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RE: City of San Diego and Proprietary Shearwalls

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San Diego is Zone 4.  

Sharon Robertson Bonds, PE
Salerno/Livingston Architects
363 Fifth Avenue, Third Floor
San Diego, California  92101
(619) 234-7471

	-----Original Message-----
	From:	chuckuc [SMTP:chuckuc(--nospam--at)pacbell.net]
	Sent:	Thursday, August 09, 2001 7:28 AM
	To:	seaint(--nospam--at)seaint.org
	Subject:	Re: City of San Diego and Proprietary Shearwalls

	In Marin Co., none of the Building Deptartments have accepted
Simpson's second story Strongwalls (no ICBO ER yet).  At the PCBC last
month, Simpson's rep said they were only a couple of week's away from final
approval. Are you saying San Deigo won't accept Simpson's ICBO ER? 
	Chuck Utzman, P.E. 
	  

	Dennis Wish wrote: 

		 I heard an interesting rumor that the city of San Diego was
not accepting the use of Proprietary shearwalls for installation at the
second floor level or above. Can someone verify if this is the case or if
there is a problem with specific proprietary walls and which ones if this is
the case? The only thing that I can think of is that there is the age old
question related to wood shrinkage and how it might be compensated for by
the proprietary panels. If this is the case, what is the difference in this
problem with any ordinary plywood shearwall or metal braced frame? Anyone in
the San Diego area care to comment on this one? Also, isn't San Diego City
in a lower seismic zone than the other coastal areas up to San Francisco or
have the increased their city to Zone 4?Dennis S. Wish, PE 
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