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torsion...one more time but with different "twist"

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If anyone could give me some names and numbers of people who 
can answer this question, I'd appreciate it very much.

Dave


------- Forwarded message follows -------
From:           	Dave Evans <DEvans(--nospam--at)tnh-inc.com>
To:             	seaint(--nospam--at)seaint.org
Subject:        	torsional amplification factor oddity
Date sent:      	Fri, 28 Sep 2001 12:19:37 -0900

Hello,

Does anyone know the rationale for using story *drifts* to check for 
torsional irregularity, whereas building *displacements* are used to 
calculate the torsional amplifaction factor?  Why aren't drifts used 
to calculate the amplification factor, too? (Or...why aren't
displacements used to determine whether there is an irregularity?)

As codified, although the drifts may indicate torsional irregularity, 
the displacements may be such that there is no amplification 
(which seems slightly odd.)

Thanks,
Dave Evans, P.E.
TNH, Inc.
------- End of forwarded message -------

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