Stiffness matrix

[sanya greek]

Hello!

By EN-8 for stiffness matrix we mast to use one-half of the corresponding stiffness of the uncracked elements.

In the Help System i found:
Sections ->
"The EA, EI & GJ values shown in this module are merely indicative (i.e not used in the analysis) and calculated using the elastic material properties of the main section material (i.e. concrete in R/C sections and steel in steel sections)."

What EA, EI & GJ values the program use?

Thank you!

[seismosoft]

By default the uncracked stiffness. But this can be changed in the Project Settings>Cracked/Uncracked Stiffness.
Seismosoft Support