ABSTRACTPresent work investigates the performance of self-supported steel chimney considering different shape factors for wind forces at different heights. In this study work consists two parts, one is the calculation of static wind forces using IS- 875- Part-III-2015 and implementation of chimney using FEA based software ANSYS, considering calculated wind forces. Flared Chimney of 60m height and unflared chimney of 30m height considering different shape factors (Circular, Square, Equilateral Triangle and Regular hexagon) have analyzed using ANSYS. Keywords: ANSYS, Steel Chimney, IS 875 Part-III 2015, FEA, Wind Forces