The values for R, Ω0, and Cd at structural systems in Table 12.2-1 are chosen for structural steel and reinforced concrete systems by the user.
12.2.4 Combination Framing Detailing Requirements
Structural members are intrinsic to different framing systems used to counteract seismic forces in all directions and are designed using the detailing requirements of ASCE 7-16 Chapter 12.