Natural wind effects on the infiltration of low-rise buildings.

Reports experimental measurements carried out in a boundary layer wind tunnel at the University of Western Ontario. Both external and internal pressures on two different models were measured with different porosities for the walls. Discusses results and concludes that mean internal pressures measured in thewind tunnel agree well with analytically predicted values that accurate evaluation of internal pressures is necessary to calculate building air infiltration. Also finds that for low-rise industrial buildings, air exfiltration from the roof appears to be very large and infiltration may occur through all four walls.