File

Save the data created on the SGS in various forms, output or import existing data.

Generate

Construct the earthquake acceleration, earthquake response spectrum and design response spectrum using the earthquake database built into the SGS.

Earthquake Record

Display the earthquake wave data on the graph.

Select the earthquake wave, input the amplitude and time scale and click the [OK] button.

The created data is the normalized acceleration. The data time spacing is 0.02 seconds for North American earthquake waves and 0.01 seconds for Japanese earthquake waves. Other earthquake wave data on a '*. dbs (SGS dbase)' file can be used by clicking the [Import] button.

Earthquake Response Spectra

Display the earthquake response spectrum as a graph, using the earthquake wave data in the database or from the user defined earthquake wave data.

1. Select the earthquake wave and input the amplitude and time scale. Import other earthquake wave data on a '*. dbs (SGS database)' file by clicking the [Import] button.

2. Input the damping ratio. To output multiple damping ratio graphs simultaneously, click the [Add] button.

3. Input the period range and spacing of graph output on the output period.

4. Select the spectrum type.

5. Check the [X-axis log scale] to set the x axis of the spectrum in log scale.

Design Response Spectra

Create a Design Response Spectra and display as a graph.

Input the data necessary for spectra creation on the dialog box, input the spectrum period range and click the [OK] button to display the graph.

Option

Set various options for the graph. The graph x axis and y axis can be displayed in log scale. The scale marks can be displayed. The thickness of the graph line can be modified and the graph title can also be modified.

View

Change the show/hide status of the tool bar or status bar. Also, the Zoom function for the graph and the Time Domain and Frequency Domain of the graph can be modified.

Zoom Out All

Return from the zoomed state to the original state.

To magnify a section of the graph, drag and select the desired section using the left mouse button. The right mouse button can be used to return the view state to the original state.

Time<->Frequency

Convert the graph x axis from the time domain to the frequency domain and vice versa.