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RE: SEI/ASCE 7-02 Wind Loads

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The definition of "effective wind area" says that you do not have to use a width less than one-third the span length.

Roger C. Davis
Architect
SDS Architects, Inc.

-----Original Message-----
From:	Cory Structural Engineering, P.C. [SMTP:coryse(--nospam--at)bellsouth.net]
Sent:	Wednesday, April 16, 2003 2:10 PM
To:	seaint(--nospam--at)seaint.org
Subject:	SEI/ASCE 7-02  Wind Loads


What effective wind area should be used for concrete masonry unit wall 
design per figure 6-3 of SEI/ASCE 7-02.  Should it be vertical wall 
reinforcing spacing times wall height which would give a high 
pressure?   For a 15'-0" high wall I am contemplating installing a bond 
beam at mid-height which should increase the effective wind area and allow 
designing for a lower pressure.  Is it reasonable to assume that the joint 
reinforcing would make the wall act as a unit such that the effective wind 
area would be the wall height times its length.  Does anyone have any 
recommendations for effective wind area?

James a. Cory III, P.E.
Cory Structural Engineering, P.C.


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