Fire Safety Science Digital Archive

Safe escaping of occupants is the most important matter in the event of fire in the high-rise buildings. Hence, how to assure the safety and reliability of escape routes is a major subject in the field of structural fire prevention research. The paper gives a brief introduction and conclusions on a research subject with a title "Study on Smoke Exhaust Technology of Positive Pressure Supply Air Mechanisms in Staircases of the High-Rise Buildings", a key technical research project of the nation during its 8th fire-year plan, undertaken by the building fire prevention research division of Sichuan Fire Research Institute. A feature of this project is that all the tests were conducted in a full-scale building, i.e. an experimental fire tower for high-rise building, which is the highest and largest substantial building specially used for fire tests in the world today. There tests on initiation, development and read laws of substantial fires in guest rooms of a hotel were performed and at the same time, many kinds of test on automatic fire alarm, positive pressure supply air, operation of negative pressure smoke exhaust blowers and emergency evacuation of hotel guests were also conducted, during these systematical fire tests, a series of scientific conclusions and safety pressure valves were obtained by analyzing and investigating the tested data on the temperature, pressure, air velocity and the chemical compositions of the smoke and so on at the site.