A study on the distribution of the peak wind pressure coefficient for the wind resistant design of rooftop hoardings in high-rise buildings

Among outdoor advertisements, rooftop hoardings are larger and more affected by the wind. They suffer much damage due to strong winds every year. However, there is no accurate wind load for the design of wind-resistant rooftop hoardings. Wind pressure experiments were conducted to determine the peak wind pressure coefficient for the wind-resistant design of a two-sided rooftop hoardings installed on 10–20-storey buildings. The minimum peak wind pressure coefficient of the rooftop hoardings was-3 for the corners of the front and rear bottoms and-2 for the entire sides. As the height of the rooftop hoardings increased due to an increase in building height, the absolution peak value at the minimum peak wind pressure coefficient was larger. The distributions of the maximum/minimum peak wind pressure coefficients of outdoor rooftop signboards were affected by the signboard location and wind angle.