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RE: IBC 2000 Wind Loading

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The “Horizontal Loads” number is the sum of the sum of the wall loads with either positive or negative internal pressure on both walls.  The “Maximum Horizontal Wall Loads” number includes positive internal pressure on one wall and negative internal pressure on the other wall.  You use the first number to design the “Main Wind Force Resisting System” and the second set of numbers to design wall systems supporting roof framing.

 

Roger C. Davis

Architect

SDS Architects, Inc.

205 N. Dewey Street

Eau Claire, WI 54703

(715) 832-1605

 

-----Original Message-----
From: John P. Riley [mailto:jpriley485(--nospam--at)peoplepc.com]
Sent: Wednesday, May 26, 2004 3:00 PM
To: seaint(--nospam--at)seaint.org
Cc: Stewart, Frank
Subject: IBC 2000 Wind Loading

 

In Table 1609.6.2.1(1), why are there two columns labelled:

 

   1. Horizontal Loads

   2. Maximum Horizontal Wall Loads

 

and when do you use each?

 

Please be kind.

 

John Riley