In incineration plants, RC stacks took the place of steel-supported stacks in '70s with the view of improving design appearance. In the past study, we have reported a square-shaped stack is stressed the largest resonance wind pressure in the various shapes (circle, square, triangle) against design wind velocity from 30 to 46m/s. In this study, we carried out a series of wind tunnel tests of square-shaped stack model with various shapes of corner, and confirmed the effect of wind-induced response.
