G.17.4.2.1.1 Define Steel Moment and Braced Frames

Steel moment frames are those frames that develop their seismic resistance through bending of steel beams and columns and moment resisting beam-column connections. Steel braced frames are those frames that develop their seismic resistance primarily through axial forces in the components.

User must specify whether the structure is a moment frame or braced frame. By default the program considers it as moment frame.