Hi guys, I have to design a foundtaion for a circular steel silo and I need to calculate the
seismic load, do you know a procedure for this kind of structure?
There are sections in ASCE 7 dealing with different types of tanks and silos.
If it's one of the corrugated ones, you may need additional information from the manufacturer.
Generally silos aren't too challenging. I do them quite regularly. Most manufacturers I've seen for corrugated silos just linearly distribute the loads through the columns.