Lateral Diaphragm values of 2x decking? 2

[seattlemike]

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

 

[boo1]

consider reviewing IBC 2306.3.4 and IBC Table 2306.3.3

WCD 2 - Tongue and Groove Roof Decking
<<

http://www.awc.org/pdf/wcd2.pdf>>

"Plank-and-Beam Framing For Residential Building" from the American Wood Council
<

http://www.awc.org/pdf/wcd4.pdf>

 

[seattlemike]

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

 

[JMorrison]

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.

 

[Taro]

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