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RE: 5/8" Thick WSP Panel Identification

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Could be, Roger, but the 40/20 has been around for a long time (using my
reference point, not yours) I believe in order to make 19.2" (8 ft/5 spaces)
work for joist spacing.

I think the metric issue is a coincidence.

When are we going to the metric dollar? Wait, we're already there!
	
T. William (Bill) Allen, S.E. (CA #2607)	
ALLEN DESIGNS	
Consulting Structural Engineers	
http://www.AllenDesigns.com	
V (949) 248-8588	 .	 F (949) 209-2509	

-----Original Message-----
From: Roger Turk [mailto:73527.1356(--nospam--at)compuserve.com] 
Sent: Wednesday, July 21, 2004 9:38 AM
To: seaint(--nospam--at)seaint.org
Subject: RE: 5/8" Thick WSP Panel Identification

Could it be possible that the span rating of 20/40 is a move to SI?  That a 
multiple 20 & 40 will match 1200mm?

A. Roger Turk, P.E.(Structural)
Tucson, Arizona

Tom Skaggs wrote:

Bill,

Paul is not technically correct, but he is practically correct.  On
paper, there is such a thing as a 5/8" WSP with a Span Rating of 32/16,
however, for all practical purposes this is NOT a common panel.  Please
see Table 5 of the Panel Design Specification, it provides nominal
thickness by Span Rating, and lists the most common panel thickness per
Span Rating.

http://www.apawood.org/pdfs/managed/D510.pdf 

If interested, I can explain why and how a company would Span Rate a
5/8" panel at 32/16, but the explanation is kind of long and tedious.

In short, a 5/8" 32/16 is not common and is typically not available.
Therefore, I would not anticipate your change in specification would
cause any heartburn.

Tom

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