Diaphragm Construction Continued



Floor diaphragms and roof diaphragms may be constructed with plywood or OSB sheathing panels oriented in one of six ways, as described and illustrated below:



Since the various diaphragm construction cases described above are dependent on orientation of continuous panel joints with respect to the direction of applied lateral load, it is apparent that a Case 1 diaphragm for applied lateral load on one edge will be a Case 3 diaphragm for applied lateral load on the orthogonal edge of the diaphragm. Similarly, a Case 2 diaphragm in one direction is a Case 4 diaphragm in the orthogonal direction, and a Case 5 diaphragm in one direction is a Case 6 diaphragm in the orthogonal direction.


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