Structural system selection, Response modification coefficient R, Deflection amplification factor Cd and Overstrength factor Ωo are controlled by user.
Design coefficients and factors selected by user in the analysis settings wizard and report results are checked automatically.
Cd = Deflection amplification factor
Ωo = Overstrength factor
R = Response modification coefficient
Increased structural height limit is controlled automatically according to ASCE 7-16 22.214.171.124 by the program.
Increased Structural Height Limit for Steel Eccentrically Braced Frames, Steel Special Concentrically Braced Frames, Steel Buckling-Restrained Braced Frames, Steel Special Plate Shear Walls, and Special Reinforced Concrete Shear Walls
It’s permitted to be increased from 160 ft (50 m) to 240 ft (75 m) for structures assigned to Seismic Design Categories D or E and from 100 ft (30 m) to 160 ft (50 m) for structures assigned to Seismic Design Category F, on condition that the seismic force-resisting systems are limited to steel eccentrically braced frames, steel special concentrically braced frames, steel buckling restrained braced frames, steel special plate shear walls, or special reinforced concrete cast-in-place shear walls.