Unstable isolated Footings in FE 1

[perfectaccess]

Hi Community,

I have Finite element model for isolated Footings , and I Define Sub grade modules,

but the problem is that the model is unstable in x-y plane due to the earthquake and wind load.

So What shall I do fix the model in the plane of x-y?

I am using Safe

And How can I check the sliding and overturning of the whole structure as well.

Hint: There is Ground beams connected columns necks

 

[perfectaccess]

Please Refer to American Code

 

[delagina]

if it's isolated footing, just use any excel or rigid program for foundation.

you don't just create squares and plates for spread footing and add subgrade support.
you need to know what you are doing. based on your question, you don't know what you are doing.