Describes the evaluation of the air-and-smoke-movement model developed at a Canadian research institute. To verify the model, predicted data are compared with data from full-scale fire tests involving a pressurised stair shaft smoke control system. The tests were conducted in the 10-storey experimental fire tower at the National Fire Laboratory of the National Research Council of Canada. Predicted data exhibit good agreement with measured data. Discusses the effects of large exterior and interior openings and the pressure due to the fire on the building's pressures and on smoke migration.

KEYWORDS: smoke, air flow, calculating, smoke ventilation, air movement, Canada, comparing, testing, pressurised stairs, multistorey buildings, experiment