Seismic design rules (Columns: AISC 360)
Additional design rules are required for seismic combinations. These are as per the AISC Seismic Provisions (AISC 341) (Ref. 5). These additional design rules ONLY apply to members in Seismic Load Resisting Systems.
The rules applied depend upon the seismic load resisting system as defined in the AISC Seismic Provisions and are listed below:
Moment frame systems
Special Moment Frame (SMF)
- Classification
- Column strength check
- Column/beam moment ratio
Intermediate Moment Frame (IMF)
- Classification
- Column strength
Ordinary Moment Frame (OMF)
- Classification
- Column strength check
Special Truss Moment Frame (STMF) - Beyond Scope
Special Cantilever Column Systems (SCCS) - Beyond Scope
Ordinary Cantilever Column Systems (OCCS) - Beyond Scope
Braced frame systems
Special Concentrically Braced Frames (SCBF)
- Classification
- Column strength check
Ordinary Concentrically Braced Frames (OCBF)
- Classification
- Column strength check
Eccentrically Braced Frames (EBF) - Beyond Scope
Buckling Restrained Braced Frames (BRBF) - Beyond Scope
Frames containing composite beams
All frame types are Beyond Scope