I get all your points.
But the confusion which surrounds me is if my structure is determinate for example a simply supported beam or frame. I would go ahead and use the equilibrium equations to get my member forces and support reactions. Now these answers would be independent of the material...
I have a question related to the stiffness method of structural analysis.
As we use EI for the purpose of analysis in the stiffness method, will change of material change the results of member end forces and support reactions ?
My current understanding was that it wont effect the member forces...
