A WIND TUNNEL INVESTIGATION OF A RETRACTABLE FABRIC ROOF FOR THE MONTREAL OLYMPIC STADIUM

The Stadium playing field is to be covered by a retractable fabric roof that is attached to the fixed part of the roof covering the stands. The fabric is tensioned by cables rising up to a tower above the Stadium. The purpose of the investigation has been to determine the effect of wind on the forces imparted to the fixed roof structure by the deployed fabric roof. A 1:100 scale model has been studied in the National Research Council 9m × 9m (30ft × 30ft) Low Speed Wind Tunnel. The fabric roof and supporting cables have been modelled elastically.