M. To define pushover spectral data
Use the following procedure to define the seismic hazard per FEMA 356.
- On the Loading ribbon tab, select the Pushover tool in the Define Loading Systems group. The Create New Definitions / Load Cases / Load Items dialog opens with only the Pushover tab displayed.
- Select the Define Spectral Details tab.
- Specify up to four Critical Damping values for the 1st through 4th spectra. At least one is required, which has a default value of 5.0%.
- (Optional) Select the Site Category Site Class D is used by default.
- Specify the Mapped Spectral Acceleration At Short Period, Ss, to be used per Table 1-4 of FEMA 356.
- Specify the Mapped Spectral Acceleration At One-Second Period, S1, to be used per Table 1-5 of FEMA 356.
- Click Add.