I am going there in May (under protest) so I will go see this sign.
Anything else you can tell me about it?
Gary
Harold Sprague wrote:
> The sign in question does not warrent a dynamic analysis, but there
> are signs along the strip in Las Vegas that sometimes are evaluated in
> wind tunnels with modifications at the base to determine a dynamic
> response.
>
> The Hilton sign in Las Vegas is 279' tall with a terrible plan and
> elevation aspect ratio. The sign it replaced blew down in a wind storm.
>
>
> Regards,
> Harold Sprague
>
>
> ------------------------------------------------------------------------
> Date: Fri, 29 Feb 2008 09:15:41 -0800
> From: d.topete73@gmail.com
> To: seaint@seaint.org
> Subject: Re: Sign Structures
>
> A "dynamic" analysis for a billboard.... Tomfoolery at its highest...
>
> On Fri, Feb 29, 2008 at 5:00 AM, Gary L. Hodgson and Assoc.
> <ghodgson@bellnet.ca <mailto:ghodgson@bellnet.ca>> wrote:
>
> Thanks, Harold
> I will be doing that. There is no guidance in our codes on
> signs or
> other non-building structures. Your codes go further than
> ours, as ours
> are only written in regard to buildings. If I want to design
> a crane
> runway, storage bin, or sign _for seismic loads_, I have to
> refer to
> American publications. The problem is that our codes don't use
> the same
> terms or geographical data.
> In going up against this municipality, I have to be on firm
> footing,
> because my customer has a history of bad relations with
> them--he has won
> two law suits against the city and their three page letter (of
> structural questions only) came two days after the latest
> judgement was
> published in the newspaper. This city has the first or second
> highest
> average income in Canada and they don't like billboard signs,
> even if
> though there a lot of them existing in the city. One of the
> questions
> was "did I do a dynamic analysis of the structure" (for a
> 20'x10' sign
> with a top at 25' above grade).
> Gary
> How many cases of beer do I owe you now?
>
> Harold Sprague wrote:
> > Gary,
> > The projected area in the plane of the sign is relatively small.
> > Seismic may govern. You could categorize signs as nonbuilding
> > structures. The loading is a function of the force
> resisting system
> > which establishes the response coefficient and the mass.
> >
> > Regards,
> > Harold Sprague
> >
> > > Date: Thu, 28 Feb 2008 17:04:42 -0500
> > > From: ghodgson@bellnet.ca <mailto:ghodgson@bellnet.ca>
> > > To: seaint@seaint.org <mailto:seaint@seaint.org>
> > > Subject: Sign Structures
> > >
> > > List,
> > > I design sign structures for 2 clients-these are all
> free-standing
> > signs
> > > on one or two posts. In our area, generally wind governs. A
> > > municipality has questioned whether I designed a
> particular sign for
> > > seismic loading. Nothing in our codes addresses the issue
> of signs
> > > subject to seismic loading unless they are part of a
> building, in which
> > > case they are considered a fixture just like a mechanical
> piece of
> > > equipment. Our codes only require that signs over a
> certain height or
> > > area have to be designed by a professional engineer. So, I
> guess my
> > > question is what seismic loading do you design signs for?
> Thanks in
> > > advance.
> > > Gary
> >
>
>
> ------------------------------------------------------------------------
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