SAP2000 SAP2000 Web Tutorial 1

11. From the Select menu select Select and then Groups… from the submenu. This will display
the Select Groups dialog box.
12. Click on the group name ROOF once to highlight it, then, holding down the Ctrl key, click
on the group named 2ND to add it to the selection. Click the OK button.
13. On the Design menu choose Redefine Element Design Data. The Element Overwrite
Assignments dialog box is displayed.
14. In this dialog box:
In the Assignment Options area check the box labeled Unbraced Length Ratio (Minor,
LTB) and then type .0833 in the Unbraced Length Ratio (Minor, LTB) edit box.
Click the OK button to close the Preferences dialog box.
15. On the Design menu choose Start Design/Check of Structure. The second design check of
the structure proceeds.
16. When the design is complete, the member stress ratios are displayed on the structure as
shown in Figure C-20.
Figure C-20: Final Member Stress Ratios
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