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FEMA 273 and 274 has great suggestions for upgrading/modifying existing
structures.

You can get the publication online or through FEMA

-----Original Message-----
From: Yousefi, Ben [mailto:Ben.Yousefi(--nospam--at)ci.sj.ca.us]
Sent: Friday, June 09, 2000 7:54 AM
To: 'seaint(--nospam--at)seaint.org'
Subject: RE: 


Technically you cannot build a wall like that anymore. But if you have an
existing wall that is otherwise built well, I would not totally dismiss its
value. A possible approach is to consider only one side in your
calculations.

Ben Yousefi, SE
San Jose, CA

	-----Original Message-----
	From:	Joseph M. Otto, P.E. [SMTP:jmo_engineering(--nospam--at)email.msn.com]
	Sent:	Thursday, June 08, 2000 5:33 PM
	To:	Seaint@Seaint. Org
	Subject:	

	 
	 

	 << File: Image2.gif >> 

	IRELAND ENGINEERING

	 

	January 7, 2000

	I have been requested to place new penetrations into an existing
plywood shearwall which is sheathed with 1/2" ply. both sides nailed with
10d nails at 4" on center at plywood panel edges and 12" o.c. on the field.
The edges of the panels are nailed to the same 2X studs on each side of the
wall.
	 
	Table 23-II-J-1 footnote 2 (page 2-288) of the 1997 UBC indicates
that these studs need to be 3X.  
	 
	Does this mean that I  can't use these walls to take shear? 

	:Respectfully,  

	Joseph M. Otto, PE
	Civil Engineer, Project Manager
	Ireland Engineering, Inc.
	46750 Fremont Blvd., Suite #204
	Fremont, CA 94538
	(510) 438-9632 x11    FAX (510) 438-0689
	jmo_engineering(--nospam--at)email.msn.com <mailto:jmo_engineering(--nospam--at)email.msn.com>