Shear force of each floor and eigenmodes

[paulidi]

Hello Seismosoft team!!

i)Can i see the total shear force of each floor during the response spectrum analysis?

ii)Also, according to KANEPE

''The inelastic static method is applied in buildings wherein
the effect of higher modes is not significant.
In order to verify this assumption, an initial elastic dynamic
analysis is required by taking into account those number of
eigenmodes that activate at least 90% of the total mass. Next, a
second elastic dynamic analysis shall be performed solely based on
the predominant eigenmode in each direction. The effect of higher
modes may be deemed significant when each storey shear resulting
from the initial analysis exceeds 130% of the corresponding one
resulting from the second analysis.''

Can i somehow conduct response spectrum analysis using the 2nd or the 3rd eigenmode alone so as to check KANEPE requirements?

[seismosoft]

1) No, this is not automatically possible. You need to add the shear forces of all the columns at that floor
2) You can perform a response spectrum analysis with only the first modes in each direction, by selecting the number of modes to be considered in the Analysis Parameters>Advanced Settings>Eigenvalue tab. You cannot perform the analysis with selected higher modes, though
Seismosoft Support