Limit analysis (or yield design theory) enables to determine the ultimate load that a structure can sustain under the conditions of static equilibrium and fulfillment of a yield (or strength) criterion. It relies on the use of two bounding theorems (resp. static and kinematic approach) which enable to bracket the ultimate load by a lower (resp. upper) bound. In the case of plates in bending, both equilibrium and yield conditions can be formulated in terms of generalized stresses, e.g., bending moments for the case of thin plates.