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Re: Wind and Seismic for Redding CA

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> The 1997 UBC does not require snow loads of 30 psf
> or less to be combined with seismic loads.
> (1612.3.2 exception #2)
>
> Mark Pemberton, P.E.

But then, if you have a snow load of 35 psf, suddenly you have
to include 25% of the snow load.  I think that this is
one area of the code that could use some more thinking.  It
should be a gradual curve, not a sudden jump.

Dan Goodrich, P.E.


>
> -----Original Message-----
> From: Structuralist [mailto:dennis.wish(--nospam--at)gte.net]
> Sent: Tuesday, January 02, 2001 11:00 PM
> To: seaint(--nospam--at)seaint.org
> Subject: RE: Wind and Seismic for Redding CA
>
>
> It's my understanding that Redding also has a snow load of 30-psf. Are you
> required in zone 3 to use a percentage of the SN in your lateral analysis?
>
> Dennis S. Wish, PE
>
>
> -----Original Message-----
> From: kendeb [mailto:kendeb(--nospam--at)maxinet.com]
> Sent: Tuesday, January 02, 2001 6:59 PM
> To: seaint(--nospam--at)seaint.org
> Subject: Re: Wind and Seismic for Redding CA
>
>
> Well, since I live in (near) Redding, CA, I think I can help a little. I
use
> 80mph with Exposure B most of the time. I only use Exposure C if the
> specific site
> location requires it. Most all of the terrain around Redding can qualify
as
> Exposure B. I believe that I began using 80 mph rather than 75 mph at the
> request of
> the City B.O. The county (Shasta) probably would accept 75 mph. Seismic
zone
> is 3. And both the City of Redding and Shasta County accept the '97 UBC.
>
> Ken Reed, PE
>
>
> Ken Peoples wrote:
>
> > I have a client who needs to specify a tank that will
> > be installed near Redding CA.  He has asked me what to
> > tell the manufacturer about wind and seismic loads.
> > Being from the east coast, I would just like to check
> > with some of you CA Engineers to be sure that what I
> > am going to tell him is OK.  I guess my first question
> > is whether I can use 1997 UBC.  If I can, I think I
> > can tell him Seismic Zone 3 with a Minimum Basic Wind
> > Speed of 80 mph. Any comments are appreciated.
> >
> > Ken
> >
> > =====
> > Kenneth S. Peoples, P. E.Lehigh Valley Technical Associates2102 Main St.
> Suite 200Northampton, PA 18067ph: 610-262-6345fax: 610-262-8188email:
> lvta(--nospam--at)fast.net
> >
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