Wind tunnel investigations on a tall building with elliptic cross section

Abstract

According to a statistics revealed by Council of Tall Building and Urban Habitat [1] that for every 11.5 millions of global population, there is one tall building with 200 m+ in height available globally. Tall building constructions are paving ways for rapid urbanization worldwide including India, especially during the last one decade and will be continued over next few decades. Wind loads are one of the most important loads that govern the design of tall buildings. Published data on pressure and force coefficients for 3-D building with elliptic cross section under boundary layer flows are very scanty. This paper presents the results on mean force coefficients obtained through wind tunnel pressure measurements carried out on a 3-D tall building with elliptic cross section for various angles of wind incidence under suburban terrain. It is found that the mean pressure distributions and force coefficients depend significantly upon the angle of wind incidence.