Sent: Tuesday, May 16, 2006 8:56
Subject: Steel Tubes Laterally
I don’t recall
anything code-wise (1997 UBC/2001 CBC) regulating the allowable deflection for
glazing. Have I just missed it or is that correct?
If there isn’t such
a regulation, what would be a reasonable/prudent/standard practice for such a
In my situation, strength
is not a problem; I’m just not comfortable with the deflections I’m
getting and my gut tells me to raise the question.
William (Bill) Allen, S.E.
V (949) 248-8588 •
Sent: Monday, May 15, 2006 5:44 PM
Subject: Re: SMRF connection
In a message dated 5/15/06 2:44:01 PM,
I’m amazed that we want to stick with the old – UBC
97, as an example, when we have such a wealth of new information and documents
Who's "we"? I'm sure that "we practicing structural
engineers" would like to use the latest and greatest information
available, but some of the governing authorities--those folks who actually run
our professional lives to a great extent--do not appear to be quite so
interested. Or maybe it's just the inertia of the political system that
requires a decade to get even the obvious lessons of Loma Prieta, etc.,
incorporated into the legally effective code.
Some of us may try to incorporate available knowledge into our own practices,
providing that the resulting design *exceeds* the requirements of the effective
code, however that may open us up to charges of wasting our client's money,
even though we're just trying to make them safer. It's a tough call.
OTOH trying to use a new cutting-edge system may require the resources of a
major client and a major engineering office, due to the need for extensive
research, documentation, etc., that not all of us have available.
Ralph Hueston Kratz, S.E.
Richmond CA USA