http://www.iaeme.com/IJCIET/index.asp 172 editor@iaeme.com International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 6, June 2018, pp. 172–181, Article ID: IJCIET_09_06_020 Available online at http://www.iaeme.com/ijciet/issues.asp?JType=IJCIET&VType=9&IType=6 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication Scopus Indexed ALONG WIND RESPONSE OF FREE STANDING TRI-POLE LATTICE TOWERS B. Santhosh Kumar Ph. D Scholar, Department of Civil Engineering, GITAM deemed to be University, Visakhapatnam & Deputy Executive Engineer, Water Resources Department, Government of Andhra Pradesh B. Ramesh Assistant Professor, Department of Civil Engineering, GITAM deemed to be University, Visakhapatnam, India Balaji K.V.G.D Professor, Department of Civil Engineering, GITAM deemed to be University, Visakhapatnam, India Chandan Kumar. Patnaikuni Assistant Professor, Department of Civil Engineering, GITAM deemed to be University, Visakhapatnam, India Sankili Reynold M. Tech, Scholar, Department of Civil Engineering, GITAM deemed to be University, Visakhapatnam, India ABSTRACT The failure reports of telecommunication towers during the last 40 years of cyclone periods in India are alarmingly increasing, even though during the design stages these factors have been considered according to IS: 875 Part (3) 1987 design guidelines. This situation emphasis the IS: 875 Part (3) 2015 to recommend the cyclonic importance factor in the dynamic analysis of tall and flexible structures even after peak factor for upwind velocity fluctuations and peak factor for resonance have been introduced in this revised version .This paper explains the influence of the cyclonic importance factor on 40 and 60 m height tri-pole telecommunication towers using STAAD Pro (V8i). Key words: IS: 875 Part (3):2015, Cyclonic Importance factor, STAAD Pro (V8i), Tri-pole tower, Dynamic analysis. Cite this Article: B. Santhosh Kumar, B. Ramesh, Balaji K.V.G.D, Chandan Kumar. Patnaikuni and Sankili Reynold, Along Wind Response of Free Standing Tri-Pole Lattice Towers, International Journal of Civil Engineering and Technology, 9(6), 2018, pp. 172–181. http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&VType=9&IType=6