Equivalent Round Section Dimension

New
AISC 341-16 Moment Frame Member Design in RFEM 6
The three types of moment frames (Ordinary, Intermediate, Special) are available in the Steel Design add-on of RFEM 6. The seismic design result according to AISC 341-16 is categorized into two sections: member requirements and connection requirements.
- Which Limit State Types are applicable for the AISC 341 seismic design?
- How can I connect surfaces to other surfaces or members in a hinged/semi-rigid way? What are Line Hinges and Line Releases?
- I have a 3D model and try to split it up into "walls" and "surfaces" with the Building Model and to calculate them separately. However, my structural system becomes unstable then. What can be the reason?