In commemoration of the ASHRAE Centennial, gives a brief overview of research relating to smoke control. Describes many significant smoke control research and related efforts from 1972 to the present. These projects are discussed with the intent of providing information about smoke control systems and the underlying principles behind them. A secondary goal is to develop an appreciation of the effort required to advance the technology of these systems. The two main categories of smoke management systems used in buildings are pressurisation systems and exhaust systems for atria (and other large spaces). In general, addresses the pressurisation systems and related efforts.

KEYWORDS: year 1995, smoke ventilation, pressurisation, history, research, pressurised stairs, pressure drop, pressure difference, comparing, smoke, air flow