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RE: Wind Exposure

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Bear in mind that you can have different exposures in different directions. For example, you may have “exposure B all around” except for the direction from the water, which could be “exposure C”.


From: Ed Tornberg [mailto:ed(--nospam--at)]
Sent: Monday, January 09, 2006 2:33 PM
To: seaint(--nospam--at)
Subject: Wind Exposure


Let’s say I have a house that’s 600 feet or so from the ocean, West coast.  ASCE 7-02 governs.


Between the waterline and the house is a hill, evergreen trees, and other houses.  It’s clearly surface roughness B all around.


Question1 :  What is the design wind exposure?


Question 2:  would it make any difference if using the 1997 UBC?




Ed Tornberg

Tornberg Consulting, LLC