The parameters of a structure seismic analysis depend on a seismic code used during the calculations of a structure influenced by seismic loads.
Select Canadian seismic code NBC 2010 in the New Case Definition dialog or click Parameters in the Analysis Type dialog.
To complete the seismic analysis according to the rules given in the NBC 2010 code, define the following parameters:
- Site as classified in the Table 4.1.8.4.A
- Factors (Sa(0.2), Sa(0.5), Sa(1.0), Sa(2.0), Fa, and Fv) depend on the selected province, and conform with Table C-2.
The displayed factor values depend on the selected province and site. You can change these values manually or you can click Region to change the province and site of reference.
- Set IE - the earthquake importance factor of the structure, according to Table 4.1.8.9.
- Specify parameters Rd - ductility-related force modification factor and Ro - overstrength-related force modification factor, according to Table 4.1.8.9.
In this dialog, you can also access and modify the Direction definition, Filters, and Base Shear by clicking the dedicated buttons.
You can find the details concerning this structure analysis method in the mentioned code.