What are the most important cusions to be considered during the design of the Stair Pressurization System to meet NFPA requirments?

While designing the stairwell presuurization system, the most important parameters are the airflow rate required at each floor & its static pressure. The static pressure shall take into consideration the force of the door opening. Also important is the location of the pressurized grille at each floor of the emergency staircase. Technical papers by 'Kolte' & 'Tamura' provide the best guidelines for satirwell pressurization design.