chapter
Introduction
Pages 4

Wind loads, which cause large lateral drift, play a decisive role in the design of tall buildings and can be even more critical than earthquake loads. As a result, the wind loads and lateral drift to which tall buildings are subject have become an important problem. The wind-induced building response of tall buildings can be reduced by means of aerodynamic-based design and modifications that change the flow pattern around the building or break up the wind affecting the building face. Aerodynamic-based design can be divided into two types, "aerodynamic architectural design" and "aerodynamic architectural modifications" and their subgroups. Aerodynamic architectural design is realized by taking into consideration matters such as "building orientation", "aerodynamic form", "plan variation" and "aerodynamic top" as part of the basic design. Active systems, which aim to dampen wind-induced vibration, need an external energy source and are controlled by feedback from the structural responses.