
designed to withstand 150 mph and would NOT be a structural
part of the house. The concrete box would be designed to be
weather/water tight even if the roof blows off and would
serve primarily as a cover for the mechanical systems
located on the roof.
Could be designed to be fireproof and to withstand a direct
hit from a cat 5 tornado with only minor damage. Flood
would he handled by proper siting on high ground with a
nearby drainage basin.

Very few tornadoes destroy more than 50 sq. miles,
hurricanes can destroy 1,000s (Katrina was 90,000 sq.miles)
and hurricanes spawn tornadoes too.


--
James H. Macklin
ATP,CFI,A&P

--
The people think the Constitution protects their rights;
But government sees it as an obstacle to be overcome.
some support
http://www.usdoj.gov/olc/secondamendment2.htm
See http://www.fija.org/ more about your rights and duties.


"Randy Aldous" wrote in message
oups.com...
| Bob Noel wrote:
|
| One word: Tornado.
|
| :-)
|
| ----------------------
|
| At least one can hide from a tornado (or drive away from
its path) and
| the chances of it not hitting you are pretty good compared
to a
| hurricane.
|
| Randy
|