Outer shell of full contaimnet steel storage tank due to seismic

[Roohol]

Hi;
Does any one know if it is required to consider siesmic bending moment + buckling in case of leakage (full liquid in outer shell)?
or buckling shall be analysed based on seismic load related to empty outer shell?
thanks
roohol

 

[IFRs]

I would do both.

 

[Roohol]

Thanks IFRs
Please clarify why you consider both?
is allowable stress different for full+seismic and empty+seismic?

since we do not consider wind and seismic, can we assume that outer full liquid and seimic will not be happened simultaneously?