Ex min or Ey min

This will probably be my shortest post. …

In the determination of wood beam stability (lateral torsional buckling) with respect to bending about the X-X axis, use Ey min (not Ex min).

The context here is structural glued laminated timber (glulam). And it’s a bit confusing, since Ex min is under the heading `loads perpendicular to the wide faces of the laminations’. But, I don’t know of a situation where Ex min would be used when the beam is loaded perpendicular to the wide faces of the lams (X-X bending).<sup>1</sup> The beam `buckles’ the other direction … mandating the use of Ey min.