Seismic Behaviour of Elevated Water Tank under Different Staging Pattern

As known from very upsetting experiences, elevated water tanks were heavily damages or collapsed during earthquake. This was might be due to the lack of knowledge regarding the proper behavior of supporting system of the tank again dynamic effect and also due to improper geometrical selection of staging patterns. This paper presents seismic analysis of elevated water tanks supported on different staging pattern with different tank storage capacities. Here two different supporting systems such as radial bracing and cross bracing are compared with basic supporting system for various fluid level conditions. Tank responses including base shear, overturning moment and roof displacement have been observed, and then the results have been compared and contrasted.