The aim of this research is to evaluate the evacuation parameters from multi-storey buildings by using Hierarchical Petri Nets[1], for these the speci city of building construction will be taken into account. Extensions of the Petri Nets are applied successfully in various elds. Especially in the area of emergency and disaster management [2]. For modeling of the movement of human ows in the process of evacuation from multi-storey buildings the norms in construction will be applied. These norms are developed by The Normative Supervision Section of Buildings and Fire Department [3] in the Republic of Moldova. The parameters related to trac intensity in rooms, formation of cluster of people, di usion of human ows and reforming of the human ows will be evaluated.