Impact of Revised Code Provisions of Wind and Seismic Loads on RCC Elevated Water Tanks

Reinforced concrete elevated water tanks are virtal structures that would be expected to be functional even after the structure subjected to severe earthquake and cyclones in order to serve the water system network. This project aims to study, the effect of seismic and wind loading on elevated water tank, on the various design wind speeds and earthquake forces with the earlier and revised Indian codes of IS 875 (Part3) and IS 1893 (Part1) by using STAAD PRO (V8i) software. In this project the effect of wind forces on the elevated water tanks are carried out to determine the internal forces with different replacement of cyclonic factor percentages i.e., (15%, and 30%) and the effect of seismic forces are also carried out to determine the forces with both the impulsive and convective methods. The wind forces obtained are also lesser in both the post cyclonic importance of structure and in the industrial structures, when compared with the obtained base shear in both impulsive and convective methods. The obtained models are considered under all types of Zones and compared all the results with the Zone II. The obtained results are higher in Zone V. The analyzed models of the elevated water tanks are carried out in STAAD. Pro (V8i) software to find the variation of internal forces such as bending moments, shear forces, axial forces, support reactions and to estimate the reinforcement in accordance with the IS 1893 (Part2):2014 code provisions. The results suggested that when the models are compared by Zone III, IV and V with Zone II, the bending moments and shear forces in the floor level beams are high and the axial forces in columns are high at bottom of the structure. The reinforcement estimate shows high in Zone V for all the capacities of elevated water tanks in the Zone V, The results are tabulated in comparison with the IS 1893(Part2):2014 code, with respect to the Zone II for the elevated water tanks.