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RE: Composite Beam Design Question

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Nelson Stud literature states that the base metal thickness should be at
least 1/3 weld base diameter of the welded stud.  The also state that the
base metal thickness may be a thin as 1/5 the weld base diameter where
strength is not the foremost requirement.  Based on that it seems you could
consider the stud equivalent to a 3/4" stud for design strength.  (You could
also call TRW and talk to their tech people)

Roger C. Davis
Architect
 
 
205 N. Dewey St.
Eau Claire, WI 54703
P (715) 832-1605
F (715) 832-7850
 

-----Original Message-----
From: Brian S Bossley [mailto:BSBossley(--nospam--at)venturaengineering.com] 
Sent: Tuesday, June 28, 2005 6:16 AM
To: seaint(--nospam--at)seaint.org
Subject: Composite Beam Design Question


If I have a 7/8" diameter stud on a 1/4" walled tube (stud diameter >
2.5 x flange thickness) do I have to use the properties for a bare beam?
Do I use the equivalent smaller stud diameter for analysis that will
meet this criteria? 

Brian S. Bossley, PE
Ventura Engineering
7610 Olentangy River Rd.
Columbus, OH 43235
(614) 847-1110 x121

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