Symbols
Cd = Deflection amplification factor
Ωo = Overstrength factor
R = Response modification coefficient


12.2 STRUCTURAL SYSTEM SELECTION

12.2.1 Each seismic force-resisting system should be designed by users in accordance with the specific requirements for the system listed in Table 12.2-1.

12.2.3.3 R, Cd , and Ω0 Values for Horizontal Combinations

The value of the response modification coefficient, R, used for design in the direction under consideration should be selected the least value of R for any of the systems used in that direction.