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RE: ASCE/SEI 7-05

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David,

 

The edge of the roof is the “separation point” for the wind flow. Consequently, the peek pressure will be in that sector and the “a” dimension should be referred to that edge.

 

Jorge Jimenez, PE

 


From: M. David Finley, P.E., P.A. [mailto:davidfinley(--nospam--at)bizsea.rr.com]
Sent: Wednesday, February 14, 2007 12:59 PM
To: Seaint(--nospam--at)Seaint.Org
Subject: ASCE/SEI 7-05

 

I'm trying to find a definitive answer within ASCE/SEI 7-05 to this question, but so far have not:

 

A single story rectangular building with an small (3'-0" or so) overhang.  Gable Roof with less than 7 degree slope.

For the walls, dimension "a" is measured from the ends of the walls - no problem.

But for the roof, is Dimension "a" also measured from the ends of the wall?  Or is it measured from the edge of the roof?

 

David Finley
M. David Finley, P.E., P.A.
2086 SW Main Boulevard - Suite 111
Lake City, FL  32025
386-752-6400