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Re: Is a garage partially open, open or closed?

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In a message dated 2/17/2008 11:26:40 A.M. Pacific Standard Time, William.Sherman(--nospam--at) writes:
recently asked a similar question on the listserver regarding industrial buildings that have several large overhead doors along one wall.  It does not appear that the codes clearly address the issue of open vs closed overhead doors/ garage doors. 
It appears that this is left to the engineer's judgment and/or the project criteria.  The written design criteria for some projects define a primary wind speed for consideration as an "enclosed structure" and a reduced wind speed for consideration as a "partially enclosed structure" (e.g., 90 mph for enclosed and 60 mph for partially enclosed).  This assumes that the door can be open for some wind pressures but is likely to be closed during extreme wind events.
Bill Sherman
Who decides on these wind speeds...the owner, the city,  the designer ??
Joe Venuti
Johnson & Nielsen Associates
Palm Springs, CA

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