Abstract
The high incidence of damage to the gable walls of closely spaced in-line buildings is often attributed to enhanced suctions developed by channelling and acceleration of the wind between the gables. It has long been recognised that channelling of the flow does occur, although quantitative data on the resulting gable wall pressures are lacking. This paper presents results from wind tunnel experiments to measure gable wall pressures on building models in close proximity to their neighbours. The results show that channelling of the flow can occur for certain wind directions and building separations, but that this does not substantially increase either the cladding or overall design loads on the gable walls. The most significant consequence of channelling is to increase by more than a factor of four the azimuth range over which high suctions can occur.
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