Field Measurement for Aerodynamic Mitigation of Wind Pressure on Gable-roofed Low-rise Building

The components and claddings of low-rise building are usually destroyed first during typhoon disasters in coastal areas. Roof accessory structures can change the flow pattern on the roof, thus effectively reducing the wind load on the roof surface and the damage to the low rise buildings. Two types of aerodynamic mitigation plates, i.e., (1) 0.3 m high full length roof-edge plate, and (2) 0.3 m high and 0.5 m + 0.5 m long roof-corner plate, are studied on the basis of the field measurement results under roof pitches of 10° and 18.4°. By comparing the results of the roof with and without constructed plates, it implies that the two types of plates can affect the formation of conical vortexes and can significantly reduce the mean and fluctuating pressure coefficients in the windward corner. Compared with the constructed plate, the roof ridge has a larger influence on the wind loads on leeward roof.