Hello @Karamba

I have gone over the manual and several example files, yet I am not sure how to model seismic load correctly in Karamba.

I understand from the example files that seismic load is modeled using “Gravity”. If that is right, why is the vector in the Z direction, when seismic is a lateral load?

How can I define the magnitude of the vector correctly?

your help is appreciated

Hi, at the moment you can only apply a horizontal vector direction in gravity to perform a seismic analysis. You can simply use a X or a Y vector to simulate a lateral load.

Thank you for the clarification. How can I define the magnitude of the X or Y vector? Any guide or references on that?

You can use the Unit vector component and set the multiplier to be your magnitude. The exact value depends on your location.