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RE: Visually Graded Lumber Design Values

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The Builders Booksource in Berkeley CA had both the 1991 and the 1997 NDS
the other day when I was in.  I think the 1991 is a xerox reprint version.
They also have a website at: <> 

Bill Cain, SE
Oakland CA

	-----Original Message-----
	From:	seaint-return(--nospam--at) [SMTP:seaint-return(--nospam--at)]
	Sent:	Friday, April 14, 2000 11:45 AM
	To:	seaint(--nospam--at)
	Subject:	RE: Visually Graded Lumber Design Values

		The 1997 UBC refers to 1991 NDS (National Design
Specification for Wood Construction of the American Forest and Paper
Association).  See Part 1 right before section 2316. 
		Good luck finding one. 
		There is a more current NDS printed in 1997 (there may be
even more current than that - 1999?).  It has all the design and section
values you need.  The NDS separates larger "timbers" into a "beams and
stringers" category and a "posts and timbers" category.  The difference
being the section's aspect ratio.
		P.S. - make sure you get the supplement. <>  
		 -----Original Message-----
		From: vicpeng [mailto:vicpeng(--nospam--at)]
		Sent: Friday, April 14, 2000 11:08 AM
		Subject: Visually Graded Lumber Design Values
		I'm studying the UBC 1997 for timber design, in particular,
heavy timber, post/beam constructions.  The following items don't appear to
be represented.
		E.g. Table 23-IV-V-1 UBC 1997 shows "Values for joists and
		1)    Do these values also hold true for 2x_ on flat?
		2)    Where do I find values for 3x_ to 12x_ visually graded
		3)    Similarly; round pile values?
		Does the UBC address the values that must be used for large
sections design?  I am reviewing from 2x4 to 12x12 D.Fir-L (North) in a
variety of sizes.
		Thank you.

		Thor A Tandy P.Eng, MCSCE
		Victoria BC
		e-mail: vicpeng(--nospam--at) <mailto:vicpeng(--nospam--at)>