Re: Wood shear wall values still reduced to 0.75 of UBC table values?[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Wood shear wall values still reduced to 0.75 of UBC table values?
- From: Steve Privett <EQretroDR(--nospam--at)earthlink.net>
- Date: Wed, 24 Jan 2001 09:33:15 -0800
I'd suggest checking with the local municipality. LA City and Ventura
County use a flat reduction by percentage, but the City of Glendale, has
created their own set of values. I've found that if a local municipality
has changed things, they will gladly fax you the appropriate section so
you can design to their requirements rather than dealing with them as a
The city of L.A.'s post-Northridge emergency code provisions included a reduction of design values for wood panel shear walls to 0.75 of the values listed in the UBC. Just after that, I moved out of Zone 4. Word was that the '97 UBC was going to incorporate such a reduction into the tables, but my Code and the addenda that I have received do not show this... Now work from Zone 4 is coming to me, and I want to make sure that I'm not missing this somewhere. (Actually, I incorporated the reduction into my shear wall schedule, and wonder if I'm being WAY CONSERVATIVE--like all the contractors say--and could go back to the full UBC values.) Do you Zone 4 residents use the full values from UBC table 23-II-I-1? Seems plausible, considering V went from 0.14W to 0.22W using the "simplified static" method.... Thanks, Thor
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