• Rekha B
• Vidya Patil

The height of chimney influences the flow of flue gaeses to external environment. The higher the height, it is better for the environmental protection, but the reduced structual stability and increased construction cost with increasing the height. The objective of this research paper is to perform a comparative design of a reinforced concrete chimney of 315m high, located at Hyderabad using BIS design codes of tall structures IS 875(Part 3):2015 and IS 875(Part3):1987. The detailed analysis revealed the effectiveness of IS 875(Part 3):2015 to have accurate wind pressure load consideration and it is observed 20% higher wind load with IS 875(Part 3):2015 at a location than that of older version.The second objective is to identify optimum height to diameter (H/D) ratio of chimney for different wind and seismic zones using Autodesk software and a parameteric study. The optimum H/D ratio for 315m chimney as measured as 13 for seismic zone 2, 3 and wind zone 1, 2, 3, in which zones Hyderabad is expected. Also the parameter study confirmed to continue the recommend usage of H/D ratio for the design of economical and safe Chimney.

Industrial Chimney, IS 875(PART 3):1987, IS 875(PART 3):2015, Autodesk Software, Dynamic Behaviour Analysis

"DYNAMIC BEHAVIOUR OF TALL REINFORCED CONCRETE CHIMNEYS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.129-134, February-2019, Available :http://www.jetir.org/papers/JETIR1902015.pdf

"DYNAMIC BEHAVIOUR OF TALL REINFORCED CONCRETE CHIMNEYS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp129-134, February-2019, Available at : http://www.jetir.org/papers/JETIR1902015.pdf