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Re: 1997 UBC EQ Requirements

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Dan:

You are confusing steel and concrete provisions.  According to 
Table 16-N of the 1997 UBC, steel OMRF's are allowed in any zone 
while concrete SMRF are required in zones 3 and 4.

-Mike


*******************
> From:          Dan Connell <dan__connell(--nospam--at)hotmail.com>
> Subject:       Re: 1997 UBC EQ Requirements
> Date:          Thu, 01 Jul 1999 21:00:40 PDT

> Are OMRF'S allowed in seismic zone 4 in the 97 UBC?
> I thought they were only allowed in zones 1 and 2.  Only SMRF'S were allowed 
> in 3 and 4.
> -Dan
> 
> >From: Parkerres(--nospam--at)aol.com
> >Subject: 1997 UBC EQ Requirements
> >Date: Thu, 1 Jul 1999 01:53:54 EDT
> >...
> >does primarily Type V (wood) structures with OMRF steel frames.  I have 
> >...

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Michael Valley                                   E-mail: mtv(--nospam--at)skilling.com
Skilling Ward Magnusson Barkshire Inc.                  Tel:(206)292-1200
1301 Fifth Ave, #3200,  Seattle  WA 98101-2699          Fax:        -1201