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RE: ASCE 7 Wind Gust Effect Factor

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This is consistant with what was offered at some session on the wind provisions of ASCE 7 at the Structures Congress in Long Beach by an ASCE 7 Wind "Expert"...the vast majority of buildings would end up with a gust factor of 0.85.  Of course, my one exposure to the hot air blowing from section 6.5.8 (yes, pun intended) was for doing a sign...not a building.  Let's just say that for that little exercise in "fun", it made me seriously question my dislike of beer...some liquid lubrication would have likely made that experience MUCH more pleasant.  Several hours of looking at that gibberish/witchcraft tended to make me want to beat the crap out of someone....especially since I used to be able to get a wind pressure/force for a sign from the BOCA code in about 30 seconds.
Adrian, MI
-----Original Message-----
From: David Topete [mailto:d.topete73(--nospam--at)]
Sent: Friday, August 08, 2008 5:10 PM
To: seaint(--nospam--at)
Subject: Re: ASCE 7 Wind Gust Effect Factor

A beer or two makes most things funner...
Using a gust effect factor of 0.85 seems conservative to most applications.  try setting up a spreadsheet.  i have a mathcad sheet set up from my last p.o.e.  Let me see if i can find an excel sheet.

On Fri, Aug 8, 2008 at 1:42 PM, Scott Maxwell <smaxwell(--nospam--at)> wrote:
You don't want to do it per 6.5.8?  But, there so many pretty forumulas and wonderfully variable variables!  <grin>  Such witchcraft is meant to be fun!
And yes, I am being sarcastic.
FWIW, it is not too bad, if you have several hours to kill.  I suppose that if I drank beer, a few beers would likely make it more enjoyable.  :-)
Adrian, MI
-----Original Message-----
From: Garner, Robert [mailto:rgarner(--nospam--at)]
Sent: Friday, August 08, 2008 2:42 PM
To: seaint(--nospam--at)
Subject: ASCE 7 Wind Gust Effect Factor

I am analyzing a tower type building using the Analytical Procedure, which requires the divination of the Gust Effect Factor.  ASCE Paragraph graciously allows the use "any rational analysis defined in the recognized literature" as an alternate to the witchcraft required in 6.5.8.


Does anyone have any recommendations for recognized literature that can serve as an alternate to compute this highly mystical factor?


I think Doug Adams came up with the answer to the question of the universe as 42.  Supposedly, after they finally found this answer, they forgot the question.  The world can now thank me for I have discovered that the question is "What is the gust effect factor".


Thanks for your help.



Bob Garner, S.E.


R. Garner

Moffatt & Nichol

Tel.:  (619) 220-6050

Fax.: (619) 220-6055

e-mail: rgarner(--nospam--at)


David Topete, SE