The construction of tall buildings often results in areas around the structure experiencing unexpectedly strong winds or, conversely, almost stagnant air. In the former case, the comfort and safety of pedestrians or building occupants can be compromised. In the latter, insufficient ventilation and air circulation may occur. For pedestrian spaces around buildings, such as outdoor dining areas, benches, street malls, and plazas, it is important to ensure a wind environment that is appropriate for the intended use. At the same time, pedestrian safety against strong winds must be secured. Generally, the pedestrian wind environment is assessed using a probabilistic approach based on the frequency of wind direction and speed derived from meteorological data at the construction site, combined with wind speed ratios evaluated through wind environment testing.

▣ Frequency of wind speed and its direction
▣ Wind speed ratio
▣ Assessment of pedestrian level wind
▣ Visualization of wind flow

Lotte World Tower, Seoul, Korea