Configuration of the base shear condition verification
Some seismic codes require that the base shear resulting from the dynamic analysis exceed a certain percentage of the static shear value defined in the standard. When the dynamic shear value is lower than the minimum prescribed by the standard, the program adjusts the results by amplifying them by the corresponding modification factor.
The "Base shear condition verification" can be configured from the corresponding section of the "Regulations for seismic action calculation" window, accessible by activating the "With seismic action" checkbox in "General data".
Here, you can choose one of the following options to consider the increase in base shear forces:
- Do not carry out the static base shear correction
This option allows you to bypass the base shear check and, consequently, avoid adjusting the results. - Based on the Code
The factors calculated as specified in the selected seismic code are applied. This option only appears if the selected seismic standard considers the verification of the base shear condition. - Specify the static base shear percentage (%)
The "Percentage of static base shear" can be considered as the minimum limit in the base shear check. - Specify the modification factors
Applies modification factors to the dynamic calculation results specified by the user, according to their own considerations, seismic hypothesis and analysis direction ("Earthquake X1" "Earthquake Y1").
| Note: |
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| The options that allow user criteria to be entered appear in all seismic codes, even if they do not specifically consider the verification of the base shear condition. |
