In soil-structure analysis problems, differential settlements are regarded as one of the major sources of building damage. For this reason, starting from 1950s, various researchers have come up with criteria, which determine allowable movements of structures. However a total agreement on these criteria could not be reached, especially due to numerous variables that have effect on this problem. In this study, first the terms that are being used to define differential settlements have been reviewed, and then a large database of case histories was examined using the damage criteria proposed by Burland  and the deep beam analogy. The analyses resulted in updated allowable angular distortion values for framed buildings and buildings with load-bearing walls, for different target damage levels.