In the present study, a reinforced concrete twin flue chimney of a super critical thermal plant corresponding to an installed capacity of 2 x 800 MW is considered. The modelling and analysis of the RC twin flue chimney is carried out using STAAD.Pro V8i. The superstructure of the twin flue chimney is modelled using plate elements and the substructure (foundation) is modelled using solid elements. Wind load and seismic load are considered for the study. Modal analysis is carried out to find the mode shape which is used for the computation of across wind load. Along wind load and across wind load are computed by using Random Response Method and Simplified Method as per IS 4998 (Part 1): 1992. Seismic analysis is carried out using response spectrum method. Static analysis and p-? analysis of the twin flue chimney model are carried out for load combinations. After analyzing the chimney for all the load combinations, results for serviceability conditions such as deflection, later