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Lateral Diaphragm values of 2x decking?
2

Lateral Diaphragm values of 2x decking?

Lateral Diaphragm values of 2x decking?

(OP)
Hello,

I was wondering if anyone had diaphragm values for carrying shear with 2x decking?  It would seem this should have been researched by someone at some point.

Thank you,

SeattleMike

RE: Lateral Diaphragm values of 2x decking?

(OP)
Hello boo1,

Thank you for taking the time to write the post.  I should clarify that I am talking about straight decking, not diagonal decking.  

I have read through the AWC documents before, but didn't see any lateral shear values?  Perhaps I am missing something?

SeattleMike

RE: Lateral Diaphragm values of 2x decking?

You'll find a lot of info on this question in the Timber Construction Manual.  Typically from what I've seen in decking applications, it isn't so much of a constant diaphragm capacity (like you'd look up for steel deck), but an analysis of weak-axis bending of the decking members as modified by the layup pattern.

There's a discussion of general procedures in Breyer's 'Design of Wood Structures' (5th ed) section 6.19, although it refers to the TCM for quantitative analysis.

RE: Lateral Diaphragm values of 2x decking?

Diaphragm values are given in the AF&PA wind & seismic supplement to the NDS.

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