Hi,

I have a model with a series of eccentric beams and loads and I am looking to calculate the natural frequency using the ASE module, however the masses seem to be applied at the SL instead of at the beam COG / actual location of the eccentric loads.

Could someone clarify how Sofistik transforms the loads into masses and particularly what is their point of application? I have very different results if I model the load at the COG of the section or if I it is defined as SW at the eccentric beams.

Note that we are modelling a cable stayed bridge so the accurate Z location of the mass is critical for the pylon eigenvectors.

Thank you.