Pressure differences caused by wind on two tall buildings.

Describes measurements made of wind speed and direction and pressure differences across the exterior walls of two multi-storey buildings in Montreal. Regression coefficients are obtained and show better correlation for higher levels than forlower ones and for the taller building "A" than building "B", indicating that shielding by adjacent buildings has an important effect. The variation in wind velocity between the site and a meteorological station was recorded. Pressure difference due to chimney action alone and the combined effect of wind and chimney action were calculated and compared with measured values. This indicated that the combined effect would be adequately approximated by summing the individual effects.