A high-rise steel structure has several stories and is stiffened by bracings in all stories.However, the first story is made of reinforced concrete. Therefore, the horizontal bracing should work via this concrete slab. How can I model this rigidly fixed concrete slab in RSTAB?
I have generated member loads from area loads via planes horizontal to the plane of a multistory frame. Each cell contains a truss as a diagonal. Although the diagonal has been excluded from the load, the member load distribution is linear in different directions after being disconnected on both posts.What is the reason, and what should be done to apply the same member load on both posts?