Analysis of self-supporting steel flared unlined chimney is presented in this paper. Chimneys have become an essential
part of industrial growth and to plays important role in reducing the environmental hazard caused by the large scale industries.
These are tall and slender structures. The chimney’s functioning is based on the natural draft or stack effect, we know that, the
density of the gases diminishes with rise in its temperature, because of this when the flue gases gets inside the chimney, the
buoyancy forces of air comes into action and help in lifting the flue gases out of the chimneys.