all the codes that I could find, are usually talking about static loads, none of them is giving specifications about seismic loading. could you please suggest me how and where can I find the related content.
this Eurocode just gives the general guidelines about silos, not the specific ones. what actually is m searching for, is how to first calculate the time period of a particular silo and how to proceed thereafter. for example, if you see in IS1893: PART4 (2005), It asks to calculate the time period according to rayleigh's approximate formulation but that formulation given in IS is basically for the lumped mass system which is not the case for silos.
Please see the attached image of the excerpt from IS CODE.