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RE: R for knee brace[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: R for knee brace
- From: Harold Sprague <spraguehope(--nospam--at)hotmail.com>
- Date: Sun, 25 Oct 2009 20:19:31 +0000
This is like an ag building in which you can do anything you want. However, if the structure is important, I would be cautious. Buckeling of the column is a very undesirable first failure mode. The mass is nothing on a canopy. Why not er on the side of caution and use an R of 1.0? You aren't going to save a significant amount of money by using an R of 3.5 over 1.0. |
Regards, Harold Sprague
> > In a message dated 10/23/2009 2:40:45 P.M. Pacific Daylight Time,
> > firstname.lastname@example.org_ (mailto:leenlee_front(--nospam--at)leenlee.net) writes:
> > Hello, all
> > I have small canopy project, 40' x 16' x 10' high having 4 steel columns
> > at corner. OMRF(Ordinary Moment Resisting Frame) with R = 3.5 used at
> > trasverse direction and I will have L shape knee braces at longitudinal
> > direction. But I have no idea what R value is suitable for this
> > knee bracing.
> > Please give me some idea.
> > Thanks in advance.
> > LA, CA
> > --
> > David Topete, SE
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