Static Wind Load, Tall Builliding

Wind load on the buildings are typical dynamic in nature. The approach wind speed largely depends on surface roughness and topography condition for the approach flow of wind. Wind plays an important role in the design of the tall structure because it exerts a load on the structures. For any high rise vertical construction, wind is more significant load factor than the earthquake and gravity load. Calculated results can be used in the selection of the design parameter of the building. As we know that if the load increases this will affect most of parameters of design such as dimensions of structural members, strength of material, and quantity of material and cost of the construction. Terrain category define as the surface condition of approach flow (smooth or rough). Different wind loading codes considered different terrain condition from terrain category 1 to terrain category 5 where terrain category 1 to 5 indicate smoother to rougher condition. Table: 1 show the terrain category considered by different wind loading codes and standards.

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