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RE: storage racks with partially restrained moment connections - wind frame analysis in high seismic zones

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Harold,

Give in to the dark side of the force.

Scott M Haan  P.E.
Plan Review Engineer
Building Safety Division http://muni.org/building, 
Development Services Department,
Municipality of Anchorage
phone: 907-343-8183   fax: 907-249-7399
mailto:haansm(--nospam--at)ci.anchorage.ak.us

> -----Original Message-----
> From:	Sprague, Harold O. [SMTP:SpragueHO(--nospam--at)bv.com]
> Sent:	Wednesday, March 21, 2001 1:38 PM
> To:	'seaint(--nospam--at)seaint.org'
> Subject:	RE: storage racks with partially restrained moment
> connections -  wind frame analysis in high seismic zones
> 
> 
> Peter,
> 
> I have repeated it several times,  THIS IS NOT A DRIFT LIMIT!!!
> 
> Please read the NEHRP and the RMI.
> It is what the movement the installation is to accommodate.
> 
> Regards,
> Harold O. Sprague
> 
> 
> > -----Original Message-----
> > From:	Peter Higgins [SMTP:76573.2107(--nospam--at)compuserve.com]
> > Sent:	Wednesday, March 21, 2001 4:22 PM
> > To:	INTERNET:seaint(--nospam--at)seaint.org
> > Subject:	RE: storage racks with partially restrained moment
> > connections - wind frame analysis in high seismic zones
> > 
> > With all due respect to Mr. Azzi, he's wrong, and should not be speaking
> > for the RMI technical committee which is chaired by Dan Clapp.
> > 
> > Mr. Clapp definitely knows better. I recommend you consult with him
> > directly and revise your drift limits. No installation in my experience
> > satisfies this drift limit, including my own, where I am one of the more
> > stringent "separatists".
> > 
> > I suspect he took shaker table measurements and then multiplied these by
> > omega. They already were ultimate drifts. Hence the huge discrepancy.
> > 
> > Peter Higgins, SE
> > 
> > Message text written by INTERNET:seaint(--nospam--at)seaint.org
> > >Peter,
> > 
> > Again this is not a drift limit.  This is the amount of drift that you
> > have
> > to allow for.  If it were a building it is the omega sub zero times the
> > calculated drift, and is more to address pounding effects.  It was
> > promulgated by the RMI representative Victor Azzi.
> > 
> > Regards,
> > Harold O. Sprague
> > <
> > 
> > 
>