American Society of Civil Engineers

Transient Wind-Induced Internal Pressures

by Theodore Stathopoulos, M.ASCE, (Prof. and Assoc. Dir., Ctre. for Bldg. Studies, Concordia Univ., Montreal, Quebec, Canada H3G 1M8) and Horia D. Luchian, (Post-doctoral Fellow, Ctre. for Bldg. Studies, Concordia Univ., Montreal, Quebec, Canada)

Journal of Engineering Mechanics, Vol. 115, No. 7, July 1989, pp. 1501-1514, (doi:

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Document type: Journal Paper
Abstract: The paper refers to a new experimental approach applied in a boundary layer wind-tunnel experiment that tests the transient response of the wind-induced internal pressure in a building when a sudden opening occurs. This topic has been examined analytically in the past. It has been found that the internal pressure may become much higher than the external pressure when a large window breaks during a windstorm. The present study examines this question experimentally by imposing a sudden opening on the front wall of a square building. The internal pressure was monitored at a number of points inside the model building, which could be tested at various internal volumes by using airtight partitions. A continuous record of the internal pressure variation was thus obtained while a data acquisition system was sampling it at a high rate to determine its statistics. The results of the experiments are compared with the analytically predicted data and form a basis to examine the influence of the air flow and the internal volume on the transient responses of the wind-induced internal pressures in buildings.

ASCE Subject Headings:
Building design
Internal pressure
Wind tunnels