Can you apply a torsional load on a specific point upon a rigid or flexible diaphragm?
Currently, if you apply a torsional load on a point, it must be included in the rigid diaphragm or connected to the rest of the structure through a member. We are in the process of allowing an assembly of points to be declared as a flexible diaphragm for book keeping purposes in which case the torsional load will be distributed based upon certain rules.