Skip Sheathing Diaphragm Strength
Skip Sheathing Diaphragm Strength
(OP)
A closed post talked about calculating the diaphragm strength of the skip sheathing underneath a cedar shingle roof. One of the commenters mentioned that the AITC Timber Handbook had an example calculation of this. My version of the Handbook, the 5th, does not have any examples.
Does anyone know which version of the Handbook was the example I'm looking for?
Thanks.
Does anyone know which version of the Handbook was the example I'm looking for?
Thanks.






RE: Skip Sheathing Diaphragm Strength
I tried to model this ovewr 20 years ago, using a two nail force couple as the resisting factor at the intersection of each skip sheathing member to each rafter, but did not have much success. Good luck.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Skip Sheathing Diaphragm Strength
Look in ATC 7 _ Guidelines for the design of horizontal wood diaphragms, Appendix A.3 for the calc to find the diaphragm strength.
It will be low.