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Re: WOOD MOMENT FRAMES, Rw = 3[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaoc(--nospam--at)seaoc.org>
- Subject: Re: WOOD MOMENT FRAMES, Rw = 3
- From: "Bill Allen, S.E." <billallen(--nospam--at)earthlink.net>
- Date: Tue, 14 Apr 1998 07:24:51 -0700
Ah, the Great Debate. Subsequent to SEAOSC's seminar on the Wood Design Provisions of the 1997 UBC, I posted a comment on the seminar with this issue as one of the primary problems. Unfortunately, I cannot find the post in my archives and I have not spent the time to search for it on SEAOSC's archives. According to the presenter at the seminar, the Rw=3 would apply to all of the lateral force resisting elements in the direction where the "flagpoles" would be resisting the lateral force. The example used in the seminar was a two story townhouse project. The presenter pointed out a problem with this provision in that the shear walls at the opposite end of the townhouse does not "know" that there are flagpoles at the garage entry. The presenter (a SEAOSC committee member) pointed out in his presentation that this provision should have been corrected, but the 1997 UBC had already gone to press. His conclusion was essentially a shrug of the shoulders and a meek response something to the effect of "Oh well, maybe we'll catch it in the IBC 2000". The entire audience (composed mainly of design engineers as well as building officials) appeared to agree that this provision is not accurate. Even one building official offered to adopt an "exception" if SEAOC would publish a position paper. Even though the President of SEAOSC and the Chairman of the Code Committee were present, no offer was made to even investigate the possibility of such a position paper. Needless to say, I was extremely disappointed in the (non) position SEAOC has taken with this blunder. Regards, Bill Allen -----Original Message----- From: Parkerres <Parkerres(--nospam--at)aol.com> To: seaoc(--nospam--at)seaoc.org <seaoc(--nospam--at)seaoc.org> Date: Monday, April 13, 1998 1:44 PM Subject: Re: WOOD MOMENT FRAMES, Rw = 3 >The real question we have in the office, is whether or not the Rw=3 now >applies to the entire building since you are using it for one shear line in >one direction. >Bruce Resnick, SE >Parker Resnick Str. Eng.
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