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RE: Texas Twisters

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This is the direct link to the Wind Engineering Research Center at Texas Tech.  It is a wealth of

Harold Sprague

> -----Original Message-----
> From:	Polhemus, Bill [SMTP:wlpolhemus(--nospam--at)]
> Sent:	Friday, March 31, 2000 10:47 AM
> To:	'seaint(--nospam--at)'
> Subject:	RE: Texas Twisters
> The short answer is "design for adequate uplift". The chances that a
> tornado
> will come tearing right through is small. And you can only do so much with
> regard to airborne projectiles. But the severe localized winds that occur
> in
> the immediate vicinity of the twister CAN be handled by the structure if
> you
> do it right.
> For more information, see the following URL for the Wind Engineering
> Research Center at Texas Tech:
> -----Original Message-----
> From: Mark E. Deardorff [mailto:MarkD(--nospam--at)]
> Sent: Friday, March 31, 2000 10:22 AM
> To: seaint(--nospam--at)
> Subject: RE: Texas Twisters
> Being from California I have never had to design for a tornado. In fact, I
> was under the impression that the most design anyone ever actually does is
> to pray that the tornado misses the building.
> If required to endure the extreme loads a tornado can produce, how could a
> light-weight flat roof ever be economically designed?