button will provide access to the CSI Calculator form. Use that form to apply a formula to calculate the value.Form: Base Shear vs Monitored Displacement
The static pushover curve is a single force-displacement curve obtained from a static nonlinear analysis. Use ETABS to view the pushover curve in the Acceleration-Displacement Response Spectrum (ADRS) format and overlay it with various response spectra, thus allowing you to perform capacity-spectrum analysis in ETABS.
As a reminder, to display a pushover curve:
Define a nonlinear static case and run a nonlinear static analysis. (As a tip, for the nonlinear static case, set the Load Application to Displacement Control and the Results Saved to Multiple States.)
Click the Display menu > Static Pushover Curve command, which will display the Base Shear vs Monitored Displacement form. The form will display with a tab at the top, a tool bar, graphical plot and plot parameter options.
Tab - The name of the tab changes depending on the type of plot being displayed.
Graphical Plot area. The plot is shown in this area with appropriate labeling for the X and Y axes. When the mouse pointer is moved over the plot, the coordinates of the pointer location are shown below the plot.
Plot Parameters - Use the plot parameter options to set the plot display, including selecting the plot type: Shear vs Displacement, FEMA 440 EL (Equivalent Linearization), FEMA 440 DM (Displacement Modification). As an option is selected, another window will display showing the newly selected option.
The parameters available will change depending on which plot type is selected. Click on a parameter and an explanation of that parameter will display in the lower left-hand corner of the form. If the text of the parameter name is partially hidden, use the cursor to drag the parameter area to make it larger, similar to resizing in Windows or Mircosoft Excel. Similarly, if the text display area in the lower left-hand corner is too small, drag it up to make it larger.
Changes to the parameters can be made by clicking the value area. A drop-down list of possible parameters will display, or use the available edit boxes. In some cases, a button will provide access to the CSI Calculator form. Use that form to apply a formula to calculate the value.
As necessary, set the Line Type, Line Width, and Line Color options to facilitate interpretation of the display of a given parameter on the plot. In some cases, the Visibility of a parameter on the plot can be turned off (set to No).
The changes made to the parameters immediately update the graphical plot.