All, thanks for the references. I will look into getting a copy of API-650 and AWWA D100, as suggested.
We actually have a copy of ACI350.3-06, which seems to present the same dynamic model that ASCE 7-10 is using (Housner 1963). If I'm analyzing a steel tank, are ACI350.3 equations for Tc, Wc...
I've been tasked with designing a foundation system for a 60' tall, 50,000 gallon ground-support tank used for liquid storage. My firm has had a older "rule of thumb" reference on tank seismic design from IBC 2000.
However, looking through ASCE 7-10's seismic requirements, it would seem section...
